CSES - Putka Open 2015 – 6/6

Submission details
Task:	Shakki
Sender:
Submission time:	2015-12-04 21:52:02 +0200
Language:	C++
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	28
#2	ACCEPTED	21
#3	ACCEPTED	24
#4	ACCEPTED	27

Test results
test	verdict	time	group
#1	ACCEPTED	0.06 s	1	details
#2	ACCEPTED	0.07 s	1	details
#3	ACCEPTED	0.06 s	1	details
#4	ACCEPTED	0.05 s	1	details
#5	ACCEPTED	0.06 s	1	details
#6	ACCEPTED	0.05 s	1	details
#7	ACCEPTED	0.05 s	1	details
#8	ACCEPTED	0.06 s	1	details
#9	ACCEPTED	0.06 s	1	details
#10	ACCEPTED	0.06 s	1	details
#11	ACCEPTED	0.06 s	2	details
#12	ACCEPTED	0.06 s	2	details
#13	ACCEPTED	0.06 s	2	details
#14	ACCEPTED	0.06 s	2	details
#15	ACCEPTED	0.06 s	2	details
#16	ACCEPTED	0.06 s	2	details
#17	ACCEPTED	0.05 s	2	details
#18	ACCEPTED	0.05 s	2	details
#19	ACCEPTED	0.05 s	2	details
#20	ACCEPTED	0.06 s	2	details
#21	ACCEPTED	0.06 s	3	details
#22	ACCEPTED	0.05 s	3	details
#23	ACCEPTED	0.06 s	3	details
#24	ACCEPTED	0.05 s	3	details
#25	ACCEPTED	0.05 s	3	details
#26	ACCEPTED	0.06 s	3	details
#27	ACCEPTED	0.05 s	3	details
#28	ACCEPTED	0.05 s	3	details
#29	ACCEPTED	0.06 s	3	details
#30	ACCEPTED	0.06 s	3	details
#31	ACCEPTED	0.06 s	4	details
#32	ACCEPTED	0.05 s	4	details
#33	ACCEPTED	0.05 s	4	details
#34	ACCEPTED	0.06 s	4	details
#35	ACCEPTED	0.05 s	4	details
#36	ACCEPTED	0.06 s	4	details
#37	ACCEPTED	0.05 s	4	details
#38	ACCEPTED	0.05 s	4	details
#39	ACCEPTED	0.05 s	4	details
#40	ACCEPTED	0.05 s	4	details

Compiler report

input/code.cpp: In function 'unsigned int rot_4x4(unsigned int, int, int)':
input/code.cpp:28:23: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   auto n=b&~(0x33<<y*4+x);
                       ^
input/code.cpp:29:15: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   n|=(b&1<<y*4+x)<<1;
               ^
input/code.cpp:30:17: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   n|=(b&1<<y*4+x+1)<<4;
                 ^
input/code.cpp:31:19: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   n|=(b&1<<(y+1)*4+x)>>4;
                   ^
input/code.cpp:32:21: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   n|=(b&1<<(y+1)*4+x+1)>>1;
                     ^
input/code.cpp: In function 'std::vector<int> solve(std::vector<std::basic_string<char> >)':
input/code.cpp:87:44: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
       if(M[Y*4+y][X*4+x]=='M')block|=1<<y*4+x;...

Code

#include <algorithm>
#include <iostream>
#include <string>
#include <unordered_set>
#include <vector>

