#include <stdio.h>
int sum(int n) {
int i,c;
for(i=0;i<=n;i++){
c=c+i;
}
return c;
}
int main(void) {
// your code goes here
int a,b;
a=10;
b=sum(a);
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CmludCBzdW0oaW50IG4pIHsKCWludCBpLGM7Cglmb3IoaT0wO2k8PW47aSsrKXsKCQljPWMraTsKCX0KCXJldHVybiBjOwp9CmludCBtYWluKHZvaWQpIHsKCS8vIHlvdXIgY29kZSBnb2VzIGhlcmUKCWludCBhLGI7CglhPTEwOwoJYj1zdW0oYSk7CglwcmludGYoIjHjgYvjgoklZOOBvuOBp+OBruWSjOOBryVkIixhLGIpOwoJcmV0dXJuIDA7Cn0K