Submission #270704

#	Time	Username	Problem	Language	Result	Execution time	Memory
270704		imeimi2000	기억 압축 (JOI15_memory)	C++17	100 / 100	3053 ms	283772 KiB

memory

#include "Memory_lib.h"
 
int Memory(int N, int M) {
    int check = M & 127;
    int pos = (M >> 7) & 127;
    int sum = (M >> 14) & 127;
    int type = (M >> 21);
    if (N <= pos) return -1;
    if (check == N) {
        char c = Get(pos + 1);
        if (c == '<' || c == '[') ++sum;
        else --sum;
        if (sum < 0) return -2;
        if (++pos == N) {
            if (sum != 0) return -2;
            return -1;
        }
        int ret = (check | (pos << 7) | (sum << 14) | (type << 21));
        if ((1 << 22) <= ret) return -1;
        return ret;
    }
    switch (Get(pos + 1)) {
    case '<':
        if (check == pos) type = 0;
        else if (check < pos) ++sum;
        break;
    case '>':
        if (check == pos) {
            pos = check++;
            sum = 0;
            break;
        }
        else if (check < pos) if (--sum < 0) {
            if (type != 0) return -2;
            pos = check++;
            sum = 0;
            break;
        }
        break;
    case '[':
        if (check == pos) type = 1;
        else if (check < pos) ++sum;
        break;
    case ']':
        if (check == pos) {
            pos = check++;
            sum = 0;
            break;
        }
        else if (check < pos) if (--sum < 0) {
            if (type != 1) return -2;
            pos = check++;
            sum = 0;
            break;
        }
        break;
    }
    if (check == N) {
        pos = 0;
        sum = 0;
    }
    else if (++pos == N) return -2;
    int ret = (check | (pos << 7) | (sum << 14) | (type << 21));
    if ((1 << 22) <= ret) return -1;
    return ret;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 60 / 60