Task: | Kortit II |
Sender: | Verlet |
Submission time: | 2024-11-10 23:49:56 +0200 |
Language: | C++ (C++17) |
Status: | READY |
Result: | 100 |
group | verdict | score |
---|---|---|
#1 | ACCEPTED | 3 |
#2 | ACCEPTED | 5 |
#3 | ACCEPTED | 26 |
#4 | ACCEPTED | 28 |
#5 | ACCEPTED | 38 |
test | verdict | time | group | |
---|---|---|---|---|
#1 | ACCEPTED | 0.17 s | 1, 2, 3, 4, 5 | details |
#2 | ACCEPTED | 0.17 s | 2, 3, 4, 5 | details |
#3 | ACCEPTED | 0.17 s | 3, 4, 5 | details |
#4 | ACCEPTED | 0.17 s | 4, 5 | details |
#5 | ACCEPTED | 0.17 s | 5 | details |
#6 | ACCEPTED | 0.17 s | 5 | details |
Code
#include <iostream>using namespace std;typedef long long ll;const ll m = 1000000007;const ll n = 3000;ll t[n][n+1];ll f[n+1];ll p[n+1][n+1];ll madd(ll a, ll b){return ((a % m) + (b % m)) % m;}ll mmul(ll a, ll b){return ((a % m) * (b % m)) % m;}void init(){f[0] = 1;for (ll i = 1; i < n+1; i++){f[i] = mmul(i, f[i-1]);}t[0][0] = 1;for (ll i = 2; i < n+1; i++){t[1][i] = 1;}for (ll i = 3; i < n+1; i++){t[i-1][i] = 1;}for (ll j = 4; j < n+1; j++){for (ll i = 2; i < j-1; i++){//t[i][j] = i * t[i][j-1] + (j-i) * t[i-1][j-1] + (j-1) * t[i-1][j-2];t[i][j] = (mmul(i, t[i][j-1]) + mmul(j-i, t[i-1][j-1]) + mmul(j-1, t[i-1][j-2])) % m;}}p[0][0] = 1; // C(0, 0) = 1for (int i = 1; i < n; i++) {p[i][0] = 1; // C(i, 0) = 1for (int j = 1; j <= i; j++) {p[i][j] = madd(p[i - 1][j - 1], p[i - 1][j]);}}}long long ncr(int n, int r) {return p[n][r];}void print(){for (ll i = 0; i < n+1; i++){cout << f[i] << " ";}cout << endl << endl;for (ll j = 0; j < n+1; j++){for (ll i = 0; i < n; i++){cout << t[i][j] << " ";}cout << endl;}}int main(){init();int tests, n, a, b;cin >> tests;for (int i = 0; i < tests; i++){cin >> n >> a >> b;if (a + b > n){cout << 0 << endl;continue;}int numberOfDraws = n - a - b;if (numberOfDraws < n && (a == n - numberOfDraws || b == n - numberOfDraws)){cout << 0 << endl;continue;}ll c = a + b;ll v = mmul(mmul(t[a][c], ncr(n, n-c)), f[n]);cout << v << endl;}}
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: ACCEPTED
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: ACCEPTED
input |
---|
1000 892 638 599 966 429 655 1353 576 1140 1403 381 910 ... |
correct output |
---|
0 0 0 249098285 0 ... |
user output |
---|
0 0 0 249098285 0 ... |
Test 6
Group: 5
Verdict: ACCEPTED
input |
---|
1000 2000 1107 508 2000 1372 249 2000 588 65 2000 1739 78 ... |
correct output |
---|
750840601 678722180 744501884 159164549 868115056 ... |
user output |
---|
750840601 678722180 744501884 159164549 868115056 ... |