Problem:
Score : 100 points

Problem Statement

Joisino wants to evaluate the formula "A op B".
Here, A and B are integers, and the binary operator op is either + or -.
Your task is to evaluate the formula instead of her.

Constraints

1≦A,B≦10^9

op is either + or -.

Input

The input is given from Standard Input in the following format:

A op B

Output

Evaluate the formula and print the result.

Sample Input 1

1 + 2

Sample Output 1

3

Since 1 + 2 = 3, the output should be 3.

Sample Input 2

5 - 7

Sample Output 2

-2

Solution in C (GCC 5.4.1) (judge verdict: Runtime Error)

#include<stdio.h>
int N, M, T[100], P, X, sum, max, i, j;
int main(){
  scanf("%d\n", &N);
  for(i=0; i<N; i++){
    scanf("%d", &T[i]);
    sum+=T[i];
  }
  scanf("%d\n", &M);
  for(i=0; i<M; i++){
    scanf("%d%d", &P, &X);
    if(T[P]>max+X){max=T[P]-X;}
  }
  printf("%d\n", sum-max);
}