int rand7() {
  static const std::string s(
    "5015540611051231243566552452031661504340134160300563316012010431135015620614453361203302525024326505"
    "2623155036566160535224424125015461313304246265065165356245006244540661040226431314252500050260115262"
    "4101620532516146036314323665123532110665243521362516664055414325303423440040065613232106041205542621"
    "2636143001406404503020215012242066553031202151033421142521414660612316446533514521034404121304153401"
    "6351020103256141424211630505121645256225225334503516140352536455503634401463433124643246636015143366"
    "3460443046460530554223025513331622613212443433013302213132350125614353531412350155656315030342253455"
    "1631360205010562052142300015654503352321224516404112466056004426150556244502112046320632025236452366"
    "0153203001513410221662432464136124446130253550433402112343252355611446234001262215032156136020103305"
    "0234023052151142565523432541442663223212335156603212501614204122102513050545633654560303441361566116"
    "5412134645331550404341564343313344511340151413022330010251356334136250142223131036040352024212104325");
  static int i=0;
  return s[i++%s.size()] - '0';
}

const unsigned P16=1<<16;
unsigned depth_4x4[P16];
unsigned yx_4x4[P16];

unsigned rot_4x4(unsigned b,int x,int y){
  auto n=b&~(0x33<<y*4+x);
  n|=(b&1<<y*4+x)<<1;
  n|=(b&1<<y*4+x+1)<<4;
  n|=(b&1<<(y+1)*4+x)>>4;
  n|=(b&1<<(y+1)*4+x+1)>>1;
  return n;
}

std::vector<int> get_counts(const std::vector<std::string>&M){
  std::vector<int>counts(4);
  for(int y=0;y<8;++y)for(int x=0;x<8;++x)counts[y/4*2+x/4]+=M[y][x]=='M';
  return counts;
}

int balance(const std::vector<int>&counts){
  int b=0;
  for(int c:counts)b+=abs(c-8);
  return b;
}

void rot(std::vector<std::string>&M,int x,int y){
  std::swap(M[y][x],M[y][x+1]);
  std::swap(M[y+1][x],M[y][x]);
  std::swap(M[y+1][x+1],M[y+1][x]);
}

std::vector<int> solve(std::vector<std::string>M){
  std::vector<int>solution;

  for(;;){
    auto cs=get_counts(M);
    if(cs[0]==8&&cs[1]==8&&cs[2]==8)break;
    for(int y=0;y<7;++y){
      for(int x=0;x<7;++x){
        rot(M,x,y);
        auto cs2=get_counts(M);
        if(balance(cs2)<balance(cs)){
          solution.push_back(y*8+x);
          goto next;
        }
        else{
          rot(M,x,y);
          rot(M,x,y);
          rot(M,x,y);
        }
      }
    }
    {
      int x=rand7();
      int y=rand7();
      rot(M,x,y);
      solution.push_back(y*8+x);
    }
    next:;
  }

  for(int Y=0;Y<2;++Y)for(int X=0;X<2;++X){
    auto block=0u;
    for(int y=0;y<4;++y)for(int x=0;x<4;++x)
      if(M[Y*4+y][X*4+x]=='M')block|=1<<y*4+x;
    while(depth_4x4[block]){
      auto yx=yx_4x4[block];
      auto y=yx/4+Y*4;
      auto x=yx%4+X*4;
      solution.push_back(y*8+x);
      block=rot_4x4(block,yx%4,yx/4);
    }
  }

  return solution;
}

int main(){
  for(int i=0;i<P16;++i)depth_4x4[i]=999999;
  unsigned solved=0x5A5A;
  depth_4x4[solved]=0;
  for(unsigned depth=1;;++depth){
    std::unordered_set<unsigned>prev;
    for(int i=0;i<P16;++i)if(depth_4x4[i]==depth-1)prev.insert(i);
    if(prev.empty())break;
    for(auto p:prev)for(int y=0;y<3;++y)for(int x=0;x<3;++x){
      auto n=rot_4x4(p,x,y);
      n=rot_4x4(n,x,y);
      n=rot_4x4(n,x,y);
      if(depth_4x4[n]>depth){
        depth_4x4[n]=depth;
        yx_4x4[n]=y*4+x;
      }
    }
  }

  std::vector<std::string>M(8);
  for(auto&s:M)std::cin>>s;
  auto solution=solve(M);
  for(auto&s:M)for(auto&c:s)c="MV"[c=='M'];
  auto solution2=solve(M);
  if(solution2.size()<solution.size())solution=std::move(solution2);

