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Submission #119611

# Submission time Handle Problem Language Result Execution time Memory
119611 2019-06-21T12:51:32 Z Plurm Hotter Colder (IOI10_hottercolder) C++11
77 / 100
 780 ms 8304 KB 
#include "grader.h"
#include <cstdio>
int HC(int N){
    int lo = 1;
    int hi = N;
    while(hi - lo > 10){
        Guess(lo);
        int r = Guess(hi);
        if(r > 0){
            lo = (lo + hi)/2 + 1;
        }else if(r == 0){
            return (lo + hi)/2;
        }else{
            hi = (lo + hi - 1)/2;
        }
    }
    int last = -1;
    for(int i = lo; i <= hi; i += 2){
        int cur = Guess(i);
        if(last == -1){
            last = cur;
            continue;
        }
        if(cur == -1) return i-2;
        if(cur == 0) return i-1;
        last = cur;
    }
    if((hi - lo) % 2 == 1){
        int cur = Guess(hi);
        if(cur == 1) return hi;
        else return hi-1;
    }
    return hi;
}

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 1272 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 1272 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 1272 KB Output is correct

Subtask #4
2.0 / 25.0

# Verdict Execution time Memory Grader output
1 Partially correct 780 ms 8304 KB Output is partially correct - alpha = 0.068965517241