제출 #288621

#제출 시각아이디문제언어결과실행 시간메모리
288621emil_physmath철로 (IOI14_rail)C++17
30 / 100
120 ms47936 KiB
#include "rail.h" #include <map> using namespace std; map<int, int> cache[1000'000]; int GetDistance(int u, int v) { auto it = cache[u].find(v); if (it != cache[u].end()) return it->second; return cache[u][v] = getDistance(u, v); } void findLocation(int n, int first, int location[], int stype[]) { int mn = 1; for (int i = 1; i < n; ++i) { if (GetDistance(0, i) < GetDistance(0, mn)) mn = i; } location[0] = first; stype[0] = 1; location[mn] = first + GetDistance(0, mn); stype[mn] = 2; for (int i = 1; i < n; ++i) { if (i == mn) continue; if (GetDistance(0, mn) + GetDistance(mn, i) == GetDistance(0, i)) { stype[i] = 1; location[i] = location[mn] - GetDistance(mn, i); } else { stype[i] = 2; location[i] = first + GetDistance(0, i); } } }
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