Submission #774073

#	Time	Username	Problem	Language	Result	Execution time	Memory
774073		jasmin	Prisoner Challenge (IOI22_prison)	C++17	Compilation error	0 ms	0 KiB

prison

#include "prison.h"
#include<bits/stdc++.h>
using namespace std;

std::vector<std::vector<int>> devise_strategy(int n) {

    vector<int> ans(n+1, -1);
    
    ans[0][0]=0;
    for(int i=1; i<=n; i++){
        ans[i][0]=1;
    }

    for(int i=1; i<=n; i++){
        for(int j=1; j<=n; j++){

            if(j<i){
                ans[i][j]=-2;
            }
            else{
                ans[i][j]=-1;
            }

        }
    }

    return ans;
}

Compilation message (stderr)

prison.cpp: In function 'std::vector<std::vector<int> > devise_strategy(int)':
prison.cpp:9:11: error: invalid types '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}[int]' for array subscript
    9 |     ans[0][0]=0;
      |           ^
prison.cpp:11:15: error: invalid types '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}[int]' for array subscript
   11 |         ans[i][0]=1;
      |               ^
prison.cpp:18:23: error: invalid types '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}[int]' for array subscript
   18 |                 ans[i][j]=-2;
      |                       ^
prison.cpp:21:23: error: invalid types '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}[int]' for array subscript
   21 |                 ans[i][j]=-1;
      |                       ^
prison.cpp:27:12: error: could not convert 'ans' from 'vector<int>' to 'vector<std::vector<int>>'
   27 |     return ans;
      |            ^~~
      |            |
      |            vector<int>