#include <stdio.h>

int main() {
    int sum = 0;
    int newlines = 0;
    int n = 0;
    while(1) {
        int ch = getc(stdin);
        if(ch == EOF) break;
        if(ch == '\n') {
            newlines++;
            if(newlines >= 2) break;
            continue;
        }

        newlines = 0;
        ungetc(ch, stdin);
        int x;
        if(scanf("%d", &x) == EOF) break;
        sum += x;
        n++;
        if(n == 5) {
            printf("Sum is %d\n", sum);
            n = 0;
            sum = 0;
        }
    }
    return 0;
}