結果

問題 No.1043 直列大学
ユーザー bond_cmprog
提出日時 2020-05-01 23:08:27
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 32 ms / 2,000 ms
コード長 3,979 bytes
コンパイル時間 2,367 ms
コンパイル使用メモリ 197,892 KB
最終ジャッジ日時 2025-01-10 05:28:37
ジャッジサーバーID
(参考情報)
judge1 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 28
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0;i < n;i++)
#define ll long long
using namespace std;
//typedef vector<unsigned int>vec;
//typedef vector<ll>vec;
//typedef vector<vec> mat;
typedef pair<int, int> P;
typedef pair<ll,ll> LP;
const int dx[8] = {1, 0, -1, 0, 1, -1, -1, 1};
const int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
const int INF = 1000000000;
const ll LINF = 1000000000000000000;//1e18
const ll MOD = 1000000007;
const double PI = acos(-1.0);
const double EPS = 1e-10;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
//template<class T> inline void add(T &a, T b){a = ((a+b) % MOD + MOD) % MOD;};
template<int MOD> struct Fp {
long long val;
constexpr Fp(long long v = 0) noexcept : val(v % MOD) {
if (val < 0) val += MOD;
}
constexpr int getmod() { return MOD; }
constexpr Fp operator - () const noexcept {
return val ? MOD - val : 0;
}
constexpr Fp operator + (const Fp& r) const noexcept { return Fp(*this) += r; }
constexpr Fp operator - (const Fp& r) const noexcept { return Fp(*this) -= r; }
constexpr Fp operator * (const Fp& r) const noexcept { return Fp(*this) *= r; }
constexpr Fp operator / (const Fp& r) const noexcept { return Fp(*this) /= r; }
constexpr Fp& operator += (const Fp& r) noexcept {
val += r.val;
if (val >= MOD) val -= MOD;
return *this;
}
constexpr Fp& operator -= (const Fp& r) noexcept {
val -= r.val;
if (val < 0) val += MOD;
return *this;
}
constexpr Fp& operator *= (const Fp& r) noexcept {
val = val * r.val % MOD;
return *this;
}
constexpr Fp& operator /= (const Fp& r) noexcept {
long long a = r.val, b = MOD, u = 1, v = 0;
while (b) {
long long t = a / b;
a -= t * b; swap(a, b);
u -= t * v; swap(u, v);
}
val = val * u % MOD;
if (val < 0) val += MOD;
return *this;
}
constexpr bool operator == (const Fp& r) const noexcept {
return this->val == r.val;
}
constexpr bool operator != (const Fp& r) const noexcept {
return this->val != r.val;
}
friend constexpr ostream& operator << (ostream &os, const Fp<MOD>& x) noexcept {
return os << x.val;
}
friend constexpr Fp<MOD> modpow(const Fp<MOD> &a, long long n) noexcept {
if (n == 0) return 1;
auto t = modpow(a, n / 2);
t = t * t;
if (n & 1) t = t * a;
return t;
}
};
using mint = Fp<MOD>;
void solve(){
int N, M;
cin >> N >> M;
vector<int> V(N), R(M);
REP(i,N) cin >> V[i];
REP(i,M) cin >> R[i];
ll A, B;
cin >> A >> B;
vector<mint> dpV(101010);
vector<mint> dpR(101010);
dpV[0] = dpR[0] = 1;
REP(i,N){
for(int j=101010-1;j>=0;j--){
if(j - V[i] < 0) continue;
if(dpV[j-V[i]] == 0) continue;
dpV[j] += dpV[j-V[i]];
}
}
REP(i,M){
for(int j=101010-1;j>=0;j--){
if(j - R[i] < 0) continue;
if(dpR[j-R[i]] == 0) continue;
dpR[j] += dpR[j-R[i]];
}
}
vector<mint> cumV(101010);//, cumR(101010);
for(int i=1;i<101010;i++){
cumV[i] += cumV[i-1] + dpV[i];
//cumR[i] += cumR[i-1];
}
mint ans = 0;
for(ll r=1;r<101010;r++){
if(dpR[r] == 0) continue;
ll lt = r * A;
ll ut = r * B;
// cout << lt << " " << ut << endl;
if(lt >= 101010) lt = 101010 - 1;
if(ut >= 101010) ut = 101010 - 1;
ans += mint(dpR[r]) * (cumV[ut] - cumV[lt-1]);
// cout << cumV[ut] << " " << cumV[lt] << endl;
}
cout << ans << endl;
}
int main(){
cin.tie(0);
ios::sync_with_stdio(false);
solve();
// int T; cin >> T; REP(t,T) solve();
}
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