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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#408074 | #6698. Flipping Game | cur_nxt | WA | 45ms | 3920kb | C++20 | 1.3kb | 2024-05-09 17:40:01 | 2024-05-09 17:40:02 |
Judging History
answer
#include <bits/stdc++.h>
#define ioclear std::ios::sync_with_stdio(false);std::cin.tie(nullptr);std::cout.tie(nullptr);
#define endl '\n'
#define int long long
using namespace std;
constexpr int mmax = 110;
constexpr int mod = 998'244'353;
int C[mmax][mmax];
int dp[mmax][mmax];
void init(int _n)
{
for(int i = 0; i < _n; i++)
{
C[i][0] = 1;
for(int j = 1; j <= i; j++)
C[i][j] = (C[i - 1][j] + C[i - 1][j - 1]) % mod;
}
}
void solve()
{
int n, k, m;
std::cin >> n >> k >> m;
std::string s, t;
std::cin >> s >> t;
int cnt = 0;
for(int i = 0; i < n; i++)
cnt += (s[i] != t[i]);
for(int i = 0; i <= k; i++)
for(int j = 0; j <= n; j++)
dp[i][j] = 0;
dp[0][cnt] = 1;
auto add = [](auto &x, auto y)
{
x = (x + y) % mod;
};
for(int i = 0; i < k; i++)
for(int j = 0; j <= n; j++)
{
// int cur = n - j;
for(int t = 0; t <= j && t <= m; t++)
{
// j + m - 2t >= 0
if(m - t > n - j)
continue;
add(dp[i + 1][j - t + (m - t)], (dp[i][j] % mod) * (C[j][t] % mod) * (C[n - j][m - t] % mod));
}
}
std::cout << dp[k][0] % mod << endl;
}
signed main()
{
#ifdef ONLINE_JUDGE
ioclear;
#endif
init(105);
int t;
std::cin >> t;
while(t--)
solve();
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3848kb
input:
3 3 2 1 001 100 3 1 2 001 100 3 3 2 001 100
output:
2 1 7
result:
ok 3 number(s): "2 1 7"
Test #2:
score: -100
Wrong Answer
time: 45ms
memory: 3920kb
input:
1000 8 50 2 11111001 01100001 13 4 5 0010011001101 0000001010010 15 58 12 011111110110100 011010000101000 15 30 2 000101100111101 100010100110000 16 99 15 0111011010111101 1000100101011100 7 73 1 0010010 1010111 1 45 1 1 1 15 64 4 111000001000100 111000110011011 13 16 6 0000001101000 0101001010111 5...
output:
0 0 0 0 0 565123576 0 671397628 866048220 0 0 0 934159397 0 0 0 657964873 0 0 0 297620792 518284447 16636231 1 294524820 259008109 0 0 0 0 0 0 990349196 899244686 0 0 497963164 0 49814547 0 0 0 0 0 529815127 411739397 562040211 0 0 0 0 0 0 0 531433326 0 77531359 703399699 0 0 0 1 0 896329183 0 0 0 0...
result:
wrong answer 901st numbers differ - expected: '295081541', found: '-924849851'