oj.uz

Submission #499096

# Submission time Handle Problem Language Result Execution time Memory
499096 2021-12-27T08:38:01 Z Kipras Swimming competition (LMIO18_plaukimo_varzybos) C++14
20 / 100
 2000 ms 14808 KB 
#include <bits/stdc++.h>

typedef long long ll;
using namespace std;

const int maxN = 1e6+10;
const int inf = 2147000000;

int n, mini, maxi;
int a[maxN];
int dp[maxN];

bool test(int v){

    fill(dp, dp+maxN, 0);

    dp[0]=1;

    int i, j;
    for(i = 0; i < n; i++){
        if(i>1)dp[i]+=dp[i-1];
        if(dp[i]<=0)continue;
        j=i;
        while(j<n&&a[j]-a[i]<=v)j++;

        if(i+mini<=min(i+maxi, j)){
            dp[i+mini]++;
            dp[min(i+maxi, j)+1]--;
        }
    }

    dp[n]+=dp[n-1];
    return dp[n]>0;
}

int solve(){

    int ans=inf;

    int l = 0, h = inf;

    while(l<h){
        int mid = l+((h-l)/2);
        //cout<<l<<" "<<mid<<" "<<h<<" "<<test(mid)<<endl;
        if(test(mid))h=mid;
        else l=mid+1;
    }

    return l;

}

int main()
{

    ios_base::sync_with_stdio(0);cin.tie(nullptr);

    cin>>n>>mini>>maxi;
    for(int i = 0; i < n; i++)cin>>a[i];
    sort(a, a+n);
    cout<<solve();

    return 0;
}

Compilation message

plaukimo_varzybos.cpp: In function 'int solve()':
plaukimo_varzybos.cpp:38:9: warning: unused variable 'ans' [-Wunused-variable]
   38 |     int ans=inf;
      |         ^~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4172 KB Output is correct
2 Correct 1032 ms 5296 KB Output is correct
3 Correct 140 ms 4316 KB Output is correct
4 Execution timed out 2033 ms 14808 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4164 KB Output is correct
2 Correct 5 ms 4160 KB Output is correct
3 Correct 5 ms 4172 KB Output is correct
4 Correct 5 ms 4160 KB Output is correct
5 Correct 5 ms 4228 KB Output is correct
6 Correct 5 ms 4172 KB Output is correct
7 Correct 5 ms 4172 KB Output is correct
8 Correct 5 ms 4156 KB Output is correct
9 Correct 5 ms 4160 KB Output is correct
10 Correct 7 ms 4156 KB Output is correct
11 Correct 4 ms 4172 KB Output is correct
12 Correct 5 ms 4232 KB Output is correct
13 Correct 4 ms 4172 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4172 KB Output is correct
2 Correct 1032 ms 5296 KB Output is correct
3 Correct 140 ms 4316 KB Output is correct
4 Execution timed out 2033 ms 14808 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4172 KB Output is correct
2 Correct 1032 ms 5296 KB Output is correct
3 Correct 140 ms 4316 KB Output is correct
4 Execution timed out 2033 ms 14808 KB Time limit exceeded
5 Halted 0 ms 0 KB -