Submission #1045033

#	Time	Username	Problem	Language	Result	Execution time	Memory
1045033		vjudge1	Bridges (APIO19_bridges)	C++17	13 / 100	27 ms	636 KiB

bridges

// #pragma GCC optimize("O3,Ofast,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>

using namespace std;


#define lli long long int
#define MP make_pair
#define pb push_back
#define REP(i,n) for(int i = 0; (i) < (n); (i)++)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()


void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
}


const double EPS = 0.00001;
const int INF = 1e9+500;
const int N = 1e3+5;
const int ALPH = 26;
const int LGN = 25;
constexpr int MOD = 1e9+7;
int n,m,q;
vector<vector<array<int, 2> > > adj(N);
vector<int> vis;
vector<int> wr(N);
int ret = 0;

void dfs(int x, int w) {
    vis[x] = 1;
    ret++;
    for(auto c : adj[x]) {
        if(vis[c[0]] || w > wr[c[1]]) continue;
        dfs(c[0], w);
    }
}
int cnt(int x, int w) {
    vis.assign(n + 2, 0);
    ret = 0;
    dfs(x, w);
    return ret;
}
inline void solve() {
    cin>>n>>m;
    REP(i, m) {
        int a, b, d;
        cin >> a >> b >> d;
        adj[a].pb({b, i});
        adj[b].pb({a, i});
        wr[i] = d;
    }
    cin >> q;
    REP(z, q) {
        int t;
        cin >> t;
        if(t == 2) { 
            int x, w;
            cin >> x >> w;
            cout << cnt(x, w) << "\n";
        }
        else {
            int x, w;
            cin >> x >> w;
            wr[x - 1] = w;
        }
    }
  
}
 
signed main() {

    fastio();
    int test = 1;
    //cin>>test;
    while(test--) {
        solve();
    }
    
}

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