Task: | Kortit II |
Sender: | AH |
Submission time: | 2024-10-31 10:32:40 +0200 |
Language: | C++ (C++20) |
Status: | READY |
Result: | 34 |
group | verdict | score |
---|---|---|
#1 | ACCEPTED | 3 |
#2 | ACCEPTED | 5 |
#3 | ACCEPTED | 26 |
#4 | WRONG ANSWER | 0 |
#5 | WRONG ANSWER | 0 |
test | verdict | time | group | |
---|---|---|---|---|
#1 | ACCEPTED | 0.00 s | 1, 2, 3, 4, 5 | details |
#2 | ACCEPTED | 0.00 s | 2, 3, 4, 5 | details |
#3 | ACCEPTED | 0.01 s | 3, 4, 5 | details |
#4 | WRONG ANSWER | 0.03 s | 4, 5 | details |
#5 | TIME LIMIT EXCEEDED | -- | 5 | details |
#6 | TIME LIMIT EXCEEDED | -- | 5 | details |
Code
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef vector<int> vi; #define F first #define S second #define PB push_back #define MP make_pair #define FOR(i,a,b) for (ll i = a; i < b; i++) ll mod=1e9+7; ll fac(ll n) { ll f=1; FOR(i,1,n+1) { f = (f*i)%mod; } return f; } ll bin(ll n, ll k) { if (k > n) return 0; if (k==0) { return 1; } ll c = n; for (ll i = 1; i < k; i++) { c *= n - i; c /= i + 1; } return c; } vector<vector<ll>> im(ll n, ll r) { return vector<vector<ll>>(n + 1, vector<ll>(r + 1, -1)); } ll h(ll n, ll r, vector<vector<ll>> &m) { if (n == 0 && r == 0) { return 1; } if (n < 0 || r < 0) { return 0; } if (r > n) { return 0; } if (m[n][r] != -1) { return m[n][r]; } m[n][r] = (r%mod * h(n - 1, r, m)%mod + (n - r)%mod * h(n - 1, r - 1, m)%mod + (n - 1)%mod * h(n - 2, r - 1, m)%mod)%mod; return m[n][r]%mod; } void f() { ll n, a, b, t, tm, jm, vm, r; cin >> n >> a >> b; t = n-a-b; if (t<0) { cout << 0 << "\n"; return; } tm = bin(n, t); jm = fac(n); vector<vector<ll>> m = im(n-t, a); vm = h(n-t, a, m); r=((tm%mod*jm%mod)%mod*vm%mod)%(mod); cout << r << "\n"; } int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); int t; cin >> t; FOR(i,0,t) { f(); } }
Test details
Test 1
Group: 1, 2, 3, 4, 5
Verdict: ACCEPTED
input |
---|
54 4 4 0 3 1 3 3 2 2 4 0 4 ... |
correct output |
---|
0 0 0 0 0 ... |
user output |
---|
0 0 0 0 0 ... |
Test 2
Group: 2, 3, 4, 5
Verdict: ACCEPTED
input |
---|
284 6 1 0 5 0 2 7 1 5 7 7 5 ... |
correct output |
---|
0 0 35280 0 36720 ... |
user output |
---|
0 0 35280 0 36720 ... |
Test 3
Group: 3, 4, 5
Verdict: ACCEPTED
input |
---|
841 19 3 12 19 19 13 19 7 13 20 11 15 ... |
correct output |
---|
40291066 0 0 0 0 ... |
user output |
---|
40291066 0 0 0 0 ... |
Test 4
Group: 4, 5
Verdict: WRONG ANSWER
input |
---|
1000 15 12 6 7 1 6 44 4 26 6 6 5 ... |
correct output |
---|
0 5040 494558320 0 340694548 ... |
user output |
---|
0 5040 494558320 0 340694548 ... |
Test 5
Group: 5
Verdict: TIME LIMIT EXCEEDED
input |
---|
1000 892 638 599 966 429 655 1353 576 1140 1403 381 910 ... |
correct output |
---|
0 0 0 249098285 0 ... |
user output |
---|
(empty) |
Test 6
Group: 5
Verdict: TIME LIMIT EXCEEDED
input |
---|
1000 2000 1107 508 2000 1372 249 2000 588 65 2000 1739 78 ... |
correct output |
---|
750840601 678722180 744501884 159164549 868115056 ... |
user output |
---|
(empty) |