  std::cout<<solution.size()<<'\n';
  for(int yx:solution)std::cout<<yx%8+1<<' '<<yx/8+1<<'\n';
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
`VMMVVMVV MMVVMVVV MMVVMMMM MVVVMVVM MVVVVMVM ...` view save

correct output
`100000` view save

user output
`26 1 4 2 3 3 1 3 3 ...` view save

Test 2

Group: 1

Verdict: ACCEPTED

input
`MVMVVMMV VVMMVVVV VMMVMMVM MVVVVMVM MVMVMMVM ...` view save

correct output
`100000` view save

user output
`23 1 4 6 4 3 2 2 2 ...` view save

Test 3

Group: 1

Verdict: ACCEPTED

input
`VMMMVMVV MMMVMVMV VMMVMVVM VVVMVMMV MVMVMVMV ...` view save

correct output
`100000` view save

user output
`25 4 4 1 3 1 3 2 3 ...` view save

Test 4

Group: 1

Verdict: ACCEPTED

input
`VVVMVMVV VMMVMVMM MVVMMVMV VMVMMVMM MMVVMMVM ...` view save

correct output
`100000` view save

user output
`37 4 2 4 6 6 1 2 6 ...` view save

Test 5

Group: 1

Verdict: ACCEPTED

input
`MVMVVMMM VVMMVVMV MVVMVVMM VMVMVMMV MMVMVVVM ...` view save

correct output
`100000` view save

user output
`99 6 1 2 6 6 5 1 7 ...` view save

Test 6

Group: 1

Verdict: ACCEPTED

input
`VMMVMVVM VVMMVVMM MMMVMVVM VMMVMMVM MVMVMMMV ...` view save

correct output
`100000` view save

user output
`23 2 4 4 4 1 2 1 1 ...` view save

Test 7

Group: 1

Verdict: ACCEPTED

input
`MVVVVMMM MMMMMMMM VVVVVMMV MMVVMVVM VMVVVVMV ...` view save

correct output
`100000` view save

user output
`62 4 1 6 1 2 6 6 5 ...` view save

Test 8

Group: 1

Verdict: ACCEPTED

input
`VMMVMVMM MMMVVMMM MVVVVVVV VVVVMMMV MVVVMVVM ...` view save

correct output
`100000` view save

user output
`46 4 3 1 4 6 1 2 6 ...` view save

Test 9

Group: 1

Verdict: ACCEPTED

input
`VVVVVMMM MMVVVVVV MVVVMMMM VVMVVVVM VMMVMVMM ...` view save

correct output
`100000` view save

user output
`52 3 4 6 1 2 6 6 5 ...` view save

Test 10

Group: 1

Verdict: ACCEPTED

input
`VMMVMMMM VVMVVVVV VMMVMVMV VMMVMVMM VVVMMMMM ...` view save

correct output
`100000` view save

user output
`24 4 2 1 2 1 3 3 1 ...` view save

Test 11

Group: 2

Verdict: ACCEPTED

input
`VMVMVVMM MMVMVVMM VMVVVMMV VVVMVMVM VVMMVVMM ...` view save

correct output
`25000` view save

user output
`38 4 5 4 5 7 2 3 1 ...` view save

Test 12

Group: 2

Verdict: ACCEPTED

input
`MVMVVMVV VMMVVMVM VMVVVMMM VMMMMVVM MMVVVMMM ...` view save

correct output
`25000` view save

user output
`39 4 6 6 1 2 6 6 5 ...` view save

Test 13

Group: 2

Verdict: ACCEPTED

input
`MVVMMVVV MMVVMVMM VVVMVMVV VMVMMMMM MVVMMVMV ...` view save

correct output
`25000` view save

user output
`38 6 1 2 6 6 5 1 7 ...` view save

Test 14

Group: 2

Verdict: ACCEPTED

input
`VVMMMVMV VMVVVMVV VVMVVVMM MVVMVMVM MMVVMMMM ...` view save

