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Submission #732192

# Submission time Handle Problem Language Result Execution time Memory
732192 2023-04-28T15:49:30 Z Koful123 Političari (COCI20_politicari) C++17
60 / 70
 18 ms 4272 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
#define ff first
#define ss second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()

void solve(){

	int n,k;
	cin >> n >> k; --k;

	vector<vector<int>> v(n),vis(n);
	for(int i = 0; i < n; i++){
		v[i].assign(n,0); vis[i].assign(n,-1);
		for(int j = 0; j < n; j++){
			cin >> v[i][j];
		}
	}

	vector<int> cyc(1,0);

	int last = 0,cur = 1;
	while(vis[last][cur] == -1){
		vis[last][cur] = cyc.size() - 1;
		cyc.push_back(cur);
		int tmp = last; last = cur;
		cur = v[cur][tmp] - 1;	
	}

	cyc.pop_back();
	if(k <= vis[last][cur]){
		assert(false);
		cout << 1 + cyc[vis[last][cur]] << endl;
		return;
	}

	else k -= vis[last][cur];

	vector<int> nw;
	for(int i = vis[last][cur]; i < cyc.size(); i++){
		nw.push_back(cyc[i]);
	}

	cout << 1 + nw[k % nw.size()] << endl;
}
 
signed main(){ 

	ios::sync_with_stdio(0);
	cin.tie(0);
 
	int t = 1;
//	cin >> t;
 
	while(t--)
		solve();
 	
	return 0;
}

Compilation message

politicari.cpp: In function 'void solve()':
politicari.cpp:44:32: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |  for(int i = vis[last][cur]; i < cyc.size(); i++){
      |                              ~~^~~~~~~~~~~~

Subtask #1
60.0 / 70.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 6
2 Correct 4 ms 980 KB Output is correct
3 Correct 10 ms 2772 KB Output is correct
4 Correct 13 ms 3412 KB Output is correct
5 Correct 17 ms 4184 KB Output is correct
6 Correct 18 ms 4168 KB Output is correct
7 Runtime error 1 ms 468 KB Execution killed with signal 6
8 Correct 2 ms 596 KB Output is correct
9 Correct 4 ms 1108 KB Output is correct
10 Correct 14 ms 3412 KB Output is correct
11 Correct 17 ms 4180 KB Output is correct
12 Correct 16 ms 4272 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 596 KB Output is correct