Submission #1031766

#	Time	Username	Problem	Language	Result	Execution time	Memory
1031766		Halym2007	Bridges (APIO19_bridges)	C++17	13 / 100	3083 ms	10824 KiB

bridges

#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define sz size()
#define ll long long
#define pii pair <int, int> 
const int N = 1e5 + 5;

int l[N], r[N], n, m, jog, w[N];
bool vis[N];
vector <pii> v[N];

void dfs (int x, int y) {
	jog++;
	vis[x] = 1;
	for (pii i : v[x]) {
		if (vis[i.ff] or y > i.ss) continue;
		dfs (i.ff, y);
	}
}


int main () {
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
//	freopen ("input.txt", "r", stdin);
	cin >> n >> m;
	for (int i = 1; i <= m; ++i) {
		cin >> l[i] >> r[i] >> w[i];
	}
	int q;
	cin >> q;
	while ( q-- ) {
		int typ, l1, r1;
		cin >> typ >> l1 >> r1;
		if (typ == 2) {
			for (int i = 1; i <= m; ++i) {
				v[l[i]].pb ({r[i], w[i]});
				v[r[i]].pb ({l[i], w[i]});
			}
			jog = 0;
			dfs (l1, r1);
			for (int i = 1; i <= n; ++i) {
				vis[i] = 0;
				v[i].clear();
			}
			cout << jog << "\n";
		}
		else {
			w[l1] = r1;
		}
	}
}

• Subtask 1: 13 / 13
• Subtask 2: 0 / 16
• Subtask 3: 0 / 17
• Subtask 4: 0 / 14
• Subtask 5: 0 / 13
• Subtask 6: 0 / 27