Submission #96604

#	Time	Username	Problem	Language	Result	Execution time	Memory
96604		tpoppo	Parametriziran (COCI19_parametriziran)	C++14	0 / 110	3077 ms	1528 KiB

Main

#include <bits/stdc++.h>

using namespace std;
const int MAXN = 5e4 + 100;
const int MAXM = 6;

bitset<27*MAXM> v[MAXN];
int n,m;
int rs;
int main() {
    cin.tie(0);
    ios_base::sync_with_stdio(0);
    cin>>n>>m;
    for(int t=0;t<n;t++){
        string s;
        cin>>s;
        for(int i=0;i<m;i++){
            if(s[i] == '?'){
                for(int j=0;j<27;j++){
                    v[t][27*i + j] = 1;
                }
            }else{
                v[t][27*i + s[i] - 'a'] = 1;
            }
        }
    }


    for(int i=0;i<n;i++){
        //cout<<i<<": "<<v[i]<<endl;
        for(int j=i+1;j<n;j++){
            bool f = true;
            bitset<27*MAXM> bt = (v[i]&v[j]);
            int cnt = bt.count();
            for(int i=0;i<m;i++){
                bt>>=27;
                int tmp = bt.count();
                if(tmp == cnt ){
                    f = false;
                    break;
                }
                cnt = tmp;
            }

            rs += f;
        }
    }

    cout<<rs;
    return 0;
}

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