Submission #917410

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
917410	2024-01-28T05:45:10 Z	PM1	PIN (CEOI10_pin)	C++17	100 / 100	290 ms	16372 KB

pin

#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int mxn=5e4+5;
int n,d;
string s[mxn];
map<vector<char>,int>mp[(1<<4)];
ll ans[4];
int main(){
	cin>>n>>d;
	for(int i=1;i<=n;i++){
		cin>>s[i];
		for(int j=0;j<(1<<4)-1;j++){
			int cnt=0;
			vector<char>v;
			for(int k=0;k<4;k++){
				if(j&(1<<k)){
					cnt++;
					v.push_back(s[i][k]);
				}
			}
			ans[3-cnt]+=mp[j][v];
			mp[j][v]++;
			//cout<<j<<" "<<mp[j][v]<<endl;
		}//cout<<endl;
	}
	ans[1]-=(ans[0]*3);
	ans[2]-=(ans[1]*2+ans[0]*3);
	ans[3]-=ans[1]+ans[2]+ans[0];
	cout<<ans[d-1]<<'\n';
}

Subtask #1

100.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	2652 KB	Output is correct
2	Correct	7 ms	2660 KB	Output is correct
3	Correct	6 ms	2396 KB	Output is correct
4	Correct	71 ms	3708 KB	Output is correct
5	Correct	88 ms	3924 KB	Output is correct
6	Correct	96 ms	3924 KB	Output is correct
7	Correct	71 ms	3924 KB	Output is correct
8	Correct	97 ms	3904 KB	Output is correct
9	Correct	158 ms	3888 KB	Output is correct
10	Correct	178 ms	4180 KB	Output is correct
11	Correct	95 ms	3924 KB	Output is correct
12	Correct	163 ms	3712 KB	Output is correct
13	Correct	105 ms	3920 KB	Output is correct
14	Correct	99 ms	3716 KB	Output is correct
15	Correct	163 ms	3924 KB	Output is correct
16	Correct	172 ms	13328 KB	Output is correct
17	Correct	287 ms	16192 KB	Output is correct
18	Correct	204 ms	14108 KB	Output is correct
19	Correct	237 ms	15488 KB	Output is correct
20	Correct	290 ms	16372 KB	Output is correct