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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define N 1000
#define ISNUM(c) (c >= '0' && c <= '9')
#define ISSYM(c) (c != '.' && c != 0 && c != '\n' && !ISNUM(c))
int grab(char *buf) {
if (!ISNUM(*buf)) return 0;
while (ISNUM(*buf)) buf--;
buf++;
int x = atoi(buf);
while (ISNUM(*buf)) *buf++ = '.';
return x;
}
int main() {
char line[N], prev[N];
int i, sum;
sum = 0;
memset(line, '.', N);
memset(prev, '.', N);
while (fgets(&line[1], N-1, stdin) != NULL) {
for (i = 1; line[i]; i++) {
if (ISSYM(line[i-1]) || ISSYM(line[i+1]) ||
ISSYM(prev[i-1]) || ISSYM(prev[i]) || ISSYM(prev[i+1]))
sum += grab(&line[i]);
if (ISSYM(line[i-1]) || ISSYM(line[i]) || ISSYM(line[i+1]))
sum += grab(&prev[i]);
}
memcpy(prev, line, N);
}
printf("%d\n", sum);
return 0;
}
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