Submission #1061243

#	Time	Username	Problem	Language	Result	Execution time	Memory
1061243		thinknoexit	Reconstruction Project (JOI22_reconstruction)	C++17	Compilation error	0 ms	0 KiB

reconstruction

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
struct Edge {
    int u, v, w;
    bool operator < (const Edge& o) const {
        return w < o.w;
    }
} e[100100], e2[100100];
int p[505];
int fr(int i) {
    return p[i] == i ? i : p[i] = fr(p[i]);
}
int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int n, m;
    cin >> n >> m;
    for (int i = 1;i <= m;i++) {
        cin >> e[i].u >> e[i].v >> e[i].w;
    }
    sort(e + 1, e + 1 + m);
    while (q--) {
        int x;
        cin >> x;
        for (int i = 1;i <= m;i++) {
            e2[i].u = e[i].u;
            e2[i].v = e[i].v;
            e2[i].w = abs(e[i].w - x);
        }
        for (int i = 1;i <= n;i++) p[i] = i;
        sort(e2 + 1, e2 + 1 + m);
        ll ans = 0;
        for (int i = 1;i <= m;i++) {
            int pu = fr(e2[i].u), pv = fr(e2[i].v);
            if (pu == pv) continue;
            ans += e2[i].w;
            p[pu] = pv;
        }
        cout << ans << '\n';
    }
    return 0;
}

Compilation message (stderr)

reconstruction.cpp: In function 'int main()':
reconstruction.cpp:22:12: error: 'q' was not declared in this scope
   22 |     while (q--) {
      |            ^