結果
| 問題 | No.226 0-1パズル |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2016-08-18 21:44:18 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 5,000 ms |
| コード長 | 3,809 bytes |
| コンパイル時間 | 1,531 ms |
| コンパイル使用メモリ | 176,296 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-07-26 14:24:07 |
| 合計ジャッジ時間 | 2,205 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 22 |
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 pow(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 = 101;
static char res_[MAX_LEN];
scanf("%s",res_);
return string(res_);
}
int H, W;
vector<string> S;
// i列目まで見た、連続が存在した、前の列の値
mint dp[1001][2][2];
void solve(){
string A(W, '0'), B(W, '0');
rep(i, W){
if(i & 1)A[i] = '1';
else B[i] = '1';
}
mint ans = 1;
rep(y, H){
int okA = 1, okB = 1;
rep(x, W){
if(S[y][x] == '?')continue;
if(S[y][x] != A[x])okA = 0;
if(S[y][x] != B[x])okB = 0;
}
ans *= okA + okB;
}
rep(i, W + 1)rep(j, 2)rep(k, 2)dp[i][j][k] = 0;
if(S[0][0] == '?')dp[1][0][0] = dp[1][0][1] = 1;
else dp[1][0][S[0][0] - '0'] = 1;
FOR(x, 1, W){
vi curs;
if(S[0][x] != '1')curs.push_back(0);
if(S[0][x] != '0')curs.push_back(1);
rep(suc, 2){
rep(pre, 2){
each(cur, curs){
int hoge = pre, piyo = cur;
bool ok = true;
rep(y, H){
ok &= S[y][x - 1] == '?' || S[y][x - 1] - '0' == hoge;
ok &= S[y][x] == '?' || S[y][x] - '0' == piyo;
if(!ok)break;
hoge = 1 - hoge;
piyo = 1 - piyo;
}
if(ok)dp[x + 1][suc | (pre == cur)][cur] += dp[x][suc][pre];
}
}
}
}
ans += dp[W][1][0] + dp[W][1][1];
cout << ans << endl;
}
int main(){
while(cin >> H >> W){
S.resize(H);
rep(i, H)S[i] = nstr();
solve();
}
}