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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include<bits/stdc++.h>

using namespace std;

/*

        Bismillahir Rahmanir Rahim
        Problem :
        Problem Link :
        Topics :
        Solver : Masud Parves
        I Love Code More than Sharks Love Blood <3
*/


#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define SZ(a)           (int)a.size()
#define all(a)  a.begin(), a.end()
#define allr(a)  a.rbegin(), a.rend()


#define sf(a)           scanf("%d",&a)
#define sff(a,b)        scanf("%d %d",&a,&b)
#define sfff(a,b,c)     scanf("%d %d %d",&a,&b,&c)

#define f0(i,b) for(int i=0;i<(b);i++)
#define f1(i,b) for(int i=1;i<=(b);i++)
#define f2(i,a,b) for(int i=(a);i<=(b);i++)
#define fr(i,b,a) for(int i=(b);i>=(a);i--)

#define CIN ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL);
#define TEST_CASE(t) for(int zz=1 ; zz<=t ; zz++)
#define PRINT_CASE printf("Case %d: ",zz)
#define Debug(x)            cout<<#x " = "<<(x)<<endl
#define NOT_VISITED 0
#define IS_VISITED 1
#define WHITE 0
#define GRAY 1
#define BLACK 2



int fx[4]= {1,-1,0,0};
int fy[4]= {0,0,1,-1};

/*-----------------------Bitmask------------------*/
//int Set(int N,int pos){return N=N  (1<<pos);}
//int Reset(int N,int pos){return N= N & ~(1<<pos);}
//bool Check(int N,int pos){return (bool)(N & (1<<pos));}
/*------------------------------------------------*/


const double PI = acos(-1.0);
const double EPS = 1e-6;
const int MOD = (int)1e9+7;
const int maxn = (int)2e5+5;

typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef pair<ll, int> plli;
typedef pair<int, ll> pill;



int main() {
    CIN
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    int a,b;
    char ch;

    scanf("%d %c %d", &a, &ch , &b);
    if(ch=='+'){
        cout << a+b << endl;
    }else cout << a-b << endl;


    return 0;
}