oj.uz

답안 #659052

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
659052 2022-11-16T08:46:50 Z iloveroseanne Trener (COCI20_trener) C++14
22 / 110
 5 ms 468 KB 
// Author: Ngo Ba Van
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define se second
using ii=pair<ll,ll>;
const ll N=1e3+5,M=1e9+7;
ll n,res,dp[N][N],k;
map<string,int>m[2];
string s;
void nhap()
{
    cin>>n>>k; int a=0,b=1;
    m[0][""]=1;
    for (int i=1;i<=n;i++)
    {
        for (int j=1;j<=k;j++)
        {
            res=0;
            cin>>s; string t1,t2;
            t1=s.substr(0,s.size()-1);
            t2=s.substr(1,s.size()-1);
            if (m[a].count(t1)) res+=m[a][t1];
            if (t1!=t2)
            {
                if (m[a].count(t2)) res+=m[a][t2];
            }
            m[b][s]=(m[b][s]+res)%M;
        }
        swap(a,b);
        m[b].clear();
    }
    res=0;
    for (auto i:m[a])
    res+=i.se;
    cout<<res;
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
#define task "a"
//define task ""
int t=1;
//cin>>t;
while (t--)
nhap();
}

Subtask #1
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 324 KB Output is correct

Subtask #2
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 468 KB Output is correct
2 Correct 4 ms 468 KB Output is correct
3 Correct 5 ms 464 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Incorrect 4 ms 468 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 5 ms 468 KB Output is correct
6 Correct 4 ms 468 KB Output is correct
7 Correct 5 ms 464 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 4 ms 468 KB Output isn't correct
10 Halted 0 ms 0 KB -