#include <stdio.h>

int kasan()
{
    int i, sum;

    sum = 0;

    for(i=1; i<=10; i++)
    {
        sum = sum + i;
    }

    return sum;
}

int main()
{
    int x;

    x = kasan();

    printf("%d\n", x);

    return 0;
}