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Submission #265182

# Submission time Handle Problem Language Result Execution time Memory
265182 2020-08-14T13:41:49 Z Toirov_Sadi Hotter Colder (IOI10_hottercolder) C++17
87 / 100
 750 ms 8244 KB 
#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

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
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 1280 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 1280 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 1280 KB Output is correct

Subtask #4
12.0 / 25.0

# Verdict Execution time Memory Grader output
1 Partially correct 750 ms 8244 KB Output is partially correct - alpha = 0.500000000000