correct output
`25000` view save

user output
`46 1 4 6 1 2 6 6 5 ...` view save

Test 15

Group: 2

Verdict: ACCEPTED

input
`MVVVMVVV MMMMVMMM MVMMMVVM MMVVVMVM VMVVVMMV ...` view save

correct output
`25000` view save

user output
`64 1 4 1 3 3 7 5 4 ...` view save

Test 16

Group: 2

Verdict: ACCEPTED

input
`VMMVMVVM VMMVVVVV MVMVMMVM VMMVVVMV VVMVMMVM ...` view save

correct output
`25000` view save

user output
`23 5 4 5 4 3 3 2 2 ...` view save

Test 17

Group: 2

Verdict: ACCEPTED

input
`MVVMMVVM MVVVMMMV MVVMMVVM VMMVMVMV VMMVMMMM ...` view save

correct output
`25000` view save

user output
`23 4 2 1 1 3 1 2 1 ...` view save

Test 18

Group: 2

Verdict: ACCEPTED

input
`MVMMVVMM VVMMMMVV VMVVVVVM MVMMMVMV VMVVVMVM ...` view save

correct output
`25000` view save

user output
`18 4 2 3 1 3 3 3 2 ...` view save

Test 19

Group: 2

Verdict: ACCEPTED

input
`MVVVVVVV VMMVMVVM VMVMMMMV MVMVMMMM MMVVVMMM ...` view save

correct output
`25000` view save

user output
`28 4 1 4 5 2 1 1 1 ...` view save

Test 20

Group: 2

Verdict: ACCEPTED

input
`MVVVMMMM MMVMMVMV MVVVVVMM VVMMMVVM VVVMVMVV ...` view save

correct output
`25000` view save

user output
`24 4 1 7 4 3 3 1 2 ...` view save

Test 21

Group: 3

Verdict: ACCEPTED

input
`VMVVMVMM MMMMVMMV VVVMVVVV MVMVMVVM VMMVMMMM ...` view save

correct output
`5000` view save

user output
`18 5 4 2 1 3 2 3 1 ...` view save

Test 22

Group: 3

Verdict: ACCEPTED

input
`VVVVVVMM MMMVMMVV VVVVVVMV MMMVMVVV MVVMMMMV ...` view save

correct output
`5000` view save

user output
`50 5 4 7 4 4 2 7 1 ...` view save

Test 23

Group: 3

Verdict: ACCEPTED

input
`MMVMVMVV MMVVMVVM VMMVVMVM MMMMMMVV MVVVVMVM ...` view save

correct output
`5000` view save

user output
`80 4 4 1 5 3 5 7 3 ...` view save

Test 24

Group: 3

Verdict: ACCEPTED

input
`MVMVVMVM VVMVVMVM MMMMVMVV MVVMMVVV MMMMMVVV ...` view save

correct output
`5000` view save

user output
`85 4 5 6 1 2 6 6 5 ...` view save

Test 25

Group: 3

Verdict: ACCEPTED

input
`MVVVMVVM MMMMVVMV VMMVMMVV VVMVMVMV MVMMMVMM ...` view save

correct output
`5000` view save

user output
`36 6 1 2 6 6 5 1 7 ...` view save

Test 26

Group: 3

Verdict: ACCEPTED

input
`VMVMVVVM MMMVVVMM MMVVVVVM VVVVMMVV VMMVVMMV ...` view save

correct output
`5000` view save

user output
`50 6 4 7 2 3 1 4 4 ...` view save

Test 27

Group: 3

Verdict: ACCEPTED

input
`MMVMMVVM MVVVMVMV MVVVMVVM VMVMMMVV VMMVVVVV ...` view save

correct output
`5000` view save

user output
`26 2 4 4 7 3 3 1 1 ...` view save

Test 28

Group: 3

Verdict: ACCEPTED

input
`MVMMVMMV VMVMMMVV MMMMVVMV VVVVMMMM MMMVMMVV ...` view save

