Task: | Merkkijonot |
Sender: | Mahtimursu |
Submission time: | 2023-01-21 13:50:00 +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 | 0.01 s | 1, 2, 3 | details |
#5 | ACCEPTED | 0.00 s | 2, 3 | details |
#6 | ACCEPTED | 0.00 s | 2, 3 | details |
#7 | ACCEPTED | 0.00 s | 2, 3 | details |
#8 | ACCEPTED | 0.01 s | 2, 3 | details |
#9 | ACCEPTED | 0.00 s | 3 | details |
#10 | ACCEPTED | 0.11 s | 3 | details |
#11 | ACCEPTED | 0.28 s | 3 | details |
#12 | ACCEPTED | 0.04 s | 3 | details |
#13 | ACCEPTED | 0.00 s | 3 | details |
#14 | ACCEPTED | 0.00 s | 3 | details |
#15 | ACCEPTED | 0.01 s | 2, 3 | details |
#16 | ACCEPTED | 0.08 s | 3 | details |
Code
#include <bits/stdc++.h>using namespace std;using ll = long long;const ll M = 1e9 + 7;const int of = 250;vector<pair<int, int>> v;map<pair<int, pair<pair<int, int>, pair<int, int>>>, bool> vis;map<pair<int, pair<pair<int, int>, pair<int, int>>>, int> dp;int n;int atot = 0;int btot = 0;ll cnt(int i, pair<int, int> x, pair<int, int> y) {if (i == n) {//cout << x.first << " " << x.second << " " << y.first << " " << y.second << endl;return x == y;}if (x.first > atot / 2 || y.first > atot / 2) return 0;if (x.second > btot / 2 || y.second > btot / 2) return 0;if (vis[{i, {x, y}}]) {return dp[{i, {x, y}}];}ll a = 0;a += cnt(i + 1, {x.first + v[i].first, x.second + v[i].second}, y);a += cnt(i + 1, x, {y.first + v[i].first, y.second + v[i].second});a = a % M;vis[{i, {x, y}}] = 1;dp[{i, {x, y}}] = a;return a;}int main() {ios::sync_with_stdio(false);cin.tie(nullptr);cin >> n;for (int i = 0; i < n; ++i) {string s;cin >> s;int a = 0;int b = 0;for (int j = 0; j < (int)s.size(); ++j) {if (s[j] == 'a') a++;else b++;}v.push_back({a, b});atot += a;btot += b;//cout << a << " " << b << endl;}sort(v.rbegin(), v.rend());cout << cnt(0, {0, 0}, {0, 0}) << "\n";return 0;}
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 |