Submission #498913

#	Time	Username	Problem	Language	Result	Execution time	Memory
498913		Kipras	Swimming competition (LMIO18_plaukimo_varzybos)	C++14	0 / 100	1 ms	204 KiB

plaukimo_varzybos

#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];

bool test(int v){
    int i=0, j=0;
    bool pos=true;
    while(j<n&&pos){
        if(i-j==maxi){i=j;/*cout<<i<<" "<<j<<" "<<a[j]-a[i]<<endl;*/}
        if(a[j]-a[i]>v){
            if(j-i<mini)pos=false;
            else {i=j;/*cout<<i<<" "<<j<<" "<<a[j]-a[i]<<endl;*/}
        }else j++;
    }
    if(n-i<mini)pos=false;
    return pos;
}

int solve(){

    int ans=inf;

    int l = 0, h = a[n-1]-a[0];

    while(l<h){
        int mid = l+((h-l)/2);
        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<<test(3);
    cout<<solve();

    return 0;
}

Compilation message (stderr)

plaukimo_varzybos.cpp: In function 'int solve()':
plaukimo_varzybos.cpp:28:9: warning: unused variable 'ans' [-Wunused-variable]
   28 |     int ans=inf;
      |         ^~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40