Submission #583645

#TimeUsernameProblemLanguageResultExecution timeMemory
583645AGEPolitičari (COCI20_politicari)C++14
60 / 70
62 ms4224 KiB
#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;
      |         ^~
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