Submission #1098269

#	Time	Username	Problem	Language	Result	Execution time	Memory
1098269		vjudge1	Bridges (APIO19_bridges)	C++17	13 / 100	3068 ms	53368 KiB

bridges

#include <bits/stdc++.h>
#define pb push_back
#define int long long
#define S second
#define F first
#define ahah ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
using namespace std;

const int N = 1e6 + 7;
const int MOD = 1e9 + 7;

vector<vector<pair<int, int>>> g(N); 
vector<pair<int, int>> number(N);
int x[N], y[N], w[N];
bool used[N];
set<int> st;

void dfs(int v, int weight) {
    used[v] = true;
    st.insert(v);
    for (auto to : g[v]) {
        if (!used[to.F] and to.S >= weight) {
            dfs(to.F, weight);
        }
    }
    return; 
}

signed main() {
    ahah
    int n, m;
    cin >> n >> m;
    for (int i = 1; i <= m; i++) {
        cin >> x[i] >> y[i] >> w[i];
        g[x[i]].pb({y[i], w[i]});
        g[y[i]].pb({x[i], w[i]});
        number[i] = {g[x[i]].size() - 1, g[y[i]].size() - 1};
    }
    int q;
    cin >> q;
    while (q--) {
        int t, s, weight;
        cin >> t >> s >> weight;
        if (t == 1) {
            int u = x[s], v = y[s];
            g[u][number[s].F].S = weight;
            g[v][number[s].S].S = weight;
        } else {
            st.clear();
            for(int i = 0 ; i <= n ; i++){
                used[i]=false;
            }
            dfs(s, weight);
            cout << st.size() << "\n";
        }
    }
}

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