Submission #895203

#	Time	Username	Problem	Language	Result	Execution time	Memory
895203		Irate	Hotter Colder (IOI10_hottercolder)	C++14	25 / 100	452 ms	8276 KiB

hottercolder

#include<bits/stdc++.h>
using namespace std;
int Guess(int n);
// int Guess(int n){
//     cout << "? " << n << ": ";
//     int num;
//     cin >> num;
//     return num;
// }
int HC(int n){
    int l = 1, r = n, last = 1;
    Guess(1);
    while(l < r){
        int mid = (l + r) >> 1;
        // cout << l << ", " << r << ": " << last  << '\n';
        if(last == l){
            int num = Guess(r);
            if(num == -1){
                r = mid;
                last = r;
                Guess(r);
            }
            else if(num == 1){
                l = mid + 1;
                last = l;
                Guess(l);
            }
            else{
                return (l + r) >> 1;
            }
        }
        else{
            int num = Guess(l);
            if(num == 1){
                r = mid;
                last = r;
                Guess(r);
            }
            else if(num == -1){
                l = mid + 1;
                last = l;
                Guess(l);
            }
            else return (l + r) >> 1;
        }
    }
    return l;
}
// int main(){
//     int n, X;
//     cin >> n >> X;
//     cout << HC(n);
// }

• Subtask 1: 25 / 25
• Subtask 2: 0 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25