CSES - Putka Open 2015 – finaali - Results
Submission details
Task:Omenat
Sender:
Submission time:2015-12-20 15:45:12 +0200
Language:C++
Status:READY
Result:0
Feedback
groupverdictscore
#10
Test results
testverdicttimescore
#1--0details
#2--0details
#3--0details
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#9--0details
#10--0details

Code

#include <bits/stdc++.h>
#define F first
#define S second
using namespace std;
typedef long long ll;
typedef long double ld;
ll p[111];
int n;
const ll inf=1e18;
ll eval(vector<int>&a){
ll v1=0;
ll v2=0;
for (int i=0;i<n;i++){
if (a[i]==1){
v1+=p[i];
}
else{
v2+=p[i];
}
}
return llabs(v1-v2);
}
vector<int> solve1(){
vector<pair<ll, int> > pp(n);
vector<int> r(n);
for (int i=0;i<n;i++){
pp[i]={p[i], i};
}
sort(pp.rbegin(), pp.rend());
ll p1=0;
ll p2=0;
for (int i=0;i<n;i++){
if (p1<p2){
p1+=pp[i].F;
r[pp[i].S]=1;
}
else{
p2+=pp[i].F;
r[pp[i].S]=2;
}
}
return r;
}
int ps[111];
int ph[20][55];
int vv[111];
ll ss(int t){
if (ps[t]==0) return 0;
ll bv=inf;
ll bvv=inf;
int bb=0;
for (int i=0;i<(1<<ps[t]);i++){
ll v1=0;
ll v2=0;
for (int j=0;j<ps[t];j++){
if (i&(1<<j)){
v1+=p[ph[t][j]];
}
else{
v2+=p[ph[t][j]];
}
}
if (llabs(v1-v2)<bv){
bv=llabs(v1-v2);
bvv=v1-v2;
bb=i;
}
}
for (int j=0;j<ps[t];j++){
if (bb&(1<<j)){
vv[ph[t][j]]=1;
}
else{
vv[ph[t][j]]=2;
}
}
return bvv;
}
vector<int> solve2(int pk){
for (int i=0;i<pk;i++){
ps[i]=0;
}
vector<int> asd(n);
for (int i=0;i<n;i++){
asd[i]=i/pk;
}
random_shuffle(asd.begin(), asd.end());
for (int i=0;i<n;i++){
int tp=asd[i];
ph[tp][ps[tp]++]=i;
}
vector<ll> lol;
for (int i=0;i<pk;i++){
lol.push_back(ss(i));
}
int bb=0;
ll bv=inf;
for (int i=0;i<(1<<pk);i++){
ll v=0;
for (int j=0;j<pk;j++){
if (i&(1<<j)){
v-=lol[j];
}
else{
v+=lol[j];
}
}
if (llabs(v)<bv){
bv=llabs(v);
bb=i;
}
}
vector<int> r(n);
for (int j=0;j<pk;j++){
if (bb&(1<<j)){
for (int t=0;t<ps[j];t++){
vv[ph[j][t]]=3-vv[ph[j][t]];
}
}
}
for (int i=0;i<n;i++){
r[i]=vv[i];
}
return r;
}
int main(){
srand(time(0));
ios_base::sync_with_stdio(0);
cin.tie(0);
cin>>n;
clock_t t0=clock();
vector<pair<ll, int> > pp(n);
for (int i=0;i<n;i++){
cin>>p[i];
}
vector<int> v=solve1();
ll val=eval(v);
while (1){
vector<int> tv=solve2(9);
if (eval(tv)<val){
v=tv;
}
clock_t t1=clock();
if (((double)(t1-t0)/CLOCKS_PER_SEC)>0.8) break;
}
for (int i=0;i<n;i++){
cout<<v[i]<<" ";
}
}

Test details

Test 1

Verdict:

input
95
779724552 231968220 985023789 ...

correct output
(empty)

user output
(empty)

Test 2

Verdict:

input
85
229722261 51722691 862338862 8...

correct output
(empty)

user output
(empty)

Test 3

Verdict:

input
97
398995377 989444445 634573915 ...

correct output
(empty)

user output
(empty)

Test 4

Verdict:

input
99
843687873 164010938 51269970 4...

correct output
(empty)

user output
(empty)

Test 5

Verdict:

input
90
864611617 418460939 773297829 ...

correct output
(empty)

user output
(empty)

Test 6

Verdict:

input
92
289890246 25801423 763027596 7...

correct output
(empty)

user output
(empty)

Test 7

Verdict:

input
89
879039800 50522278 850785072 4...

correct output
(empty)

user output
(empty)

Test 8

Verdict:

input
96
27192469 222283781 681532515 1...

correct output
(empty)

user output
(empty)

Test 9

Verdict:

input
100
186459081 254674429 394007236 ...

correct output
(empty)

user output
(empty)

Test 10

Verdict:

input
98
612168861 979831717 671087051 ...

correct output
(empty)

user output
(empty)