#include <stdio.h>
 
int main(void)
{
    int n, m, res = 0;
 
    if (scanf("%d %d", &n, &m) != 2 || n < 0 || m < 0) {
        printf("Inpute error");
        return 0;
    }
 
    for(int i = 0; i <= n; i++) {
        for(int j = 0; j <= m; j++) {
            if (i + j >= 10) {
                goto l_res;
            }
 
            res += (i + j);
        }
    }
 
    l_res: printf("%d", res);
 
    return 0;
 
}
 
 

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4 10