#include <iostream>
using namespace std;
 
int main() {
	int arr[] ={1,2,3,4,5,6,7};
	int n = sizeof(arr)/sizeof(arr[0]);
	int even=0,odd=0;
	for(int i=0 ; i < n-2; i++){
		for(int j =i+1; j <n-1; j++){
			for(int k = j+1; k<n; k++){
				int sum = arr[i]+arr[j]+arr[k];
				if(sum %2==0){
					even++;
					cout << "Even sum: "<<sum<<endl;
				}
				else{
					odd++;
					cout <<"Odd sum: "<< sum<<endl;
				}
			}
		}
	} 
	cout << "No of odd sums: "<< odd<<endl;
	cout << "No of even sums: "<< even;
 
	return 0;
}

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