#include int isLeapYear(int year) { if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) { return 1; // 是闰年 } else { return 0; // 不是闰年 } } int getDayOfYear(int year, int month, int day) { int daysInMonth[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; int dayOfYear = 0; int i; for (i = 1; i < month; i++) { dayOfYear += daysInMonth[i]; } dayOfYear += day; if (isLeapYear(year) && month > 2) { dayOfYear++; } return dayOfYear; } int main() { int year, month, day; scanf("%d %d %d", &year, &month, &day); int dayOfYear = getDayOfYear(year, month, day); printf("%d\n", dayOfYear); return 0; }