Submission #583620

#TimeUsernameProblemLanguageResultExecution timeMemory
583620AGEPolitičari (COCI20_politicari)C++14
65 / 70
60 ms4192 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(); anss={0,0}; viss.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}); viss[{0,1}]=1; viss[{1,2}]=1; while(1){ int x=v.size()-1; if(viss[{v[x].S,a[v[x].S-1][v[x].F-1]}]==1){ anss.F=v[x].S; anss.S=a[v[x].S-1][v[x].F-1]; break; } viss[{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]}); } assert(v.size()>3); reverse(v.begin(),v.end()); while((v.size())&&((*v.rbegin()).F!=anss.F||(*v.rbegin()).S!=anss.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>12); 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()
      | ^~~~
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