#include <bits/stdc++.h>

int main(int argc, char **argv) {
    FILE *input = fopen(argv[1], "r");
    struct tm result;
    struct char buffer[2000];
    time_t prev;
    bool first = true;
    while (fgets(buffer, 2000, input)) {
        struct tm res;
        strptime(buffer, "%Y/%m/%d %H:%M:%S\n", &res);
        time_t cur = mktime(&res);
        if (!first) {
            printf("%d\n", cur - prev);
        }
        prev = cur;
        first = false;
    }
    fclose(input);

}