結果
問題 | No.663 セルオートマトンの逆操作 |
ユーザー | ふっぴー |
提出日時 | 2018-03-09 23:20:34 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,851 bytes |
コンパイル時間 | 2,183 ms |
コンパイル使用メモリ | 179,952 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-10-10 19:24:49 |
合計ジャッジ時間 | 2,955 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
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testcase_00 | WA | - |
testcase_01 | WA | - |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
ソースコード
#include "bits/stdc++.h" using namespace std; #define DEBUG(x) cout<<#x<<": "<<x<<endl; #define DEBUG_VEC(v) cout<<#v<<":";for(int i=0;i<v.size();i++) cout<<" "<<v[i]; cout<<endl typedef long long ll; #define vi vector<int> #define vl vector<ll> #define vii vector< vector<int> > #define vll vector< vector<ll> > #define vs vector<string> #define pii pair<int,int> #define pis pair<int,string> #define psi pair<string,int> #define pll pair<ll,ll> #define fi first #define se second #define rep(i,n) for(int i=0;i<(int)(n);i++) #define rep1(i,n) for(int i=1;i<=(int)(n);i++) #define all(c) c.begin(),c.end() const int inf = 1000000001; const ll INF = 2e18; const ll MOD = 1000000007; const ll mod = 1000000009; const double pi = 3.14159265358979323846; #define Sp(p) cout<<setprecision(15)<< fixed<<p<<endl; int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 }; int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 }; ll mod_pow(ll x, ll p, ll M) { ll a = 1; while (p) { if (p % 2) a = a*x%M; x = x*x%M; p /= 2; } return a; } ll mod_inverse(ll a, ll m) { return mod_pow(a, m - 2, m); } int main() { int n; cin >> n; string s; rep(i, n) { char c; cin >> c; s.push_back(c); } int m; vs first; if (s[0] == '0') { m = 3; first.resize(m); first[0] = "000"; first[1] = "100"; first[2] = "111"; } else { m = 5; first.resize(m); first[0] = "001"; first[1] = "010"; first[2] = "011"; first[3] = "101"; first[4] = "110"; } ll res = 0; set<string> st0, st1; st0.insert("100"); st0.insert("000"); st0.insert("111"); st1.insert("001"); st1.insert("010"); st1.insert("011"); st1.insert("101"); st1.insert("110"); DEBUG(s); rep(i, m) { string ans(n, '?'); ans[0] = first[i][1]; ans[1] = first[i][2]; ans[n - 1] = first[i][0]; ll temp = 1; for (int j = 1; j < n - 2; j++) { if (ans[j - 1] == '0' && ans[j] == '0') { ans[j + 1] = s[j]; } else if (ans[j - 1] == '1' && ans[j] == '0') { ans[j + 1] = s[j]; } else if (ans[j - 1] == '1' && ans[j] == '1') { ans[j + 1] = '0' + (1 - (s[j] - '0')); } else if (ans[j - 1] == '0' && ans[j] == '1') { if (s[j] == '0') { temp = 0; break; } else { ans[j + 1] = '2'; temp *= 2; } } else { ans[j + 1] = s[j]; } } ans.push_back(ans[0]); for (int j = n - 2; j <= n - 1; j++) { if (temp == 0) { continue; } if (s[j] == '0') { string a = ans.substr(j - 1, 3); if (st0.count(a)) { continue; } else if (a[0] == '2') { if (a.substr(1, 2) != "00") { if (a.substr(1, 2) == "11") { (temp *= mod_inverse(2, MOD)) %= MOD; ans[j] = '1'; } else { temp = 0; } } } else if (a[1] == '2') { if (a[0] == '0' && a[2] == '1') { temp = 0; } else { a[1] = a[2]; (temp *= mod_inverse(2, mod)) %= MOD; } } else { temp = 0; } } else { string a = ans.substr(j - 1, 3); if (st1.count(a)) { continue; } else if (a[0] == '2') { if (a.substr(1, 2) != "01" && a.substr(1, 2) != "10") { if (a.substr(1, 2) == "11") { (temp *= mod_inverse(2, MOD)) %= MOD; ans[j] = '0'; } else { temp = 0; } } } else if (a[1] == '2') { if (a[0] == '0' && a[2] == '0') { ans[j + 1] = '1'; (temp *= mod_inverse(2, MOD)) %= MOD; } else if (a[0] == '0' && a[2] == '1') { continue; } else if (a[0] == '1' && a[2] == '0') { ans[j + 1] = '1'; (temp *= mod_inverse(2, MOD)) %= MOD; } else if (a[0] == '1' && a[2] == '1') { ans[j + 1] = '0'; (temp *= mod_inverse(2, MOD)) %= MOD; } } else { temp = 0; } } } DEBUG(temp); (res += temp) % MOD; } cout << res << endl; }