Submission #583644

#	Time	Username	Problem	Language	Result	Execution time	Memory
583644		AGE	Političari (COCI20_politicari)	C++14	60 / 70	52 ms	4180 KiB

politicari

#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[1000][1000];
map<pair<int,int>,int>viss;
vector<pair<int,int>>v;
pair<int,int>anss;
main()
{
    v.clear();
    viss.clear();

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

    for(int i=1;i<=n;i++)
        for(int j=1;j<=n;j++)
            cin>>a[i][j];

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

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

    while(1){

        int x=v.size()-1;

        if(viss[{v[x].S,a[v[x].S][v[x].F]}]==1){
            anss.F=v[x].S;
            anss.S=a[v[x].S][v[x].F];
            break;
        }


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

    }

    int ok=0;
    reverse(v.begin(),v.end());
    while((v.back().F!=anss.F||v.back().S!=anss.S)&&m>0)
         v.pop_back(),m--;

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

    if(m==0){

        cout<<v[m].S<<endl;
        return 0;

    }
    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()
      | ^~~~
politicari.cpp: In function 'int main()':
politicari.cpp:46:9: warning: unused variable 'ok' [-Wunused-variable]
   46 |     int ok=0;
      |         ^~

• Subtask 1: 60 / 70