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#include "leetcode.h"
class Solution {
public:
int guessNumber(int n) {
int left = 1, right = n, mid = n / 2;
while (left <= right) {
int ans = guess(mid); // guess is api call
if (!ans)
return mid;
left = ans < 0 ? left : mid + 1;
right = ans < 0 ? mid - 1 : right;
mid = left + (right - left) / 2;
}
return -1;
}
};
int main() {
Solution obj;
cout << obj.guessNumber(10);
}
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