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Submission #499110

# Submission time Handle Problem Language Result Execution time Memory
499110 2021-12-27T08:49:02 Z Kipras Swimming competition (LMIO18_plaukimo_varzybos) C++14
0 / 100
 5 ms 4172 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=max(j, i+1);
        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 l = -1, h = inf;

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

    return h;

}

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 'bool test(int)':
plaukimo_varzybos.cpp:19:12: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized]
   19 |     int i, j;
      |            ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 4172 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 4172 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 4172 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 4172 KB Output isn't correct
2 Halted 0 ms 0 KB -