#include <stdio.h>
int daysToMilliseconds(int days) {
return days * 24 * 60 * 60 * 1000;
}
int main(void) {
printf("%d\n", daysToMilliseconds(1));
printf("%d\n", daysToMilliseconds(2));
printf("%d", daysToMilliseconds(13));
}
/*
run:
86400000
172800000
1123200000
*/