結果
| 問題 |
No.122 傾向と対策:門松列(その3)
|
| コンテスト | |
| ユーザー |
koyumeishi
|
| 提出日時 | 2016-04-04 23:31:43 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 19 ms / 5,000 ms |
| コード長 | 3,605 bytes |
| コンパイル時間 | 1,151 ms |
| コンパイル使用メモリ | 117,768 KB |
| 実行使用メモリ | 7,680 KB |
| 最終ジャッジ日時 | 2024-10-10 23:53:53 |
| 合計ジャッジ時間 | 1,846 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 8 |
ソースコード
#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <functional>
#include <set>
#include <ctime>
#include <random>
#include <chrono>
#include <cassert>
using namespace std;
namespace my_io{
template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;}
template<class T> istream& operator , (istream& is, T& val){ return is >> val;}
template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(int i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;}
template<class T> ostream& operator , (ostream& os, const T& val){ return os << " " << val;}
template<class T> ostream& operator >> (ostream& os, const T& val){ return os << " " << val;}
template<class H> void println(const H& head){ cout << head << endl; }
template<class H, class ... T> void println(const H& head, const T& ... tail){ cout << head << " "; println(tail...); }
}
using namespace my_io;
const long long MOD = 1000000007;
int main(){
vector<vector<int>> v(7, vector<int>(2));
cin >> v;
int low = 1;
int high = 20000;
vector<int> A = {0,2,4,6};
vector<int> B = {1,3,5};
long long ans = 0;
{//A < B
vector<vector<long long>> dp_A(1<<4, vector<long long>(20005,0));
vector<vector<char>> dp_A_ok(1<<4, vector<char>(20005,0));
vector<vector<long long>> dp_B(1<<3, vector<long long>(20005,0));
vector<vector<char>> dp_B_ok(1<<3, vector<char>(20005,0));
for(int a=low; a<=high; a++){
for(int k=0; k<(1<<4)-1; k++){
dp_A[k][a] += dp_A[k][a-1];
dp_A[k][a] %= MOD;
for(int x=0; x<4; x++){
if((k>>x)&1) continue;
if(a < v[A[x]][0] || v[A[x]][1] < a) continue;
dp_A[k|(1<<x)][a] += dp_A[k][a-1] + (k==0?1:0);
dp_A[k|(1<<x)][a] %= MOD;
dp_A_ok[k|(1<<x)][a] = 1;
}
}
}
for(int a=high; a>=low; a--){
for(int k=0; k<(1<<3); k++){
dp_B[k][a] += dp_B[k][a+1];
dp_B[k][a] %= MOD;
for(int x=0; x<3; x++){
if((k>>x)&1) continue;
if(a < v[B[x]][0] || v[B[x]][1] < a) continue;
dp_B[k|(1<<x)][a] += dp_B[k][a+1] + (k==0?1:0);
dp_B[k|(1<<x)][a] %= MOD;
dp_B_ok[k|(1<<x)][a] = 1;
}
}
}
for(int a=low; a<=high; a++){
if(dp_A_ok[0b1111][a] == 0) continue;
ans += dp_A[0b1111][a] * dp_B[0b111][a+1] % MOD;
ans %= MOD;
}
}
{//A > B
vector<vector<long long>> dp_A(1<<4, vector<long long>(20005,0));
vector<vector<char>> dp_A_ok(1<<4, vector<char>(20005,0));
vector<vector<long long>> dp_B(1<<3, vector<long long>(20005,0));
vector<vector<char>> dp_B_ok(1<<3, vector<char>(20005,0));
for(int a=high; a>=low; a--){
for(int k=0; k<(1<<4); k++){
dp_A[k][a] += dp_A[k][a+1];
dp_A[k][a] %= MOD;
for(int x=0; x<4; x++){
if((k>>x)&1) continue;
if(a < v[A[x]][0] || v[A[x]][1] < a) continue;
dp_A[k|(1<<x)][a] += dp_A[k][a+1] + (k==0?1:0);
dp_A[k|(1<<x)][a] %= MOD;
dp_A_ok[k|(1<<x)][a] = 1;
}
}
}
for(int a=low; a<=high; a++){
for(int k=0; k<(1<<3)-1; k++){
dp_B[k][a] += dp_B[k][a-1];
dp_B[k][a] %= MOD;
for(int x=0; x<3; x++){
if((k>>x)&1) continue;
if(a < v[B[x]][0] || v[B[x]][1] < a) continue;
dp_B[k|(1<<x)][a] += dp_B[k][a-1] + (k==0?1:0);
dp_B[k|(1<<x)][a] %= MOD;
dp_B_ok[k|(1<<x)][a] = 1;
}
}
}
for(int a=low; a<=high; a++){
if(dp_B_ok[0b111][a] == 0) continue;
ans += dp_B[0b111][a] * dp_A[0b1111][a+1] % MOD;
ans %= MOD;
}
}
println(ans);
return 0;
}
koyumeishi