Your task is to Calculate a + b.InputInput contains multiple test cases. Each test case consists of a pair of integers a and b（0<=a,b<=20）, separated by a space, one pair of integers per line.OutputFor each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.Sample Input1

1Sample Output

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#include <iostream>using namespace std;int main(){    int a,b;    while(cin>>a>>b)        cout<<(a+b)<<endl;    return 0;}