oj.uz

Submission #223306

# Submission time Handle Problem Language Result Execution time Memory
223306 2020-04-15T07:01:51 Z dantoh000 Trener (COCI20_trener) C++14
110 / 110
 254 ms 16120 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int mod = 1000000007;
int n,k;
map<string,int> ct[55];
string a[55][1505];
int main(){
    scanf("%d%d",&n,&k);
    for (int i = 1; i <= n; i++){
        for (int j = 1; j <= k; j++){
            cin >> a[i][j];
        }
    }
    ll ans = 0;
    ct[0][""]++;
    for (int i = 1; i <= n; i++){
        for (int j = 1; j <= k; j++){
            string X = a[i][j].substr(1,a[i][j].size()-1);
            string Y = a[i][j].substr(0,a[i][j].size()-1);
            //cout << a[i][j] << " " << X << " " << Y;
            int res = 0;
            if (ct[i-1].find(X) != ct[i-1].end()) res += ct[i-1][X];
            if (X != Y && ct[i-1].find(Y) != ct[i-1].end()) res += ct[i-1][Y];
            res %= mod;
            //printf("%d %d\n",ct[X],ct[Y]);
            ct[i][a[i][j]] += res; ct[i][a[i][j]] %= mod;
        }
    }
    for (auto x : ct[n]){
        ans += x.second;
    }
    printf("%lld",ans%mod);
}

Compilation message

trener.cpp: In function 'int main()':
trener.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&k);
     ~~~~~^~~~~~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2944 KB Output is correct
2 Correct 6 ms 2944 KB Output is correct
3 Correct 6 ms 2944 KB Output is correct
4 Correct 6 ms 2944 KB Output is correct

Subtask #2
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 3712 KB Output is correct
2 Correct 19 ms 3712 KB Output is correct
3 Correct 19 ms 3712 KB Output is correct
4 Correct 14 ms 3200 KB Output is correct
5 Correct 20 ms 3584 KB Output is correct
6 Correct 23 ms 3712 KB Output is correct
7 Correct 15 ms 3328 KB Output is correct

Subtask #3
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2944 KB Output is correct
2 Correct 6 ms 2944 KB Output is correct
3 Correct 6 ms 2944 KB Output is correct
4 Correct 6 ms 2944 KB Output is correct
5 Correct 23 ms 3712 KB Output is correct
6 Correct 19 ms 3712 KB Output is correct
7 Correct 19 ms 3712 KB Output is correct
8 Correct 14 ms 3200 KB Output is correct
9 Correct 20 ms 3584 KB Output is correct
10 Correct 23 ms 3712 KB Output is correct
11 Correct 15 ms 3328 KB Output is correct
12 Correct 222 ms 15096 KB Output is correct
13 Correct 236 ms 16088 KB Output is correct
14 Correct 217 ms 16120 KB Output is correct
15 Correct 227 ms 16120 KB Output is correct
16 Correct 133 ms 8056 KB Output is correct
17 Correct 254 ms 14072 KB Output is correct
18 Correct 239 ms 13816 KB Output is correct
19 Correct 243 ms 13948 KB Output is correct
20 Correct 239 ms 13816 KB Output is correct
21 Correct 246 ms 13888 KB Output is correct
22 Correct 134 ms 7800 KB Output is correct