제출 #393206

#제출 시각아이디문제언어결과실행 시간메모리
393206Gamma동굴 (IOI13_cave)C++14
0 / 100
13 ms444 KiB
#include "cave.h" #include <bits/stdc++.h> void exploreCave(int N) { int s[N], d[N], a[N], y; memset(d, -1, sizeof d); for(int i = 0; i < N; i++) { memset(a, 0, sizeof a); for(int j = 0; j < i; j++) { a[j] = s[d[j]]; } y = tryCombination(a); if(y < i && y != -1) { int S = i, e = N - 1, mid; while(S <= e) { mid = (S + e) / 2; for(int j = S; j < mid; j++) { a[j] = 1; } y = tryCombination(a); if(y < i && y != -1) { a[mid] = 1; y = tryCombination(a); if(y < i && y != -1) { S = mid + 1; } else { d[i] = mid; s[mid] = 1; break; } } else { e = mid - 1; for(int j = S; j < mid; j++) { a[j] = 0; } } } }else { int S = i, e = N - 1, mid; while(S <= e) { mid = (S + e) / 2; for(int j = S; j < mid; j++) { a[j] = 1; } y = tryCombination(a); if(y < i && y != -1) { e = mid - 1; for(int j = S; j < mid; j++) { a[j] = 0; } } else { a[mid] = 1; y = tryCombination(a); if(y < i && y != -1) { d[i] = mid; s[mid] = 1; break; } else { S = mid + 1; } } } } } answer(s, d); }
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