結果
| 問題 |
No.584 赤、緑、青の色塗り
|
| コンテスト | |
| ユーザー |
FF256grhy
|
| 提出日時 | 2017-12-27 22:54:44 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
RE
|
| 実行時間 | - |
| コード長 | 3,774 bytes |
| コンパイル時間 | 2,027 ms |
| コンパイル使用メモリ | 172,640 KB |
| 実行使用メモリ | 6,820 KB |
| 最終ジャッジ日時 | 2024-12-21 08:08:18 |
| 合計ジャッジ時間 | 3,561 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 6 |
| other | AC * 11 RE * 3 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
typedef long long signed int LL;
typedef long long unsigned int LU;
#define incID(i, l, r) for(int i = (l) ; i < (r); i++)
#define incII(i, l, r) for(int i = (l) ; i <= (r); i++)
#define decID(i, l, r) for(int i = (r) - 1; i >= (l); i--)
#define decII(i, l, r) for(int i = (r) ; i >= (l); i--)
#define inc(i, n) incID(i, 0, n)
#define inc1(i, n) incII(i, 1, n)
#define dec(i, n) decID(i, 0, n)
#define dec1(i, n) decII(i, 1, n)
#define inII(v, l, r) ((l) <= (v) && (v) <= (r))
#define inID(v, l, r) ((l) <= (v) && (v) < (r))
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define FI first
#define SE second
#define PQ priority_queue
#define ALL(v) v.begin(), v.end()
#define RALL(v) v.rbegin(), v.rend()
#define FOR(it, v) for(auto it = v.begin(); it != v.end(); ++it)
#define RFOR(it, v) for(auto it = v.rbegin(); it != v.rend(); ++it)
template<typename T> bool setmin(T & a, T b) { if(b < a) { a = b; return true; } else { return false; } }
template<typename T> bool setmax(T & a, T b) { if(b > a) { a = b; return true; } else { return false; } }
template<typename T> bool setmineq(T & a, T b) { if(b <= a) { a = b; return true; } else { return false; } }
template<typename T> bool setmaxeq(T & a, T b) { if(b >= a) { a = b; return true; } else { return false; } }
template<typename T> T gcd(T a, T b) { return (b == 0 ? a : gcd(b, a % b)); }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
// ---- ----
LL MOD;
LL mod(LL x, LL m = MOD) { return (x % m + m) % m; }
pair<LL, LL> ex_gcd(LL a, LL b) {
if(b == 0) { return MP(1, 0); }
auto p = ex_gcd(b, a % b);
return MP(p.SE, p.FI - (a / b) * p.SE);
}
LL inv(LL x, LL m = MOD) {
assert(gcd(x, m) == 1);
auto p = ex_gcd(x, m);
return mod(p.FI, m);
}
LL promod(LL x, LL y, LL m = MOD) { return mod((x % m) * (y % m), m); }
LL divmod(LL x, LL y, LL m = MOD) { return promod(x, inv(y, m), m); }
// ----
struct CombMod {
LL lim = 0, mod;
LL * fact; // fact[i]: i の階乗
LL * finv; // finv[i]: i の階乗の逆元
CombMod() { }
CombMod(LL lim, LL mod = MOD) { init(lim, mod); }
void init(LL arg_lim, LL arg_mod = MOD) {
lim = arg_lim;
mod = arg_mod;
fact = new LL[lim + 1];
finv = new LL[lim + 1];
fact[0] = 1;
inc1(i, lim) { fact[i] = promod(fact[i - 1], i, mod); }
finv[lim] = inv(fact[lim], mod);
dec(i, lim) { finv[i] = promod(finv[i + 1], i + 1, mod); }
}
LL P(LL a, LL b) {
assert(inII(a, 0, lim) && inII(b, 0, lim));
return (a < b ? 0 : promod(fact[a], finv[a - b], mod));
}
LL C(LL a, LL b) {
assert(inII(a, 0, lim) && inII(b, 0, lim));
return (a < b ? 0 : promod(P(a, b), finv[b], mod));
}
LL H(LL a, LL b) {
assert(inII(a, 0, lim) && inII(b, 0, lim) && inII(a + b - 1, -1, lim));
return (a == 0 ? (b == 0) : C(a + b - 1, b));
}
};
// ----
LL ex(LL x, LL y, LL MOD = MOD) {
LL z[64];
z[0] = x;
incID(i, 1, 64) {
z[i] = z[i - 1] * z[i - 1] % MOD;
}
LL v = 1;
inc(i, 64) {
if((y >> i) & 1) { (v *= z[i]) %= MOD; }
}
return v;
}
// ----
LL n, r, g, b;
int main() {
cin >> n >> r >> g >> b;
n++;
MOD = 1e9 + 7;
CombMod cm(3001);
LL ans = 0;
incII(y, 0, 1000) {
int x = (r + g + b) - 2 * y;
int z = n - (2 * x + 3 * y);
if(x < 0 || z < 0) { continue; }
LL d = cm.fact[x + y + z];
d = promod(d, cm.finv[x]);
d = promod(d, cm.finv[y]);
d = promod(d, cm.finv[z]);
incII(xr, 0, r) {
int yr = r - xr;
int xgb = x - xr;
int ygb = y - yr;
if(x < xr || y < yr) { continue; }
LL c = d;
c = promod(c, cm.C(x, xr));
c = promod(c, cm.C(y, yr));
c = promod(c, ex(2, y));
c = promod(c, cm.C(xgb + yr, g - ygb));
(ans += c) %= MOD;
}
}
cout << ans << endl;
return 0;
}
FF256grhy