#include <stdio.h>
int main(void) {
// your code goes here
int a,b;
if(a>0&&a<=100){
b=(int)a/10;
if(b==9||10){
}else if(b==8){
}else if(b==7){
}else if(b==6){
}else{
}
}
return 0;
}
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