Submission #162985

#	Time	Username	Problem	Language	Result	Execution time	Memory
162985		Minnakhmetov	Toll (BOI17_toll)	C++14	7 / 100	3035 ms	4600 KiB

toll

#include <bits/stdc++.h>
    
#define ll long long
#define all(aaa) aaa.begin(), aaa.end()
 
using namespace std;

struct E {
	int a, b, w;
};

const int N = 1e5 + 5, INF = 1e9;
E e[N];
int d[N];
 
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);

    int n, m, k, o;
    cin >> k >> n >> m >> o;

    for (int i = 0; i < m; i++) {
    	cin >> e[i].a >> e[i].b >> e[i].w;
    }

    sort(e, e + m, [](E x, E y) {
    	return x.a < y.a;
    });

    for (int i = 0; i < o; i++) {
    	int x, y;
    	cin >> x >> y;

    	fill(d, d + n, INF);

    	d[x] = 0;

    	for (int j = 0; j < m; j++) {
    		d[e[j].b] = min(d[e[j].b], d[e[j].a] + e[j].w);
    	}

    	if (d[y] == INF)
    		cout << "-1\n";
    	else
    		cout << d[y] << "\n";
    }

    return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 10
• Subtask 3: 0 / 8
• Subtask 4: 0 / 31
• Subtask 5: 0 / 44