結果
| 問題 | No.260 世界のなんとか3 |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2016-07-25 18:32:49 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 43 ms / 2,000 ms |
| コード長 | 3,240 bytes |
| 記録 | |
| コンパイル時間 | 1,664 ms |
| コンパイル使用メモリ | 170,484 KB |
| 実行使用メモリ | 7,552 KB |
| 最終ジャッジ日時 | 2024-11-07 18:12:28 |
| 合計ジャッジ時間 | 3,193 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 27 |
ソースコード
#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;
template<int MOD>
class ModInt{
public:
ModInt():value(0){}
ModInt(long long val):value((int)(val<0?MOD+val%MOD:val%MOD)){ }
ModInt& operator+=(ModInt that){
value = value+that.value;
if(value>=MOD)value-=MOD;
return *this;
}
ModInt& operator-=(ModInt that){
value -= that.value;
if(value<0)value+=MOD;
return *this;
}
ModInt& operator*=(ModInt that){
value = (int)((long long)value * that.value % 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 operator/(ModInt that) const {
return ModInt(*this) /= that;
}
ModInt operator^(long long k) const{
if(value == 0)return 0;
ModInt n = *this, res = 1;
while(k){
if(k & 1)res *= n;
n *= n;
k >>= 1;
}
return res;
}
ModInt inverse() const {
long long a = value, 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);
}
return ModInt(u);
}
int toi() const{ return value; }
private:
int value;
};
typedef ModInt<1000000007> mint;
ostream& operator<<(ostream& os, const mint& x){
os << x.toi();
return os;
}
string nstr(){
static const int MAX_LEN = 100001;
static char res_[MAX_LEN];
scanf("%s",res_);
return string(res_);
}
mint dp[10010][24][2][2];
string A, B;
mint f(string s){
rep(i, sz(s) + 1)rep(j, 24)rep(k, 2)rep(l, 2)dp[i][j][k][l] = 0;
dp[0][0][0][0] = 1;
rep(i, sz(s))rep(md24, 24)rep(d3, 2)rep(les, 2){
mint val = dp[i][md24][d3][les];
if(val.toi() == 0)continue;
rep(d, 10){
int nMd24 = (md24 * 10 + d)%24, nD3 = d3|(d==3), nLes = les|(d<s[i]);
if(!les && d > s[i])break;
dp[i + 1][nMd24][nD3][nLes] += val;
}
}
mint res = 0;
rep(md24, 24)rep(d3, 2)rep(les, 2){
mint val = dp[sz(s)][md24][d3][les];
if((d3 || md24 % 3 == 0) && md24 % 8)res += val;
}
return res;
}
int main(){
A = nstr();
B = nstr();
each(a, A)a -= '0';
each(b, B)b -= '0';
for(int i = sz(A) - 1; i >= 0; i--){
if(A[i] == 0)A[i] = 9;
else{
A[i]--;
break;
}
}
mint ans = f(B);
ans -= f(A);
cout << ans << endl;
}