結果
問題 | No.1683 Robot Guidance |
ユーザー | miscalc |
提出日時 | 2021-09-17 22:48:17 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,508 bytes |
コンパイル時間 | 1,939 ms |
コンパイル使用メモリ | 207,544 KB |
実行使用メモリ | 26,676 KB |
最終ジャッジ日時 | 2024-06-29 21:35:31 |
合計ジャッジ時間 | 3,893 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 18 ms
9,728 KB |
testcase_04 | AC | 5 ms
5,376 KB |
testcase_05 | AC | 9 ms
5,760 KB |
testcase_06 | AC | 23 ms
10,880 KB |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | AC | 38 ms
15,208 KB |
testcase_11 | WA | - |
testcase_12 | AC | 49 ms
17,152 KB |
testcase_13 | AC | 29 ms
15,104 KB |
testcase_14 | AC | 63 ms
24,704 KB |
testcase_15 | AC | 35 ms
15,828 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | AC | 29 ms
14,976 KB |
testcase_23 | AC | 29 ms
15,036 KB |
testcase_24 | AC | 73 ms
26,624 KB |
testcase_25 | AC | 31 ms
14,976 KB |
testcase_26 | AC | 59 ms
26,624 KB |
testcase_27 | AC | 58 ms
26,676 KB |
testcase_28 | WA | - |
testcase_29 | AC | 35 ms
14,976 KB |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | AC | 25 ms
13,568 KB |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | AC | 21 ms
11,392 KB |
testcase_39 | AC | 29 ms
14,976 KB |
testcase_40 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> #include <atcoder/modint> using namespace std; using namespace atcoder; //using mint = modint998244353; using mint = modint1000000007; using ll = long long; using ld = long double; using pll = pair<ll, ll>; using tlll = tuple<ll, ll, ll>; constexpr ll INF = 1LL << 60; template<class T> bool chmin(T& a, T b) {if (a > b) {a = b; return true;} return false;} template<class T> bool chmax(T& a, T b) {if (a < b) {a = b; return true;} return false;} ll safemod(ll A, ll M) {return (A % M + M) % M;} ll divfloor(ll A, ll B) {if (B < 0) {return divfloor(-A, -B);} return (A - safemod(A, B)) / B;} ll divceil(ll A, ll B) {if (B < 0) {return divceil(-A, -B);} return divfloor(A + B - 1, B);} #define FINALANS(A) do {cout << (A) << '\n'; exit(0);} while (false) class mintcombination { public: vector<mint> fac, finv, inv; mintcombination(ll M) { fac.resize(M + 1); finv.resize(M + 1); inv.resize(M + 1); fac.at(0) = 1, finv.at(0) = 1; fac.at(1) = 1, finv.at(1) = 1, inv.at(1) = 1; for (ll i = 2; i <= M; i++) { fac.at(i) = fac.at(i - 1) * i; inv.at(i) = mint::mod() - inv.at(mint::mod() % i) * (mint::mod() / i); finv.at(i) = finv.at(i - 1) * inv.at(i); } } mint P(ll N, ll K) { if (N < K) return 0; if (N < 0 || K < 0) return 0; return fac.at(N) * finv.at(N - K); } mint C(ll N, ll K) { if (N < K) return 0; if (N < 0 || K < 0) return 0; return fac.at(N) * finv.at(K) * finv.at(N - K); } mint H(ll N, ll K) { return C(N + K - 1, K); } }; int main() { ll A, B, X, Y; cin >> A >> B >> X >> Y; if ((X + Y) % 2 != A % 2) FINALANS(0); ll spR = (B + 1) / 4 + ((B + 1) % 4 >= 1 ? 1 : 0); ll spU = (B + 1) / 4 + ((B + 1) % 4 >= 2 ? 1 : 0); ll spL = (B + 1) / 4 + ((B + 1) % 4 >= 3 ? 1 : 0); ll spD = (B + 1) / 4; //cerr << spR << " " << spU << " " << spL << " " << spD << " " << endl; mintcombination com(A + B + 10); mint ans = 0; for (ll R = 0; R <= A; R++) { ll L = R - X; ll U = (A + X + Y - 2 * R) / 2; ll D = (A + X - Y - 2 * R) / 2; if (L < 0 || U < 0 || D < 0) continue; //cerr << R << " " << U << " " << L << " " << D << " " << endl; mint tmp = 1; if (spR > 0) tmp *= com.C(R + spR - 1, R); if (spU > 0) tmp *= com.C(U + spU - 1, U); if (spL > 0) tmp *= com.C(L + spL - 1, L); if (spD > 0) tmp *= com.C(D + spD - 1, D); ans += tmp; } cout << ans.val() << endl; }