ACM 10783 - Odd Sum

#include <stdio.h>

int main()
{
    int i, n, j, s, d;
    scanf("%d", &n);
    for (i = 0;i < n; i ++)
    {
        int total = 0;
        scanf("%d", &s);
        scanf("%d", &d);
        for (j = s; j <= d; j ++)
            if (j % 2 == 1) total += j;
        printf("Case %d: %d\n",i+1 ,total);            
    }
    return 0;
}

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