04. Equal Pairs

#include <iostream>
#include <string>
#include <cmath>

using namespace std;

int main () {

    int number;
    cin >> number;

    int sum = 0;
    int currentSum = 0;
    int diff = 0;
    int maxDiff = 0;

    for(int i = 1; i <= number; i++) {
        int num1, num2;
        cin >> num1 >> num2;

        if (i == 1) {
            sum = num1 + num2;
        }

        if (i > 1) {
            currentSum = num1 + num2;

            if (currentSum != sum) {
                diff = currentSum - sum;
                currentSum = sum;
            }

            if (diff > maxDiff) {
                maxDiff = diff;
            }
            currentSum = 0;
            diff = 0;
        }
    }


    if (maxDiff != 0) {
        cout << "No, maxdiff=" << maxDiff << endl;
    } else {
        cout << "Yes, value=" << sum << endl;
    }

    return 0;
}