Submission #845225

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
845225	2023-09-06T12:41:17 Z	vjudge1	Trener (COCI20_trener)	C++17	110 / 110	303 ms	32252 KB

trener

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define endl "\n"
#define all(aa) aa.begin(), aa.end()
const int mod=1e9+7;

int main(){
	int n, k;
	cin>>n>>k;


	int ans;
	map<string, ll> dp, cnt;
	for(int j=0; j<k; j++){
		string s;
		cin>>s;
		dp[s]=1;
		cnt[s]++;
	}
	for(int i=1; i<n; i++){
		ans=0;
		for(int j=0; j<k; j++){
			string s;
			cin>>s;

			cnt[s]++;
			string a(s.begin(), s.end()-1), b(s.begin()+1, s.end());
			if(a==b) dp[s]=dp[a]*cnt[a]%mod;
			else dp[s]=(dp[a]*cnt[a]%mod+dp[b]*cnt[b]%mod)%mod;
			ans=(ans+dp[s])%mod;
		}
	}
	cout<<ans<<endl;

}

Compilation message

trener.cpp: In function 'int main()':
trener.cpp:5:14: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
    5 | #define endl "\n"
      |              ^~~~
trener.cpp:14:6: note: 'ans' was declared here
   14 |  int ans;
      |      ^~~

Subtask #1

22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct

Subtask #2

33.0 / 33.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	2420 KB	Output is correct
2	Correct	16 ms	2396 KB	Output is correct
3	Correct	13 ms	2400 KB	Output is correct
4	Correct	4 ms	348 KB	Output is correct
5	Correct	11 ms	1884 KB	Output is correct
6	Correct	11 ms	1800 KB	Output is correct
7	Correct	4 ms	348 KB	Output is correct

Subtask #3

55.0 / 55.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	13 ms	2420 KB	Output is correct
6	Correct	16 ms	2396 KB	Output is correct
7	Correct	13 ms	2400 KB	Output is correct
8	Correct	4 ms	348 KB	Output is correct
9	Correct	11 ms	1884 KB	Output is correct
10	Correct	11 ms	1800 KB	Output is correct
11	Correct	4 ms	348 KB	Output is correct
12	Correct	282 ms	32252 KB	Output is correct
13	Correct	293 ms	32040 KB	Output is correct
14	Correct	276 ms	32192 KB	Output is correct
15	Correct	303 ms	32080 KB	Output is correct
16	Correct	51 ms	344 KB	Output is correct
17	Correct	224 ms	21588 KB	Output is correct
18	Correct	247 ms	21844 KB	Output is correct
19	Correct	244 ms	21584 KB	Output is correct
20	Correct	229 ms	21588 KB	Output is correct
21	Correct	236 ms	21588 KB	Output is correct
22	Correct	55 ms	436 KB	Output is correct