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Submission #219383

# Submission time Handle Problem Language Result Execution time Memory
219383 2020-04-05T08:21:39 Z Vimmer Trener (COCI20_trener) C++14
110 / 110
 136 ms 1272 KB 
#include <bits/stdc++.h>

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

#define F first
#define S second
#define sz(x) ll(x.size())
#define pb push_back
#define N 75005
#define M ll(1e9 + 7)


using namespace std;

typedef long double ld;
typedef long long ll;
typedef short int si;




map <string, ll> dpl, dp;

int main()
{
    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n, k;

    cin >> n >> k;

    vector <string> b(k);

    dp.clear(); dpl.clear();

    for (register int i = 0; i < k; i++) {string str; cin >> str; dpl[str]++;}

    for (register int i = 1; i < n; i++)
        {
            for (register int j = 0; j < k; j++)
            {
                string str1, str2;

                cin >> b[j];

                str1 = b[j].substr(0, i);

                str2 = b[j].substr(1);

                ll sm = dpl[str1];


                if (str1 != str2) sm = (sm + dpl[str2]) % M;

                dp[b[j]] += sm;

                dp[b[j]] %= M;
            }

            dpl = dp;

            dp.clear();
        }

    ll ans = 0;

    for (auto it : dpl) ans = (ans + it.S) % M;

    cout << ans << endl;
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 256 KB Output is correct

Subtask #2
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 384 KB Output is correct
2 Correct 10 ms 384 KB Output is correct
3 Correct 11 ms 384 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 11 ms 384 KB Output is correct
6 Correct 10 ms 384 KB Output is correct
7 Correct 6 ms 384 KB Output is correct

Subtask #3
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 10 ms 384 KB Output is correct
6 Correct 10 ms 384 KB Output is correct
7 Correct 11 ms 384 KB Output is correct
8 Correct 6 ms 384 KB Output is correct
9 Correct 11 ms 384 KB Output is correct
10 Correct 10 ms 384 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 121 ms 1272 KB Output is correct
13 Correct 120 ms 1248 KB Output is correct
14 Correct 123 ms 1236 KB Output is correct
15 Correct 122 ms 1272 KB Output is correct
16 Correct 22 ms 512 KB Output is correct
17 Correct 122 ms 1016 KB Output is correct
18 Correct 125 ms 1144 KB Output is correct
19 Correct 121 ms 1148 KB Output is correct
20 Correct 123 ms 1016 KB Output is correct
21 Correct 136 ms 1016 KB Output is correct
22 Correct 24 ms 512 KB Output is correct