#include <stdio.h>
int main(void) {
int i,data[20],s=0,a=0,b=0,c=0,d=0;
for(i=0;i<20;i++)
for(i=0;i<20;i++){
if(data[i]>=90)s++;
else if(data[i]>=80)a++;
else if(data[i]>=70)b++;
else if(data[i]>=60)c++;
else
d++;
}
printf("s:%d,a:%d,b:%d,c:%d,d:%d",s
,a
,b
,c
,d
); return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CmludCBpLGRhdGFbMjBdLHM9MCxhPTAsYj0wLGM9MCxkPTA7CmZvcihpPTA7aTwyMDtpKyspCnNjYW5mKCIlZCIsJmRhdGFbaV0pOwpmb3IoaT0wO2k8MjA7aSsrKXsKCWlmKGRhdGFbaV0+PTkwKXMrKzsKCWVsc2UgaWYoZGF0YVtpXT49ODApYSsrOwoJZWxzZSBpZihkYXRhW2ldPj03MCliKys7CgllbHNlIGlmKGRhdGFbaV0+PTYwKWMrKzsKCWVsc2UKCWQrKzsKCX0KCXByaW50ZigiczolZCxhOiVkLGI6JWQsYzolZCxkOiVkIixzLGEsYixjLGQpOwoJcmV0dXJuIDA7Cn0K