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#include
int year, month, day, n, week, total; scanf(\ if(year <= 1900){
printf(\return 0;
}
if(month >= 13 || month < 1){ }
if(day < 0){ }
switch (month){
case 1: case 3: case 5: case 7: case 8: case 10: case 12: if(day > 31)
{printf(\ break; case 4: case 6: case 9: case 11: if(day > 30)
{printf(\ break;
case 2:if((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
if(day > 29) {printf(\ } else
printf(\return 0;
printf(\return 0;
{
if(day > 28) {printf(\ } break;
}
if((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
{ } else { }
week = (week + total + day - 1) % 7;
week = (year + year / 4 + year / 400 - year / 100) % 7; for(n = 0; n < month; n++) { }
if(n == 0) total = 0;
if(n == 1 || n == 3 || n == 5 || n == 7 || n == 8 || n == 10 ) total += 31; if(n == 2) total += 28;
if(n == 4 || n == 6 || n == 9 || n == 11) total += 30; week = (year + year / 4 + year / 400 - year / 100 - 1) % 7; for(n = 0;n < month; n++) { }
if(n == 0) total = 0;
if(n == 1 || n == 3 || n == 5 || n == 7 || n == 8 || n == 10 ) total += 31; if(n == 2) total += 29;
if(n == 4 || n == 6 || n == 9 || n == 11) total += 30;
printf(\ return 0; }
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