721B - Passwords - CodeForces Solution

implementation math sortings strings *1100

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Python Code: 

n, k = map(int, input().split())

pw_list = [len(input()) for _ in range(n)]

pw = len(input())

p = sorted(pw_list)

head = p.index(pw)
tail = n - list(reversed(p)).index(pw) - 1
worst_case = head + ((head)//k)*5 + 1
best_case = tail + (tail//k)*5  + 1

print(worst_case, best_case)

C++ Code: 

#include<bits/stdc++.h>
using namespace std;
#define int long long int
bool comp(string &a,string &b){
    return a.size()<b.size();
}
void h(){
    int n,k;cin>>n>>k;
    vector<string> a(n);string p;
    for(int i=0;i<n;i++) cin>>a[i];
    cin>>p;
    sort(a.begin(),a.end(),comp);
    int ans=0,pre=-1,ct=0,pp=0;
    for(int i=0;i<n;i++) if(p==a[i] || p.size()<a[i].size()) pp++;
    for(int i=0;i<n;i++){
        if(a[i].size()==p.size()){
            if(pre==-1){pre=ans+(5*ct)+1;break;}
        }else{
            ans++;
            if(ans%k==0) ct++;
        }
    }
    cout<<pre<<" ";
    // ans++;
    ans=0;ct=0;
    for(int i=0;i<n-pp;i++){
        ans++;
        if(ans%k==0) ct++;
    }
    cout<<ans+(ct*5)+1<<endl;
}
signed main(){
    // int t;cin>>t;
    // while(t--){
        h();
    // }
}


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