#include <stdio.h>
int main(){ int a, b=0; scanf("%d", &a); while (a <= 100){b += a; a++;} printf("%d \n", b); return 0;}ÀÌ·¸°Ô ÇÁ·Î±×·¥À» ÀÛ¼ºÇÏ°í 10À» ´ëÀÔÇÏ´Ï 5005°¡¶ß´Âµ¥ ¾î¶² ¹®Á¦ÀÎÁö ¾Ë·ÁÁֽʽÿä