#include <iostream>
#include <vector>
using namespace std;
 
int main() {
	// your code goes here
	vector<int> v1 = {1,2,3,4,5};
	vector<int> v2 = {6,7,8,9};
	vector<int> result;
	for(int i =0; i < v1.size();i++){
		for(int j =0; j<v2.size();j++){
			int sum = v1[i]+v2[j];
			result.push_back(sum);
		}
	}
	int largest = result[0];
	for(int i =0; i <result.size(); i++){
		if(result[i]>largest){
			largest = result[i];
		}
	}
	cout<<"Maximum pair sum is: "<< largest<<endl;
	return 0;
}

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