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Submission #119604

# Submission time Handle Problem Language Result Execution time Memory
119604 2019-06-21T12:47:36 Z PeppaPig Hotter Colder (IOI10_hottercolder) C++14
78 / 100
 728 ms 8184 KB 
#include "grader.h"
#include <bits/stdc++.h>

using namespace std;

int HC(int n){
    Guess(1);
    int l = 1, r = n;
    int last = 0, pre = 1;
    while(l < r) {
        if(r - l < 3) {
            if(last == 0) {
                int now = Guess(r);
                if(now == 0) return l + 1;
                else if(now == 1) return r;
                else return l;
            } else {
                int now = Guess(l);
                if(now == 0) return l + 1;
                else if(now == 1) return l;
                else return r;
            }
        } else {
            if(last == 0) {
                int now = Guess(r);
                if(now == 0) return (pre + r) / 2;
                else if(now == 1) {
                    l = (l + r) / 2 + 1;
                    pre = r, last = 1;
                } else {
                    r = (l + r + 1) / 2 - 1;
                    Guess(pre);
                }
            } else {
                int now = Guess(l);
                if(now == 0) return (pre + l) / 2;
                else if(now == 1) {
                    r = (l + r + 1) / 2 - 1;
                    pre = l, last = 0;
                } else {
                    l = (l + r) / 2 + 1;
                    Guess(pre);
                }
            }
        }
    }
    return l;
}

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 1272 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 1272 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 1272 KB Output is correct

Subtask #4
3.0 / 25.0

# Verdict Execution time Memory Grader output
1 Partially correct 728 ms 8184 KB Output is partially correct - alpha = 0.120000000000