제출 #297091

#제출 시각아이디문제언어결과실행 시간메모리
297091alexandra_udristoiu동굴 (IOI13_cave)C++14
100 / 100
859 ms760 KiB
#include "cave.h" #include<algorithm> using namespace std; static int p[5005], v[5005], s[5005]; void exploreCave(int n) { int i, st, dr, mid, j, c; for(i = 0; i < n; i++){ p[i] = -1; } for(i = 0; i < n; i++){ for(j = 0; j < n; j++){ if(p[j] != -1){ v[j] = s[j]; } else{ v[j] = 0; } } if( tryCombination(v) != i ){ c = 0; } else{ c = 1; } st = 0; dr = n - 1; while(st <= dr){ mid = (st + dr) / 2; for(j = 0; j < n; j++){ if(p[j] != -1){ v[j] = s[j]; } else{ if(j <= mid){ v[j] = c; } else{ v[j] = 1 - c; } } } if(tryCombination(v) != i){ dr = mid - 1; } else{ st = mid + 1; } } p[st] = i; s[st] = c; } answer(s, p); }
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