제출 #56238

#제출 시각아이디문제언어결과실행 시간메모리
56238model_code기억 압축 (JOI15_memory)C++17
100 / 100
3449 ms276964 KiB
#include "Memory_lib.h" int Memory(int N, int M) { int target = (M >> 0) & ((1 << 7) - 1); int position = (M >> 7) & ((1 << 7) - 1); int depth = (M >> 14) & ((1 << 7) - 1); int last = (M >> 21) & ((1 << 1) - 1); if (target >= N || position >= N || depth >= N + 1 || last >= 2) { return 0; } switch (Get(position + 1)) { case '<': if (depth++ == target) { last = 0; } break; case '>': if (depth == 0) { return -2; } if (--depth == target) { if (last != 0) { return -2; } } break; case '[': if (depth++ == target) { last = 1; } break; case ']': if (depth == 0) { return -2; } if (--depth == target) { if (last != 1) { return -2; } } break; default: return -2; } if (++position == N) { if (depth != 0) { return -2; } if (++target == N) { return -1; } position = 0; depth = 0; } return target << 0 | position << 7 | depth << 14 | last << 21; }
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