結果
問題 | No.1995 CHIKA Road |
ユーザー | mai |
提出日時 | 2022-07-01 23:20:46 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 183 ms / 2,000 ms |
コード長 | 6,015 bytes |
コンパイル時間 | 2,664 ms |
コンパイル使用メモリ | 231,636 KB |
実行使用メモリ | 23,532 KB |
最終ジャッジ日時 | 2024-05-04 17:51:35 |
合計ジャッジ時間 | 5,696 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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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 |
---|---|---|
testcase_00 | AC | 2 ms
6,812 KB |
testcase_01 | AC | 1 ms
6,944 KB |
testcase_02 | AC | 1 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 7 ms
6,944 KB |
testcase_07 | AC | 26 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,944 KB |
testcase_09 | AC | 2 ms
6,944 KB |
testcase_10 | AC | 26 ms
6,940 KB |
testcase_11 | AC | 183 ms
23,532 KB |
testcase_12 | AC | 81 ms
15,280 KB |
testcase_13 | AC | 43 ms
10,124 KB |
testcase_14 | AC | 45 ms
10,304 KB |
testcase_15 | AC | 140 ms
21,036 KB |
testcase_16 | AC | 12 ms
6,944 KB |
testcase_17 | AC | 61 ms
10,676 KB |
testcase_18 | AC | 108 ms
15,320 KB |
testcase_19 | AC | 112 ms
15,340 KB |
testcase_20 | AC | 52 ms
9,880 KB |
testcase_21 | AC | 48 ms
9,472 KB |
testcase_22 | AC | 103 ms
14,732 KB |
testcase_23 | AC | 29 ms
7,168 KB |
testcase_24 | AC | 85 ms
13,180 KB |
testcase_25 | AC | 15 ms
6,940 KB |
testcase_26 | AC | 32 ms
7,680 KB |
testcase_27 | AC | 90 ms
12,884 KB |
testcase_28 | AC | 50 ms
9,344 KB |
testcase_29 | AC | 103 ms
15,116 KB |
testcase_30 | AC | 14 ms
6,940 KB |
testcase_31 | AC | 6 ms
6,944 KB |
testcase_32 | AC | 19 ms
6,940 KB |
testcase_33 | AC | 81 ms
12,804 KB |
testcase_34 | AC | 8 ms
6,940 KB |
testcase_35 | AC | 29 ms
7,424 KB |
testcase_36 | AC | 37 ms
8,064 KB |
testcase_37 | AC | 96 ms
14,232 KB |
testcase_38 | AC | 65 ms
11,328 KB |
testcase_39 | AC | 7 ms
6,940 KB |
ソースコード
#pragma GCC optimize("O3") #include <bits/stdc++.h> // clang-format off using namespace std; using ll = long long int; #define all(v) (v).begin(),(v).end() #define repeat(cnt,l) for(typename remove_const<typename remove_reference<decltype(l)>::type>::type cnt={};(cnt)<(l);++(cnt)) #define rrepeat(cnt,l) for(auto cnt=(l)-1;0<=(cnt);--(cnt)) #define iterate(cnt,b,e) for(auto cnt=(b);(cnt)!=(e);++(cnt)) #define upto(cnt,b,e,step) for(auto cnt=(b);(cnt)<=(e);(cnt)+=(step)) #define downto(cnt,b,e,step) for(auto cnt=(b);(e)<=(cnt);(cnt)-=(step)) const long long MD = 998244353; const long double PI = 3.1415926535897932384626433832795L; template<typename T1, typename T2> inline ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << '(' << p.first << ':' << p.second << ')'; return o; } template<typename T> inline T& chmax(T& to, const T& val) { return to = max(to, val); } template<typename T> inline T& chmin(T& to, const T& val) { return to = min(to, val); } void bye(string s, int code = 0) { cout << s << endl; exit(code); } mt19937_64 randdev(8901016); template<typename T, typename Random = decltype(randdev), typename enable_if<is_integral<T>::value>::type* = nullptr> inline T rand(T l, T h, Random& rand = randdev) { return uniform_int_distribution<T>(l, h)(rand); } template<typename T, typename Random = decltype(randdev), typename