Submission #117683

#	Time	Username	Problem	Language	Result	Execution time	Memory
117683		Plurm	Toy Train (IOI17_train)	C++14	0 / 100	908 ms	1396 KiB

train

#include "train.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> g[5005];
int par[5005];
vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
    // Subtask 3
    int m = u.size();
    for(int i = 0; i < m; i++){
        g[u[i]].push_back(v[i]);
    }
    int n = a.size();
    vector<int> res;
    for(int i = 0; i < n; i++){
        memset(par, -1, sizeof(par));
        queue<int> q;
        q.push(i);
        par[i] = i;
        while(!q.empty()){
            int cur = q.front();
            q.pop();
            for(int nxt : g[cur]){
                if(par[nxt] == -1){
                    par[nxt] = cur;
                    q.push(nxt);
                }
            }
        }
        bool ok = false;
        for(int j = 0; j < n; j++){
            if(r[j]){
                if(par[j] != -1) ok = true;
            }
        }
        res.push_back(ok ? 1 : 0);
    }
	return res;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 0 / 11
• Subtask 5: 0 / 12
• Subtask 6: 0 / 51