c114: 00409 - Excuses, Excuses!

#include <bits/stdc++.h>
#define fastio ios_base::sync_with_stdio(false), cin.tie(nullptr)
using namespace std;

int main(){
    fastio;
    int K, E, mxn, time[20], c = 0;
    string key[20], s[20], temp, s1;
    stringstream ss;
    while(cin >> K >> E){
        mxn = -50;
        memset(time, 0, sizeof(time));
        for(int i = 0; i < K; ++i) cin >> key[i] >> ws;
        for(int i = 0; i < E; ++i){
            getline(cin, s[i]);
            s1 = s[i];
            for(int j = 0; j < s1.length(); ++j){
                if(isalpha(s1[j])){
                    if(isupper(s1[j])){
                        s1[j] = tolower(s1[j]);
                    }
                }
                else {
                    s1[j] = ' ';
                }
            }
            ss << s1;
            while(ss >> temp){
                for(int j = 0; j < K; ++j){
                    if(temp == key[j]){
                        ++time[i];
                        break;
                    }
                }
            }
            mxn = max(time[i], mxn);
            ss.str(""), ss.clear();
        }
        cout << "Excuse Set #" << ++c << "\n";
        for(int i = 0; i < K; ++i){
            if(time[i] == mxn){
                cout << s[i] << "\n";
            }
        }
        cout << "\n";
    }
    return 0;
}