oj.uz

Submission #885208

# Submission time Handle Problem Language Result Execution time Memory
885208 2023-12-09T09:03:26 Z vjudge1 Trener (COCI20_trener) C++17
0 / 110
 5 ms 1624 KB 
#include <bits/stdc++.h>
#define int long long
#define pb push_back
#define endl '\n'
using namespace std;
const int MOD = 1e9 + 7;
const int p = 31;

map<string,int> dp;
void solve(){
    int n,k; cin>>n>>k;
    //i=1;
    for(int i=1;i<=k;i++){
        string s; cin>>s;
        dp[s]=1;
    }
    
    for(int i=2; i<=n-1; i++){
        for(int j=1;j<=k;j++){
            string s,s1,s2; cin>>s;
            s1=s.substr(0, i-1);
            s2=s.substr(1, i-1);
            
            if(s1==s2)
                dp[s]=dp[s1];
            else
                dp[s]=(dp[s1]+dp[s2])%MOD;
        }
    }
    
    //i=n;
    int ans=0;
    for(int j=1;j<=k;j++){
        string s,s1,s2; cin>>s;
        s1=s.substr(0, n-1);
        s2=s.substr(1, n-1);
        
        if(s1==s2)
            ans=(ans+dp[s1])%MOD;
        else
            ans=(ans+dp[s1]+dp[s2])%MOD;
    }
    cout<<ans;
}

int32_t main(){
    cin.tie(0)->sync_with_stdio(false);
    
    solve();
    return 0;
}

Subtask #1
0 / 22.0

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

Subtask #2
0 / 33.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 1624 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 55.0

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