Submission #252139

#	Time	Username	Problem	Language	Result	Execution time	Memory
252139		Erkhemkhuu	Bridges (APIO19_bridges)	C++17	Compilation error	0 ms	0 KiB

bridges

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define mp make_pair
#define F first
#define S second
const ll N = 1005;
bool vis[N];
tuple <ll, ll, ll> brid[N];
vector <vector <ll> > adj(N);
vector <ll> wp[N][N];
ll dfs(ll v, ll w) {
    ll ans = 1;
    vis[v] = true;
    for(auto &u: adj[v])
        if(vis[u]) continue;
        for(auto &x: wp[v][u])
            if(w <= x) ans += dfs(u, w);
    return ans;
}
int main() {
    ll n, m, i, v, u, w, q, t, l, r;
    cin >> n >> m;
    for(i = 0; i < m; i++) {
        cin >> v >> u >> w;
        v--; u--;
        adj[v].pb(u);
        adj[u].pb(v);
        wp[v][u].pb(w);
        wp[u][v].pb(w);
        brid[i] = {v, u, wp[v][u].size() - 1};
    }
    cin >> q;
    while(q--) {
        cin >> t >> l >> r;
        l--;
        if(t == 1) {
            auto temp = brid[l];
            ll x = get <0> (temp);
            ll y = get <1> (temp);
            ll z = get <2> (temp);
            wp[x][y][z] = wp[y][x][z] = r;
        }
        else {
            memset(vis, false, sizeof(vis));
            cout << dfs(l, r) << "\n";
        }
    }
    return 0;
}

Compilation message (stderr)

bridges.cpp: In function 'long long int dfs(long long int, long long int)':
bridges.cpp:16:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(auto &u: adj[v])
     ^~~
bridges.cpp:18:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
         for(auto &x: wp[v][u])
         ^~~
bridges.cpp:18:28: error: 'u' was not declared in this scope
         for(auto &x: wp[v][u])
                            ^