oj.uz

Submission #845224

# Submission time Handle Problem Language Result Execution time Memory
845224 2023-09-06T12:40:34 Z vjudge1 Trener (COCI20_trener) C++17
22 / 110
 13 ms 2532 KB 
#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, int> 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];
			else dp[s]=(dp[a]*cnt[a]+dp[b]*cnt[b])%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 1 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
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 2432 KB Output is correct
2 Correct 13 ms 2532 KB Output is correct
3 Correct 13 ms 2396 KB Output is correct
4 Incorrect 4 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 2432 KB Output is correct
6 Correct 13 ms 2532 KB Output is correct
7 Correct 13 ms 2396 KB Output is correct
8 Incorrect 4 ms 348 KB Output isn't correct
9 Halted 0 ms 0 KB -