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Submission #219833

# Submission time Handle Problem Language Result Execution time Memory
219833 2020-04-06T13:28:49 Z MKopchev Gap (APIO16_gap) C++14
100 / 100
 82 ms 3412 KB 
#include "gap.h"
#include <bits/stdc++.h>
using namespace std;
const long long nmax=1e5+42,inf=1e18+42;

int n;
long long inp[nmax];
/*
void MinMax(long long low,long long up,long long &a,long long &b)
{
    cout<<low<<" "<<up<<endl;
    cin>>a;
    cin>>b;
}
*/
void ask(long long low,long long up,long long &mini,long long &maxi)
{
    MinMax(low,up,&mini,&maxi);//!
}
long long findGap(int T,int N)
{
    n=N;
    long long mini,maxi;

    ask(0,inf,mini,maxi);

    //cout<<"mini= "<<mini<<" maxi= "<<maxi<<endl;

    if(T==1)
    {
        inp[1]=mini;
        inp[n]=maxi;
        for(int le=2;le<=n+1-le;le++)
        {
            int ri=n+1-le;
            ask(inp[le-1]+1,inp[ri+1]-1,mini,maxi);
            inp[le]=mini;
            inp[ri]=maxi;
        }

        long long ret=0;
        for(int i=2;i<=n;i++)
            ret=max(ret,inp[i]-inp[i-1]);
        return ret;
    }
    //T=2

    if(n==2)return maxi-mini;

    long long low=(maxi-mini)/(n-1);

    vector<long long> noted={mini,maxi};

    for(long long mini_new=mini+1;mini_new<=noted[1];mini_new+=(low+1))
    {
        ask(mini_new,mini_new+low,mini,maxi);
        if(mini!=-1){noted.push_back(mini);noted.push_back(maxi);}
    }

    sort(noted.begin(),noted.end());

    long long ret=0;
    for(int i=1;i<noted.size();i++)
        ret=max(ret,noted[i]-noted[i-1]);

    return ret;
}
/*
int main()
{
    cout<<findGap(2,4)<<endl;
}
*/

Compilation message

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:63:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=1;i<noted.size();i++)
                 ~^~~~~~~~~~~~~

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 344 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 16 ms 768 KB Output is correct
17 Correct 19 ms 764 KB Output is correct
18 Correct 17 ms 768 KB Output is correct
19 Correct 17 ms 768 KB Output is correct
20 Correct 13 ms 768 KB Output is correct
21 Correct 53 ms 1904 KB Output is correct
22 Correct 54 ms 1912 KB Output is correct
23 Correct 64 ms 1912 KB Output is correct
24 Correct 55 ms 1916 KB Output is correct
25 Correct 46 ms 1784 KB Output is correct
26 Correct 54 ms 1912 KB Output is correct
27 Correct 59 ms 1992 KB Output is correct
28 Correct 54 ms 1912 KB Output is correct
29 Correct 55 ms 1912 KB Output is correct
30 Correct 46 ms 2040 KB Output is correct
31 Correct 4 ms 384 KB Output is correct
32 Correct 4 ms 384 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 6 ms 384 KB Output is correct
16 Correct 20 ms 1024 KB Output is correct
17 Correct 23 ms 1024 KB Output is correct
18 Correct 20 ms 1024 KB Output is correct
19 Correct 20 ms 896 KB Output is correct
20 Correct 12 ms 640 KB Output is correct
21 Correct 72 ms 2276 KB Output is correct
22 Correct 70 ms 2268 KB Output is correct
23 Correct 71 ms 2288 KB Output is correct
24 Correct 72 ms 2288 KB Output is correct
25 Correct 74 ms 3412 KB Output is correct
26 Correct 74 ms 2288 KB Output is correct
27 Correct 82 ms 2288 KB Output is correct
28 Correct 71 ms 2364 KB Output is correct
29 Correct 78 ms 2292 KB Output is correct
30 Correct 38 ms 1528 KB Output is correct
31 Correct 4 ms 384 KB Output is correct
32 Correct 4 ms 384 KB Output is correct