Task: | Merkkijonot |
Sender: | UpHereNorth |
Submission time: | 2023-01-21 14:38:47 +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 | 0.01 s | 2, 3 | details |
#9 | ACCEPTED | 0.01 s | 3 | details |
#10 | ACCEPTED | 0.03 s | 3 | details |
#11 | ACCEPTED | 0.04 s | 3 | details |
#12 | ACCEPTED | 0.21 s | 3 | details |
#13 | ACCEPTED | 0.01 s | 3 | details |
#14 | ACCEPTED | 0.00 s | 3 | details |
#15 | ACCEPTED | 0.01 s | 2, 3 | details |
#16 | ACCEPTED | 0.25 s | 3 | details |
Code
#include <bits/stdc++.h>using namespace std;using ll = long long;const ll mod = (ll)1e9 + 7;const int N = 500;ll dp[N+1][251][251];int main(){int n;cin >> n;vector<string> words(n+1);words[0] = "#";int sum =0;for(int i = 1; i <= n; ++i){cin>>words[i];sum += (int)words[i].size();}if(sum%2){cout << "0\n";return 0;}vector<int> cnt(n+1);int tot_cnt = 0;for(int i = 1; i <= n; ++i){for(char c : words[i]){if(c=='a'){cnt[i]++;tot_cnt++;}}}if(tot_cnt%2){cout << "0\n";return 0;}dp[0][0][0] = 1;for(int i = 1; i <= n; ++i){for(int s = 0; s <= sum/2; ++s){for(int a = 0; a <= tot_cnt/2; ++a){dp[i][s][a] = dp[i-1][s][a];if(s-(int)words[i].size() >= 0 && a-cnt[i] >= 0){dp[i][s][a] += dp[i-1][s-(int)words[i].size()][a-cnt[i]];}dp[i][s][a] %= mod;}}}cout << dp[n][sum/2][tot_cnt/2] << "\n";// we want that both// sets have the same number of total characters// and the same number of a's// first solve the problem// of just creating two sets with equal size:// maximum 500 chars in total// meaning that both sides// have max 250 chars// meaning what?// we can go through each number of a's (0 to 250)// go through// dp[i], amount of ways until i// dp[0] = 0// dp[1] =// how was two sets solved?// dp[i][sum][num of a's] tells how many ways there are to create set// of size sum with specific num of a's// dp[0] = 1// dp[1] = 0// dp[2][s][a] = dp[1][s-words[i].size()][a-cnt[i]]}
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 |