Task: | Merkkijonot |
Sender: | Anniiiz |
Submission time: | 2023-01-21 13:55:59 +0200 |
Language: | C++ (C++17) |
Status: | READY |
Result: | 100 |
group | verdict | score |
---|---|---|
#1 | ACCEPTED | 15 |
#2 | ACCEPTED | 55 |
#3 | ACCEPTED | 30 |
test | verdict | time | group | |
---|---|---|---|---|
#1 | ACCEPTED | 0.00 s | 1, 2, 3 | details |
#2 | ACCEPTED | 0.00 s | 1, 2, 3 | details |
#3 | ACCEPTED | 0.00 s | 1, 2, 3 | details |
#4 | ACCEPTED | 0.00 s | 1, 2, 3 | details |
#5 | ACCEPTED | 0.00 s | 2, 3 | details |
#6 | ACCEPTED | 0.00 s | 2, 3 | details |
#7 | ACCEPTED | 0.01 s | 2, 3 | details |
#8 | ACCEPTED | 0.02 s | 2, 3 | details |
#9 | ACCEPTED | 0.01 s | 3 | details |
#10 | ACCEPTED | 0.04 s | 3 | details |
#11 | ACCEPTED | 0.09 s | 3 | details |
#12 | ACCEPTED | 0.56 s | 3 | details |
#13 | ACCEPTED | 0.00 s | 3 | details |
#14 | ACCEPTED | 0.00 s | 3 | details |
#15 | ACCEPTED | 0.02 s | 2, 3 | details |
#16 | ACCEPTED | 0.43 s | 3 | details |
Code
#include <iostream>#include <map>#include <vector>#include <cmath>using namespace std;using ll = long long;vector<string> v;ll t[1000][2];ll d[501][501][501][2];ll M = 1000000007;ll haku(ll k, ll a, ll b) {//cout << k << " " << a << " " << b << " " << t[k][0] << " " << t[k][1] << endl;ll s = 0;if (a == 0 && b == 0) return 1;if (a < 0) return 0;if (b < 0) return 0;if (k == -1) return 0;if (d[k][a][b][0]) return d[k][a][b][1];if (a >= t[k][0] && b >= t[k][1]) {s += haku(k-1, a-t[k][0], b - t[k][1]);}s += haku(k-1, a, b);d[k][a][b][1] = s%M;d[k][a][b][0] = 1;return s%M;}int main() {ios::sync_with_stdio(0);cin.tie(0);ll n;string s;ll a = 0;ll b = 0;cin >> n;for (int i = 0; i < n; ++i) {cin >> s;v.push_back(s);for (auto u : s) {if (u == 'a') t[i][0] ++;else t[i][1] ++;}a += t[i][0];b += t[i][1];}if (a %2 != 0) cout << 0 << endl;else if (b%2 != 0) cout << 0 << endl;else {cout << haku(n-1, a/2, b/2)%M << endl;}}
Test details
Test 1
Group: 1, 2, 3
Verdict: ACCEPTED
input |
---|
4 b bbb baabaabaa aab |
correct output |
---|
0 |
user output |
---|
0 |
Test 2
Group: 1, 2, 3
Verdict: ACCEPTED
input |
---|
8 b bb baa a ... |
correct output |
---|
12 |
user output |
---|
12 |
Test 3
Group: 1, 2, 3
Verdict: ACCEPTED
input |
---|
16 a a a b ... |
correct output |
---|
5040 |
user output |
---|
5040 |
Test 4
Group: 1, 2, 3
Verdict: ACCEPTED
input |
---|
16 b b a a ... |
correct output |
---|
0 |
user output |
---|
0 |
Test 5
Group: 2, 3
Verdict: ACCEPTED
input |
---|
5 bab bbaaabbabbbaababbbabbabaaabaaa... |
correct output |
---|
0 |
user output |
---|
0 |
Test 6
Group: 2, 3
Verdict: ACCEPTED
input |
---|
10 baabbbababbbabbaaaabab aabaaabbbab aaaabbabab aab ... |
correct output |
---|
2 |
user output |
---|
2 |
Test 7
Group: 2, 3
Verdict: ACCEPTED
input |
---|
20 aaaab baaab babb b ... |
correct output |
---|
4332 |
user output |
---|
4332 |
Test 8
Group: 2, 3
Verdict: ACCEPTED
input |
---|
100 a b a b ... |
correct output |
---|
433105324 |
user output |
---|
433105324 |
Test 9
Group: 3
Verdict: ACCEPTED
input |
---|
10 aaaabbabbaabbaaaabbbbabaaaabab... |
correct output |
---|
0 |
user output |
---|
0 |
Test 10
Group: 3
Verdict: ACCEPTED
input |
---|
50 aaba aaa abbbbaaba ababbabbabab ... |
correct output |
---|
636733956 |
user output |
---|
636733956 |
Test 11
Group: 3
Verdict: ACCEPTED
input |
---|
100 ba bbbaba bbba bb ... |
correct output |
---|
264657218 |
user output |
---|
264657218 |
Test 12
Group: 3
Verdict: ACCEPTED
input |
---|
500 a b b b ... |
correct output |
---|
394045503 |
user output |
---|
394045503 |
Test 13
Group: 3
Verdict: ACCEPTED
input |
---|
2 bbbababaaaabbbaaaaaaabbabbbaab... |
correct output |
---|
2 |
user output |
---|
2 |
Test 14
Group: 3
Verdict: ACCEPTED
input |
---|
1 bbbaaaabaabbbababbbbbbbbabbbaa... |
correct output |
---|
0 |
user output |
---|
0 |
Test 15
Group: 2, 3
Verdict: ACCEPTED
input |
---|
100 a a a a ... |
correct output |
---|
538992043 |
user output |
---|
538992043 |
Test 16
Group: 3
Verdict: ACCEPTED
input |
---|
500 a a a a ... |
correct output |
---|
515561345 |
user output |
---|
515561345 |