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

#define MAX 100

char stack[MAX];
int top = -1;

void push(char c) {
    stack[++top] = c;
}

char pop() {
    return stack[top--];
}

char peek() {
    return stack[top];
}

int precedence(char op) {
    if (op == '+' || op == '-') return 1;
    if (op == '*' || op == '/') return 2;
    return 0;
}

int isOperator(char c) {
    return (c == '+' || c == '-' || c == '*' || c == '/');
}

void infixToPostfix(char* infix) {
    char postfix[MAX];
    int k = 0;
    int len = strlen(infix);

    for (int i = 0; i < len; i++) {
        char c = infix[i];

        if (isalnum(c)) {
            postfix[k++] = c; 
            
        }
        else if (c == '(') {
            
            };
        }
        else if (c == ')') {
            while (top != -1 && peek() != '(') {
                postfix[k++] = pop();
            }
            pop(); 
            
        }
        else if (isOperator(c)) {
            while (top != -1 && precedence(peek()) >= precedence(c)) {
                postfix[k++] = pop();
            }
            push(c);
        }
    }



    while (top != -1) {
        postfix[k++] = pop();
    }

    postfix[k] = '\0';
    printf("%s\n", postfix);
}

int main() {
    char infix[MAX];
    scanf("%s", infix);  
    
    infixToPostfix(infix);
    return 0;
}