#include<iostream>#include<cstring>#include<cstdlib>#include<ctime>#include<stdio.h>using namespace std;enum { SIZ = 104, DAY = 24*60*60, YEAR = 365*DAY,};struct tm s, e;int unit_num;char unit_str[SIZ];int mDays[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};int readTime(struct tm &o){ if (scanf("%d%d%d%d%d%d", &o.tm_year, &o.tm_mon, &o.tm_mday, &o.tm_hour, &o.tm_min, &o.tm_sec) < 0) return -1; --o.tm_mon; return 0;}bool isLeap(int y){ return (y%400==0) || (y%100!=0 && y%4==0);}time_t sec_in_year(struct tm &t){ time_t ret = 0; int m = 0; while(m < t.tm_mon){ ret += DAY * mDays[m]; if (m==1 && isLeap(t.tm_year)) ret += DAY; ++m; } ret += (t.tm_mday - 1) * DAY; ret += t.tm_hour * 60 * 60; ret += t.tm_min * 60; ret += t.tm_sec; return ret;}time_t diff(struct tm &a, struct tm &b){ time_t ret = sec_in_year(b) - sec_in_year(a); int y = a.tm_year; while(y < b.tm_year){ ret += YEAR; if (isLeap(y)) ret += DAY; ++y; } return ret;}void fun(){ if (strcmp(unit_str, "second") == 0){ time_t d = diff(s, e); d /= unit_num; printf("%dn", d); return; } if (s.tm_sec) s.tm_min++, s.tm_sec = 0; e.tm_sec = 0; if (strcmp(unit_str, "minute") == 0){ time_t d = diff(s, e); d /= 60; d /= unit_num; printf("%dn", d); return ; } if (s.tm_min) s.tm_hour++, s.tm_min = 0; e.tm_min = 0; if (strcmp(unit_str, "hour") == 0){ time_t d = diff(s, e); d /= 60 * 60; d /= unit_num; printf("%dn", d); return ; } if (s.tm_hour) s.tm_mday++, s.tm_hour = 0; e.tm_hour = 0; if (strcmp(unit_str, "day") == 0){ time_t d = diff(s, e); d /= 24*60*60; d /= unit_num; printf("%dn", d); return ; } if (s.tm_mday > 1) s.tm_mon++, s.tm_mday = 1; e.tm_mday = 1; if (strcmp(unit_str, "month") == 0){ time_t d = 0; while (s.tm_year < e.tm_year){ d += 12; ++s.tm_year; } d += (e.tm_mon - s.tm_mon); d /= unit_num; printf("%dn", d); return ; } if (s.tm_mon) s.tm_year++, s.tm_mon = 0; e.tm_mon = 0; if (strcmp(unit_str, "year") == 0){ time_t d = 0; while (s.tm_year < e.tm_year){ ++d; ++s.tm_year; } d /= unit_num; printf("%dn", d); } else { printf("unknownn"); }}int readIn(){ if (readTime(s) < 0) return 0; readTime(e); scanf("%d%s", &unit_num, unit_str); return 1;}int main(){ while(readIn() > 0){ fun(); } return 0;}
