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제출 #1109917

#제출 시각아이디문제언어결과실행 시간메모리
1109917ozner77Traffic (IOI10_traffic)C++17
0 / 100
7 ms8784 KiB
#include <traffic.h> #include <bits/stdc++.h> using namespace std; vector<vector<int>> a; vector<vector<long long>> b; vector<int> c; long long d = 0; long long f1(int e, int f) { long long g = 0; for (auto h : a[e]) { if (h == f) continue; b[e].push_back(f1(h, e)); g += b[e].back(); } g += c[e]; return g; } void f2(int e, int f) { int g = 0; for (auto h : a[e]) { if (h == f) continue; b[h].push_back(d - b[e][g]); f2(h, e); g++; } } //Lin me salvaste la vida... int LocateCentre(int e, int f[], int g[], int h[]) { a.resize(e); c.resize(e); b.resize(e); for (int i = 0; i < e - 1; i++) { a[g[i]].push_back(h[i]); a[h[i]].push_back(g[i]); c[i] = f[i]; d += c[i]; } c[e - 1] = f[e - 1]; d += c[e - 1]; long long i = LLONG_MAX; int j = 0; f2(0, -1); f1(0, -1); for (int k = 0; k < e; k++) { long long l = 0; for (auto m : b[k]) { l = max(l, m); } if (l < i) { i = l; j = k; } } return j; }
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