oj.uz

Submission #583539

# Submission time Handle Problem Language Result Execution time Memory
583539 2022-06-25T14:22:02 Z AGE Političari (COCI20_politicari) C++14
65 / 70
 53 ms 2268 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()
{
    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--;

    cout<<v[xx].S<<endl;
    return 0;
}

Compilation message

politicari.cpp:13:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   13 | main()
      | ^~~~

Subtask #1
65.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 11 ms 1208 KB Output is correct
3 Correct 35 ms 1800 KB Output is correct
4 Correct 37 ms 2068 KB Output is correct
5 Correct 47 ms 2268 KB Output is correct
6 Correct 51 ms 2252 KB Output is correct
7 Incorrect 1 ms 340 KB Output isn't correct
8 Correct 4 ms 852 KB Output is correct
9 Correct 11 ms 1236 KB Output is correct
10 Correct 53 ms 2060 KB Output is correct
11 Correct 47 ms 2252 KB Output is correct
12 Correct 45 ms 2204 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 4 ms 852 KB Output is correct