제출 #400290

#제출 시각아이디문제언어결과실행 시간메모리
400290Kenzo_1114도시들 (IOI15_towns)C++17
25 / 100
23 ms452 KiB
#include<bits/stdc++.h> #include "towns.h" using namespace std; const int MAXN = 110; int dist[MAXN][MAXN]; int hubDistance(int N, int sub) { if(sub <= 2) { int A = 0, B = 0; for(int i = 1; i < N; i++) { dist[0][i] = dist[i][0] = getDistance(0, i); if(dist[0][i] > dist[0][A]) A = i; } B = A; for(int i = 0; i < N; i++) { if(i != 0 && i != A) dist[A][i] = dist[i][A] = getDistance(A, i); if(dist[A][i] > dist[A][B]) B = i; } if(B != 0) for(int i = 1; i < N; i++) if(i != A) dist[B][i] = dist[i][B] = getDistance(B, i); int d = dist[A][B], R = d; for(int i = 0; i < N; i++) { if(i == A || i == B) continue; int da = dist[A][B] + dist[A][i] - dist[i][B]; da /= 2; R = min(R, max(da, d - da)); } return R; } return 0; }
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