Submission #583600

#	Time	Username	Problem	Language	Result	Execution time	Memory
583600		AGE	Političari (COCI20_politicari)	C++14	40 / 70	50 ms	1628 KiB

politicari

#include<bits/stdc++.h>
#define F first
#define S second
#define pb push_back

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 (stderr)

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

• Subtask 1: 40 / 70