#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>


int resolver(char *expressao, int *i){
    // Caso 1: expressao[*i] e qualquer outra coisa
    int result = 0;
    while( expressao[*i] != '\0'){
        // Caso 3: expressao[*i] == ')'
        if(expressao[*i] == ')'){
            (*i)++;
            return result;
        }
        else if(expressao[*i] == '('){
            if((*i) == 0){
                result = resolver(expressao, i);
            } else{
                if(expressao[(*i)-1] == '+'){
                    result += resolver(expressao, (*i)+1);
                }
                if(expressao[(*i)-1] == '*'){
                    result *= resolver(expressao, (*i)+1);
                }
                if(expressao[(*i)-1] == '/'){
                    result /= resolver(expressao, (*i)+1); // 3 + 34 *(6 +3 + 2 + (3 + 5 + (2 * 9))) + 3
                }
                if(expressao[(*i)-1] == '-'){
                    result -= resolver(expressao, (*i)+1);
                }
            }
            (*i)++;
        }
        else{
            if((*i)== 0){
                result = expressao[*i] - '0';
            }
            else if(expressao[(*i)-1] == '+'){
                result += expressao[*i] - '0';
            }
            else if(expressao[(*i)-1] == '*'){
                result *= expressao[*i] - '0';
            }
            else if(expressao[(*i)-1] == '/'){
                result /= expressao[*i] - '0';
            }
            else if(expressao[(*i)-1] == '-'){
                result -= expressao[*i] - '0';
            }
            (*i) +=2;
        }

        if(expressao[*i] == '+' || expressao[*i] == '*' || expressao[*i] == '-' || expressao[*i] == '/'){
            (*i)++;
        }

        if((*i) >= strlen(expressao)){
            break;
        }
    }
    return result;
}

int main() {
    char expressao[30] = {0};
    scanf("%s", expressao);

    int inicio = 0;
    int r = resolver(expressao, &inicio);
    printf("%d\n", r);

    return 0;
}