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Submission #26756

# Submission time Handle Problem Language Result Execution time Memory
26756 2017-07-05T12:04:50 Z baactree Hotter Colder (IOI10_hottercolder) C++14
79 / 100
 813 ms 8288 KB 
#include "grader.h"

int HC(int N){
    int le,ri;
    int st,fi;
    st=1;
    fi=N;
    le=1;
    ri=N;
    int pre=-1000;
    while(true){
        if(le==ri)
            return le;
        int mid=(le+ri)/2;
        int x=2*mid-pre;
        if(x==pre)
            x++;
        if(x>=le&&x<=ri){
            int k=Guess(x);
            if(k==0)
                return (x+pre)/2;
            else if(k>0){
                if(x<pre){
                    ri=(x+pre)/2-((x+pre)%2==0);
                    pre=x;
                }
                else{
                    le=(x+pre)/2+1;
                    pre=x;
                }
            }
            else{
                if(x<pre){
                    le=(x+pre)/2+1;
                    pre=x;
                }
                else{
                    ri=(x+pre)/2-((x+pre)%2==0);
                    pre=x;
                }
            }
        }
        else{
            x=(le*2+ri)/3;
            Guess(x);
            pre=x;
        }
    }
    return 0;
}

Compilation message

hottercolder.cpp: In function 'int HC(int)':
hottercolder.cpp:5:9: warning: variable 'st' set but not used [-Wunused-but-set-variable]
     int st,fi;
         ^~
hottercolder.cpp:5:12: warning: variable 'fi' set but not used [-Wunused-but-set-variable]
     int st,fi;
            ^~

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 29 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
4.0 / 25.0

# Verdict Execution time Memory Grader output
1 Partially correct 813 ms 8288 KB Output is partially correct - alpha = 0.160000000000