#include <stdio.h>
int main(void) {
int a=100;
int b,c,d;
int count=0;
while(a<1000){
b=a/100;
c=(a/10)%10;
d=a%10;
if((b+c+d)%7==0){
count++;
}
a++;
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CglpbnQgYT0xMDA7CglpbnQgYixjLGQ7CglpbnQgY291bnQ9MDsKCXdoaWxlKGE8MTAwMCl7CgliPWEvMTAwOwoJYz0oYS8xMCklMTA7CglkPWElMTA7CgkJaWYoKGIrYytkKSU3PT0wKXsKCQkJY291bnQrKzsKCQl9CgkJYSsrOwoJfQoJcHJpbnRmKCIlZCIsY291bnQpOwoJcmV0dXJuIDA7Cn0K