oj.uz

Submission #583604

# Submission time Handle Problem Language Result Execution time Memory
583604 2022-06-25T18:35:27 Z AGE Političari (COCI20_politicari) C++14
50 / 70
 70 ms 3632 KB 
#include<bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define int long long
using namespace std;
const int N=1e6,M=2e3,mod=1e9+7;
int a[510][510];
map<pair<int,int>,int>vis;
vector<pair<int,int>>v;
pair<int,int>ans;
main()
{
    v.clear();
    ans={0,0};
    vis.clear();

    int n,m;
    cin>>n>>m;

    for(int i=0;i<n;i++)
        for(int j=0;j<n;j++)
            cin>>a[i][j];

    v.pb({0,1});
    v.pb({1,2});

    vis[{0,1}]=1;
    vis[{1,2}]=1;

    while(1){

        int x=v.size()-1;

        if(vis[{v[x].S,a[v[x].S-1][v[x].F-1]}]==1){
            ans.F=v[x].S;
            ans.S=a[v[x].S-1][v[x].F-1];
            break;
        }


        vis[{v[x].S,a[v[x].S-1][v[x].F-1]}]=1;
        v.pb({v[x].S,a[v[x].S-1][v[x].F-1]});

    }


    reverse(v.begin(),v.end());
    while((v.size())&&((*v.rbegin()).F!=ans.F||(*v.rbegin()).S!=ans.S)&&m>0)
        v.pop_back(),m--;


    reverse(v.begin(),v.end());

    int xx=m%v.size();

    if(xx==0)
        xx=v.size();

    xx--;

    assert(v[xx].S>50);
    cout<<v[xx].S<<endl;

    return 0;
}

Compilation message

politicari.cpp:12:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   12 | main()
      | ^~~~

Subtask #1
50.0 / 70.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 468 KB Execution killed with signal 6
2 Correct 13 ms 1200 KB Output is correct
3 Runtime error 34 ms 3632 KB Execution killed with signal 6
4 Correct 70 ms 2004 KB Output is correct
5 Correct 55 ms 2312 KB Output is correct
6 Correct 53 ms 2208 KB Output is correct
7 Runtime error 1 ms 596 KB Execution killed with signal 6
8 Correct 5 ms 780 KB Output is correct
9 Correct 12 ms 1236 KB Output is correct
10 Correct 51 ms 2000 KB Output is correct
11 Correct 63 ms 2316 KB Output is correct
12 Correct 50 ms 2204 KB Output is correct
13 Runtime error 2 ms 852 KB Execution killed with signal 6
14 Correct 3 ms 852 KB Output is correct