Help me in solving SUMNEQ problem

help
,
1

My issue

I am unable to solve thus problem

My code

#include <iostream>
using namespace std;

int main() {
	// your code goes here
	       int N;
	    int out = 0;
	    for (int i = 1; i<N; i++) {
	        for (int j = N-1; j > 0; j--) {
	            if (i+j == N) out++;
	        }
	    }
	    
	cout << out << endl;
	    	return 0;
}

Learning course: Basic Math using C++
Problem Link: CodeChef: Practical coding for everyone

2

@rr2731
print n-1;