CSES - Datatähti 2024 alku - Results
Submission details
Task:Käännöt
Sender:maweiyin24562
Submission time:2023-11-07 22:42:25 +0200
Language:C++ (C++17)
Status:COMPILE ERROR

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:200:29: error: invalid conversion from 'int' to 'time_t*' {aka 'long int*'} [-fpermissive]
  200 |         srand(unsigned(time(1)));
      |                             ^
      |                             |
      |                             int
In file included from /usr/include/c++/11/ctime:42,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:49,
                 from input/code.cpp:1:
/usr/include/time.h:76:29: note:   initializing argument 1 of 'time_t time(time_t*)'
   76 | extern time_t time (time_t *__timer) __THROW;
      |                     ~~~~~~~~^~~~~~~

Code

#include<bits/stdc++.h>
using namespace std;
int a[509];
int b[509];
int n,m,k,inv;
int ansList[1000009];
bool inOrder(){
for(int i=1;i<=n;i++){
if(a[i]!=i)return false;
}
return true;
}
//----------------k=2----------------//
void solve2(){
cout<<"YES"<<endl;
int pos;
for(int i=1;i<=n;i++)if(a[i]!=i){
for(int j=i+1;j<=n;j++){
if(a[j]==i)pos=j;
}
for(int j=pos-1;j>=i;j--){
m++;
ansList[m]=j;
swap(a[j],a[j+1]);
}
}
cout<<m<<endl;
for(int i=1;i<=m;i++){
cout<<ansList[i]<<" ";
}
}
//----------------k=3----------------//
void solve3(){
for(int i=1;i<=n;i+=2){
if(a[i]%2==0){
cout<<"NO"<<endl;
return;
}
}
for(int i=2;i<=n;i+=2){
if(a[i]%2==1){
cout<<"NO"<<endl;
return;
}
}
cout<<"YES"<<endl;
int pos;
for(int i=1;i<=n;i+=2)if(a[i]!=i){
for(int j=i+2;j<=n;j++){
if(a[j]==i)pos=j;
}
for(int j=pos-2;j>=i;j-=2){
m++;
ansList[m]=j;
swap(a[j],a[j+2]);
}
}
for(int i=2;i<=n;i+=2)if(a[i]!=i){
for(int j=i+2;j<=n;j++){
if(a[j]==i)pos=j;
}
for(int j=pos-2;j>=i;j-=2){
m++;
ansList[m]=j;
swap(a[j],a[j+2]);
}
}
cout<<m<<endl;
for(int i=1;i<=m;i++){
cout<<ansList[i]<<" ";
}
}
//----------------k=4----------------//
void reverse4(int p){
swap(b[a[p]],b[a[p+3]]);
swap(a[p],a[p+3]);
swap(b[a[p+1]],b[a[p+2]]);
swap(a[p+1],a[p+2]);
}
void debug(){
for(int i=1;i<=n;i++)cout<<a[i]<<" ";
cout<<endl;
for(int i=1;i<=n;i++)cout<<b[i]<<" ";
cout<<endl;
cout<<endl;
}
void appendAns(int pos){
m++;
ansList[m]=pos;
// Sleep(1000);
// debug();
}
bool inOrderLast5(){
for(int i=n-4;i<n;i++){
if(a[i+1]<a[i])return false;
}
return true;
}
void shuffle(){
for(int i=1;i<=n-3;i++){
int pos=i;
reverse4(pos);
appendAns(pos);
}
}
void solve4(){
if(inv%2==1){
cout<<"NO"<<endl;
return;
}
int cmpM;
while(!inOrder()){
for(int i=1;i<=n-5;i++){
if(b[i]==i)continue;
while(b[i]-i>=4){
int pos=b[i]-3;
reverse4(pos);
appendAns(pos);
}
if(b[i]-i==2){
int pos=b[i]-1;
reverse4(pos);
appendAns(pos);
}
if(b[i]-i==1){
int pos=b[i];
reverse4(pos);
appendAns(pos);
ansList[m]=pos;
pos=b[i]-2;
reverse4(pos);
appendAns(pos);
}
if(b[i]-i==3){
reverse4(i);
appendAns(i);
}
}
int l=n-4;
bool complete=false;
for(int i=1;i<=3;i++){
cmpM=m;
for(int i=1;i<=5;i++){
reverse4(l);
appendAns(l);
if(inOrderLast5()){
complete=true;
break;
}
reverse4(l+1);
appendAns(l+1);
if(inOrderLast5()){
complete=true;
break;
}
}
if(complete)break;
m=cmpM;
reverse4(l-1);
appendAns(l-1);
reverse4(l);
appendAns(l);
reverse4(l-1);
appendAns(l-1);
reverse4(l);
appendAns(l);
reverse4(l+1);
appendAns(l+1);
reverse4(l-1);
appendAns(l-1);
}
if(complete)break;
shuffle();
}
// debug();
cout<<"YES"<<endl;
for(int i=1;i<=m;i++){
cout<<ansList[i]<<" ";
}
}
//----------------k=5----------------//
void solve5(){
;
}
//-----------------------------------//
int main(){
srand(unsigned(time(1)));
cin>>n>>k;
for(int i=1;i<=n;i++){
cin>>a[i];
for(int j=1;j<i;j++){
if(a[j]>a[i]){
inv++;
}
}
b[a[i]]=i;
}
if(k==2){
solve2();
}
else if(k==3){
solve3();
}
else if(k==4){
solve4();
}
else{
solve5();
}
return 0;
}