結果
問題 | No.291 黒い文字列 |
ユーザー |
|
提出日時 | 2019-08-30 21:14:32 |
言語 | C++11 (gcc 13.3.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 3,030 bytes |
コンパイル時間 | 2,013 ms |
コンパイル使用メモリ | 181,284 KB |
実行使用メモリ | 40,192 KB |
最終ジャッジ日時 | 2024-11-21 21:30:56 |
合計ジャッジ時間 | 14,348 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 24 TLE * 2 |
コンパイルメッセージ
main.cpp: In function ‘int nextInt()’: main.cpp:14:29: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 14 | int nextInt() { int x; scanf("%d", &x); return x;} | ~~~~~^~~~~~~~~~ main.cpp: In function ‘ll nextLong()’: main.cpp:15:28: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 15 | ll nextLong() { ll x; scanf("%lld", &x); return x;} | ~~~~~^~~~~~~~~~~~
ソースコード
#include <bits/stdc++.h> using namespace std; typedef long long ll; #define REP(i,n) for(int i=0,_n=(int)(n);i<_n;++i) #define ALL(v) (v).begin(),(v).end() #define CLR(t,v) memset(t,(v),sizeof(t)) template<class T1,class T2>ostream& operator<<(ostream& os,const pair<T1,T2>&a){return os<<"("<<a.first<<","<<a.second<< ")";} template<class T>void pv(T a,T b){for(T i=a;i!=b;++i)cout<<(*i)<<" ";cout<<endl;} template<class T>void chmin(T&a,const T&b){if(a>b)a=b;} template<class T>void chmax(T&a,const T&b){if(a<b)a=b;} int nextInt() { int x; scanf("%d", &x); return x;} ll nextLong() { ll x; scanf("%lld", &x); return x;} int main2() { string s; cin >> s; int N = s.size(); map<vector<int>, int> dp; dp.insert( make_pair( vector<int>(4), 0) ); // [0,0,0,0] REP(i, N) { if (string("KUROI?").find(s[i]) == string::npos) continue; map<vector<int>, int> ndp; for (auto it = dp.begin(); it != dp.end(); ++it) { const vector<int> state = it->first; const int val = it->second; vector<int> n_state = state; chmax(ndp[n_state], val); if (s[i] == 'K') { n_state[0]++; chmax(ndp[n_state], val); } if (s[i] == 'U') { if (n_state[0] > 0) { n_state[0]--; n_state[1]++; chmax(ndp[n_state], val); } } if (s[i] == 'R') { if (n_state[1] > 0) { n_state[1]--; n_state[2]++; chmax(ndp[n_state], val); } } if (s[i] == 'O') { if (n_state[2] > 0) { n_state[2]--; n_state[3]++; chmax(ndp[n_state], val); } } if (s[i] == 'I') { if (n_state[3] > 0) { n_state[3]--; chmax(ndp[n_state], val + 1); } } if (s[i] == '?') { for (char ch : string("KUROI")) { vector<int> n_state = state; if (ch == 'K') { n_state[0]++; chmax(ndp[n_state], val); } if (ch == 'U') { if (n_state[0] > 0) { n_state[0]--; n_state[1]++; chmax(ndp[n_state], val); } } if (ch == 'R') { if (n_state[1] > 0) { n_state[1]--; n_state[2]++; chmax(ndp[n_state], val); } } if (ch == 'O') { if (n_state[2] > 0) { n_state[2]--; n_state[3]++; chmax(ndp[n_state], val); } } if (ch == 'I') { if (n_state[3] > 0) { n_state[3]--; chmax(ndp[n_state], val + 1); } } } } } dp.swap(ndp); } int ans = 0; for (auto it = dp.begin(); it != dp.end(); ++it) { chmax(ans, it->second); } cout << ans << endl; return 0; } int main() { #ifdef LOCAL for (;!cin.eof();cin>>ws) #endif main2(); return 0; }