結果
問題 | No.672 最長AB列 |
ユーザー | kei |
提出日時 | 2018-04-13 22:45:58 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,061 bytes |
コンパイル時間 | 1,572 ms |
コンパイル使用メモリ | 169,300 KB |
実行使用メモリ | 6,656 KB |
最終ジャッジ日時 | 2024-06-27 16:30:27 |
合計ジャッジ時間 | 2,293 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(要ログイン)
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 |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 6 ms
6,528 KB |
testcase_10 | AC | 5 ms
6,528 KB |
testcase_11 | AC | 5 ms
6,528 KB |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | AC | 6 ms
6,528 KB |
testcase_18 | AC | 5 ms
6,528 KB |
ソースコード
#include "bits/stdc++.h" using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; const int INF = 1e9; const ll LINF = 1e18; template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; } template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; } template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; } template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; } /* <url:> 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ ll solve(){ ll res = 0; string S; cin >> S; vector<ll> cusumA(S.length()+1,0),cusumB(S.length()+1,0); for(int i = 0; i < S.length();i++){ cusumA[i+1] = cusumA[i] + (S[i] == 'A'?1:0); cusumB[i+1] = cusumB[i] + (S[i] == 'A'?0:1); } ll l = 0, r = S.length(); while(r >= l){ ll cntA = cusumA[r] - cusumA[l]; ll cntB = cusumB[r] - cusumB[l]; if(cntA == cntB){ res = max(res,r-l); break;} if(cntA > cntB){ if(S[l] == 'A'){ l++; continue; } if(S[r-1]=='A'){ r--; continue; } ll dl = 0; for(int i = l+1; i < r;i++){ if(S[i] == 'A'){ dl = i - l; break; } } ll dr = 0; for(int i = r-1; i>l;i--){ if(S[i] == 'A'){ dr = r - i; break; } } if(dl < dr) l++; else r--; }else{ if(S[l] == 'B'){ l++; continue; } if(S[r-1]=='B'){ r--; continue; } ll dl = 0; for(int i = l+1; i < r;i++){ if(S[i] == 'B'){ dl = i - l; break; } } ll dr = 0; for(int i = r-1; i>l;i--){ if(S[i] == 'B'){ dr = r - i; break; } } if(dl < dr) l++; else r--; } } return res; } int main(void) { cin.tie(0); ios_base::sync_with_stdio(false); cout << solve() << endl; return 0; }