Submission #1306738

---

Source Code Expand

#include<iostream>
#include<algorithm>
using namespace std;
int main() {
	int n;
	cin >> n;
	int sum = 0;
	int l = 0,r=0;
	for (int i = 20; i > -1; i--) {
		if (n&(1 << i)) {
			r += (1 << i);
			cout << '?' << ' ' << l << ' ' << r << endl;
			int a;
			cin >> a;
			sum += a;
			l += (1 << i);
		}
	}
	cout << "!"<< ' ' << sum << endl;
}

Submission Info

Judge Result