#include <stdio.h>
int main(void) {
int p = 50, q = 0;
while (p % 10) {
--p; ++q;
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CmludCBwID0gNTAsIHEgPSAwOwp3aGlsZSAocCAlIDEwKSB7Ci0tcDsgKytxOwp9CnByaW50ZigicSA9ICVkIiwgcSk7CnJldHVybiAwOwp9