結果
| 問題 |
No.38 赤青白ブロック
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-07-04 10:13:19 |
| 言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,353 bytes |
| コンパイル時間 | 12,239 ms |
| コンパイル使用メモリ | 280,092 KB |
| 最終ジャッジ日時 | 2025-01-05 01:05:31 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 25 WA * 2 |
コンパイルメッセージ
main.cpp: In member function '{anonymous}::MaiScanner& {anonymous}::MaiScanner::operator>>(std::string&)':
main.cpp:72:9: warning: no return statement in function returning non-void [-Wreturn-type]
72 | }
| ^
ソースコード
#pragma GCC optimize ("O3")
#pragma GCC target ("avx")
#include "bits/stdc++.h" // define macro "/D__MAI"
using namespace std;
typedef long long int ll;
#define debugv(v) printf("L%d %s => ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;
#define debugm(m) printf("L%d %s is..\n",__LINE__,#m);for(auto v:m){for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) printf("L%d %s is => ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;
#define debugaa(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[x][y]<<" ";}cout<<endl;}
#define debugaar(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;}
#define ALL(v) (v).begin(),(v).end()
#define repeat(l) for(auto cnt=0;cnt<(l);++cnt)
#define iterate(b,e) for(auto cnt=(b);cnt!=(e);++cnt)
#define MD 1000000007ll
#define PI 3.1415926535897932384626433832795
template<typename T1, typename T2>
ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; }
#define TIME chrono::system_clock::now()
#define MILLISEC(t) (chrono::duration_cast<chrono::milliseconds>(t).count())
namespace {
std::chrono::system_clock::time_point ttt;
void tic() { ttt = TIME; }
void toc() { fprintf(stderr, "TIME : %lldms\n", MILLISEC(TIME - ttt)); }
std::chrono::system_clock::time_point tle = TIME;
#ifdef __MAI
void safe_tle(int msec) { assert(MILLISEC(TIME - tle) < msec); }
#else
#define safe_tle(k) ;
#endif
}
#ifdef __MAI
#define getchar_unlocked getchar
#define putchar_unlocked putchar
#endif
#ifdef __VSCC
#define getchar_unlocked _getchar_nolock
#define putchar_unlocked _putchar_nolock
#endif
namespace {
#define isvisiablechar(c) (0x21<=(c)&&(c)<=0x7E)
class MaiScanner {
public:
template<typename T>
void input_integer(T& var) {
var = 0;
T sign = 1;
int cc = getchar_unlocked();
for (; cc<'0' || '9'<cc; cc = getchar_unlocked())
if (cc == '-') sign = -1;
for (; '0' <= cc&&cc <= '9'; cc = getchar_unlocked())
var = (var << 3) + (var << 1) + cc - '0';
var = var*sign;
}
inline int c() { return getchar_unlocked(); }
inline MaiScanner& operator>>(int& var) {
input_integer<int>(var);
return *this;
}
inline MaiScanner& operator>>(long long& var) {
input_integer<long long>(var);
return *this;
}
inline MaiScanner& operator>>(string& var) {
int cc = getchar_unlocked();
for (; !isvisiablechar(cc); cc = getchar_unlocked());
for (; isvisiablechar(cc); cc = getchar_unlocked())
var.push_back(cc);
}
};
}
MaiScanner scanner;
int rr, bb;
int dfs(const string&);
unordered_map<string, int> memo[32];
int pick(string state,int idx) {
state.erase(idx, 1);
int size = state.size();
if (memo[size].count(state)) return memo[size][state];
return memo[size][state] = dfs(state);
}
int dfs(const string& state) {
int best = -1;
{
int i = 0;
int last_r = -1;
int last_b = -1;
for (; i < state.size() - 1;++i) {
int lookup_r = min(i + rr, (int)state.size() - 1);
int lookup_b = min(i + bb, (int)state.size() - 1);
// Rのforbiddenを解消するために,Bを削除することもできる.
// この解答ではそれを考慮しないため,落ちる.
if (state[i] == 'R' && state[lookup_r] == 'R') {
if (last_r != i) best = max(best, pick(state, i));
best = max(best, pick(state, lookup_r));
last_r = lookup_r;
}
if (state[i] == 'B' && state[lookup_b] == 'B') {
if (last_b != i) best = max(best, pick(state, i));
best = max(best, pick(state, lookup_b));
last_b = lookup_b;
}
}
}
if (best == -1) {
return state.size() - 1;
}
else {
return best;
}
}
int main() {
cin >> rr >> bb;
string str;
cin >> str;
str.push_back('$');
cout << dfs(str) << endl;
return 0;
}