#include <stdio.h>
//課題B-1: 1からnまでの和を求めるコードを完成させてください
int sum(int n){
int i, s = 0;
for(i = 1; i <= n; i++)
s += i;
return s;
}
int main(void) {
int a,b;
a = 10;
b = sum(a);
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+Ci8v6Kqy6aGMQi0xOiAx44GL44KJbuOBvuOBp+OBruWSjOOCkuaxguOCgeOCi+OCs+ODvOODieOCkuWujOaIkOOBleOBm+OBpuOBj+OBoOOBleOBhAppbnQgc3VtKGludCBuKXsKICAgIGludCBpLCBzID0gMDsKICAgIGZvcihpID0gMTsgaSA8PSBuOyBpKyspCiAgICAgICAgcyArPSBpOwogICAgcmV0dXJuIHM7Cn0KaW50IG1haW4odm9pZCkgewoJaW50IGEsYjsKICAgIGEgPSAxMDsKICAgIGIgPSBzdW0oYSk7CiAgICBwcmludGYoIjHjgYvjgoklZOOBvuOBp+OBruWSjOOBryVkIiwgYSxiICk7CglyZXR1cm4gMDsKfQo=