Submission #265182

#	Time	Username	Problem	Language	Result	Execution time	Memory
265182		Toirov_Sadi	Hotter Colder (IOI10_hottercolder)	C++17	87 / 100	750 ms	8244 KiB

hottercolder

#include<bits/stdc++.h>
#include "grader.h"
 
using namespace std;

int rec(int l, int r, int last){
    if(l == r) return l;
    int m = (l + r) >> 1;
    if(m == last && m > l) m --;
    else if(m == last) m ++;

    int x = Guess(m);
    if(x == 0){
        return (m + last) / 2;
    }
    if(x == 1){
        if(m <= last) return rec(l, min((m + last - 1) / 2, r), m);
        else return rec(max(l, (m + last) / 2 + 1), r, m);
    }
    if(x == -1){
        if(m <= last) return rec(max(l, (m + last) / 2 + 1), r, m);
        else return rec(l, min((last + m - 1) / 2, r), m);
    }
}
int HC(int N){
    if(N == 1) return 1;
    Guess(N / 2);
    return rec(1, N, N / 2);
}

Compilation message (stderr)

hottercolder.cpp: In function 'int rec(int, int, int)':
hottercolder.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type]
   24 | }
      | ^

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 12 / 25