#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

enum { SIZE = 16 };

int main(void) {
    long long int res = 0;
    unsigned long long num = 0;
    int sign = 0, tmp = 0;

    unsigned char line[16];


    while ((tmp = read(0, line, SIZE)) != 0) {
        //printf("%d\n", tmp);
        for (int i = 0; i < tmp; i++) {
            //printf("i %d\n",i );
            if (isspace(line[i])) {
                //printf("1\n");
                if (sign == 1) {
                    num = ~num + 1;
                    sign = 0;
                    printf("%lld\n", num);
                }

                res += num;
                num = 0;

            } else if (line[i] == '-') {

                sign = 1;
            } else if (line[i] != '+') {

                num = num * 10 + line[i] -'0';
                //printf("-- %lld\n", num);
            }
        }
        memset(line, 0, SIZE);

    }

    printf("%lld\n", res);
    return 0;
}