結果
問題 | No.129 お年玉(2) |
ユーザー |
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提出日時 | 2015-01-16 23:46:54 |
言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 4 ms / 5,000 ms |
コード長 | 2,852 bytes |
コンパイル時間 | 733 ms |
コンパイル使用メモリ | 83,244 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-11-27 22:56:42 |
合計ジャッジ時間 | 2,120 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 46 |
ソースコード
#include <string>#include <vector>#include <algorithm>#include <numeric>#include <set>#include <map>#include <queue>#include <iostream>#include <sstream>#include <cstdio>#include <cmath>#include <ctime>#include <cstring>#include <cctype>#include <cassert>#include <limits>#include <functional>#include <complex>#define rep(i,n) for(int (i)=0;(i)<(int)(n);++(i))#define rer(i,l,u) for(int (i)=(int)(l);(i)<=(int)(u);++(i))#define reu(i,l,u) for(int (i)=(int)(l);(i)<(int)(u);++(i))#if defined(_MSC_VER) || __cplusplus > 199711L#define aut(r,v) auto r = (v)#else#define aut(r,v) __typeof(v) r = (v)#endif#define each(it,o) for(aut(it, (o).begin()); it != (o).end(); ++ it)#define all(o) (o).begin(), (o).end()#define pb(x) push_back(x)#define mp(x,y) make_pair((x),(y))#define mset(m,v) memset(m,v,sizeof(m))#define INF 0x3f3f3f3f#define INFL 0x3f3f3f3f3f3f3f3fLLusing namespace std;typedef vector<int> vi; typedef pair<int,int> pii; typedef vector<pair<int,int> > vpii; typedef long long ll;template<typename T, typename U> inline void amin(T &x, U y) { if(y < x) x = y; }template<typename T, typename U> inline void amax(T &x, U y) { if(x < y) x = y; }template<int MOD>struct ModInt {static const int Mod = MOD;unsigned x;ModInt(): x(0) { }ModInt(signed sig) { int sigt = sig % MOD; if(sigt < 0) sigt += MOD; x = sigt; }ModInt(signed long long sig) { int sigt = sig % MOD; if(sigt < 0) sigt += MOD; x = sigt; }int get() const { return (int)x; }ModInt &operator+=(ModInt that) { if((x += that.x) >= MOD) x -= MOD; return *this; }ModInt &operator-=(ModInt that) { if((x += MOD - that.x) >= MOD) x -= MOD; return *this; }ModInt &operator*=(ModInt that) { x = (unsigned long long)x * that.x % MOD; return *this; }ModInt &operator/=(ModInt that) { return *this *= that.inverse(); }ModInt operator+(ModInt that) const { return ModInt(*this) += that; }ModInt operator-(ModInt that) const { return ModInt(*this) -= that; }ModInt operator*(ModInt that) const { return ModInt(*this) *= that; }ModInt inverse() const {long long a = x, b = MOD, u = 1, v = 0;while(b) {long long t = a / b;a -= t * b; std::swap(a, b);u -= t * v; std::swap(u, v);}return ModInt(u);}};typedef ModInt<1000000000> mint;mint factor(int x, int &d2, int &d5) {d2 = 0;while(x % 2 == 0) x /= 2, ++ d2;d5 = 0;while(x % 5 == 0) x /= 5, ++ d5;return mint(x);}int main() {ll N; int M;cin >> N >> M;int rem = (int)(N % (1000 * M) / 1000);// cerr << "rem = " << rem << endl;//C(M, rem)mint x = 1;int p2 = 0, p5 = 0;rer(i, M - rem + 1, M) {int d2, d5;x *= factor(i, d2, d5);p2 += d2, p5 += d5;}rer(i, 1, rem) {int d2, d5;x /= factor(i, d2, d5);p2 -= d2, p5 -= d5;}rep(i, p2) x *= 2;rep(i, p5) x *= 5;printf("%d\n", x.get());return 0;}