correct output
`5000` view save

user output
`43 7 4 6 1 2 6 6 5 ...` view save

Test 29

Group: 3

Verdict: ACCEPTED

input
`VVVVMVMV MMMVVMVM MVVVMVMV VVVMVVMM VMMMMMVV ...` view save

correct output
`5000` view save

user output
`36 2 4 2 4 6 1 2 6 ...` view save

Test 30

Group: 3

Verdict: ACCEPTED

input
`MVVVMVVV MMVVMMMM MVVVVVVV MVMVMMMV VMMMVMMM ...` view save

correct output
`5000` view save

user output
`56 6 1 2 6 6 5 1 7 ...` view save

Test 31

Group: 4

Verdict: ACCEPTED

input
`MVMMVMMV VVVMMVVV VMMVVMMV VVMMMVVM VVVMMMVV ...` view save

correct output
`250` view save

user output
`36 5 4 4 6 7 7 6 6 ...` view save

Test 32

Group: 4

Verdict: ACCEPTED

input
`VVMMVVVM VMVVMMVV VMMMMMMV VVMVMVVV VMMVMVMM ...` view save

correct output
`250` view save

user output
`31 5 4 6 1 2 6 6 5 ...` view save

Test 33

Group: 4

Verdict: ACCEPTED

input
`MMVVMVMV VVVMVMMM VVVVMVMM MVVMVVMV VMMVMVVM ...` view save

correct output
`250` view save

user output
`71 4 5 7 6 2 3 4 6 ...` view save

Test 34

Group: 4

Verdict: ACCEPTED

input
`VMVMVVMV MVVMMMMM MMVVMMMM VMVMVVVM VMMMVVVM ...` view save

correct output
`250` view save

user output
`84 7 4 4 5 6 1 2 6 ...` view save

Test 35

Group: 4

Verdict: ACCEPTED

input
`VMVMVMMM VMMVVVMM MMVMVMMM MVMMVVVV VMMVMMMV ...` view save

correct output
`250` view save

user output
`143 4 4 6 1 2 6 6 5 ...` view save

Test 36

Group: 4

Verdict: ACCEPTED

input
`MVMVMVMM MVMVMMMV MMVVVVMM MVMVVVVV VMMMVVMM ...` view save

correct output
`250` view save

user output
`23 1 1 3 1 3 1 1 1 ...` view save

Test 37

Group: 4

Verdict: ACCEPTED

input
`VMMMMVMM VVMMMVMV VMVVVVVV MVMMMVVM VMVMMVVM ...` view save

correct output
`250` view save

user output
`24 4 2 2 2 3 3 1 2 ...` view save

Test 38

Group: 4

Verdict: ACCEPTED

input
`VMMVMVMV VVMVMVMM MMMVMVMM MVVVVMMM MMVVVMVV ...` view save

correct output
`250` view save

user output
`29 4 1 5 4 7 4 3 2 ...` view save

Test 39

Group: 4

Verdict: ACCEPTED

input
`MMMMMVMV MVVMMMMV VMVVVVMM VMVVVMMV MVMMMVMM ...` view save

correct output
`250` view save

user output
`103 1 5 3 5 7 3 7 6 ...` view save

Test 40

Group: 4

Verdict: ACCEPTED

input
`VMMMMMMV VMMVVVVV MVMMVMMV MVVVVMMV MVVVVMMM ...` view save

correct output
`250` view save

user output
`23 4 1 4 5 1 2 1 1 ...` view save

Putka Open 2015 – 6/6

Shakki

Compiler report

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Test 23

Test 24

Test 25

Test 26

Test 27

Test 28

Test 29

Test 30

Test 31

Test 32

Test 33

Test 34

Test 35

Test 36

Test 37

Test 38

Test 39

Test 40

Tasks

Submissions ()