#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX 20000
#define offset 96	

int main(void) 
{
	int i, j, sum = 0, sum_now = 0;	
	char *str = malloc(MAX * sizeof(char));
	
	while(1) {
		fgets(str, MAX + 1, stdin);
		
		int size = strlen(str) - 1;
		int *values = malloc(size * sizeof(int));
	 
		for (i = 0; i < size; i++) {
			values[i] = (int) str[i] - offset;
		}
		if (size < 10) {
			for (i = 0; i < size; i++) {
				sum += values[i];
			}
			printf("%d", sum);
			return 0;
		} else {
			for (i = 0; i < 10; i++) {
				sum += values[i];
			}
			for (j = 1; j < size - 10; j++){
				for (i = j; i < j + 10; i++) {
					 sum_now += values[i];
				}
				if (sum_now >= sum) {
			 		sum = sum_now;
					sum_now = 0;
				} else {
					sum_now = 0;
				}		
			}
			printf("%d", sum);
			return 0;
		}
	}
}