Submission #628645

#	Time	Username	Problem	Language	Result	Execution time	Memory
628645		abdzag	Prisoner Challenge (IOI22_prison)	C++17	Compilation error	0 ms	0 KiB

prison

#include<bits/stdc++.h>
#include "prison.h"

using namespace std;

std::vector<std::vector<int>> devise_strategy(int N) {
    int n=N;
    vector<vector<int>> ans(N+1);
    ans[0][0]=1;
    for(int i=1;i<=n;i++){
        int next_index=12;
        ans[0][i]=next_index*2+(((1<<next_index)&i)?1:2);
    }   
    for(int i=1;i<=30;i++){
        int current_index=i/2;
        ans[i][0]=current_index%2;
        for(int j=1;j<=n;j++){
            if(j&(1<<current_index)<(i-1)%2){
                if(ans[i][0])ans[i][j]=-1;
                else ans[i][j]=-2;
            }
            else if(j&(1<<current_index)>(i-1)%2){
                if(ans[i][0])ans[i][j]=-2;
                else ans[i][j]=-1;
            }
            else {
                int next_index=current_index-1;
                ans[i][j]=next_index*2+(((1<<next_index)&i)?1:2);
            }
        }
    }
    return ans;
}

int main(){
    return 0;
}

Compilation message (stderr)

prison.cpp: In function 'std::vector<std::vector<int> > devise_strategy(int)':
prison.cpp:18:36: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   18 |             if(j&(1<<current_index)<(i-1)%2){
      |                  ~~~~~~~~~~~~~~~~~~^~~~~~~~
prison.cpp:22:41: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   22 |             else if(j&(1<<current_index)>(i-1)%2){
      |                       ~~~~~~~~~~~~~~~~~~^~~~~~~~
/usr/bin/ld: /tmp/cc9pU2v2.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cctYKKD0.o:prison.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status