enable_if<is_floating_point<T>::value>::type* = nullptr> inline T rand(T l, T h, Random& rand = randdev) { return uniform_real_distribution<T>(l, h)(rand); }template<typename T> static ostream& operator<<(ostream& o, const std::vector<T>& v) { o << "[ "; for(const auto& e : v) o<<e<<' '; return o << ']'; } template <typename I> struct MyRangeFormat{ I b,e; MyRangeFormat(I _b, I _e):b(_b),e(_e){} }; template<typename I> static ostream& operator<<(ostream& o, const MyRangeFormat<I>& f) { o << "[ "; iterate(i,f.b,f.e) o<<*i<<' '; return o << ']'; } template <typename I> struct MyMatrixFormat{ const I& p; long long n, m; MyMatrixFormat(const I& _p, long long _n, long long _m):p(_p),n(_n),m(_m){} }; template<typename I> static ostream& operator<<(ostream& o, const MyMatrixFormat<I>& f) { o<<'\n'; repeat(i,(f.n)) { repeat(j,f.m) o<<f.p[i][j]<<' '; o<<'\n'; } return o; } struct LOG_t { ~LOG_t() { cout << endl; } }; #define LOG (LOG_t(),cout<<'L'<<__LINE__<<": ") #define FMTA(m,w) (MyRangeFormat<decltype(m+0)>(m,m+w)) #define FMTR(b,e) (MyRangeFormat<decltype(e)>(b,e)) #define FMTV(v) FMTR(v.begin(),v.end()) #define FMTM(m,h,w) (MyMatrixFormat<decltype(m+0)>(m,h,w)) #if defined(_WIN32) || defined(_WIN64) #define getc_x _getc_nolock #define putc_x _putc_nolock #elif defined(__GNUC__) #define getc_x getc_unlocked #define putc_x putc_unlocked #else #define getc_x getc #define putc_x putc #endif class MaiScanner { FILE* fp_; constexpr bool isvisiblechar(char c) noexcept { return (0x21<=(c)&&(c)<=0x7E); } public: inline MaiScanner(FILE* fp):fp_(fp){} template<typename T> void input_integer(T& var) noexcept { var = 0; T sign = 1; int cc = getc_x(fp_); for (; cc < '0' || '9' < cc; cc = getc_x(fp_)) if (cc == '-') sign = -1; for (; '0' <= cc && cc <= '9'; cc = getc_x(fp_)) var = (var << 3) + (var << 1) + cc - '0'; var = var * sign; } inline int c() noexcept { return getc_x(fp_); } template<typename T, typename enable_if<is_integral<T>::value, nullptr_t>::type = nullptr> inline MaiScanner& operator>>(T& var) noexcept { input_integer<T>(var); return *this; } inline MaiScanner& operator>>(string& var) { int cc = getc_x(fp_); for (; !isvisiblechar(cc); cc = getc_x(fp_)); for (; isvisiblechar(cc); cc = getc_x(fp_)) var.push_back(cc); return *this; } template<typename IT> inline void in(IT begin, IT end) { for (auto it = begin; it != end; ++it) *this >> *it; } }; class MaiPrinter { FILE* fp_; public: inline MaiPrinter(FILE* fp):fp_(fp){} template<typename T> void output_integer(T var) noexcept { if (var == 0) { putc_x('0', fp_); return; } if (var < 0) putc_x('-', fp_), var = -var; char stack[32]; int stack_p = 0; while (var) stack[stack_p++] = '0' + (var % 10), var /= 10; while (stack_p) putc_x(stack[--stack_p], fp_); } inline MaiPrinter& operator<<(char c) noexcept { putc_x(c, fp_); return *this; } template<typename T, typename enable_if<is_integral<T>::value, nullptr_t>::type = nullptr> inline MaiPrinter& operator<<(T var) noexcept { output_integer<T>(var); return *this; } inline MaiPrinter& operator<<(const char* str_p) noexcept { while (*str_p) putc_x(*(str_p++), fp_); return *this; } inline MaiPrinter& operator<<(const string& str) { const char* p = str.c_str(); const char* l = p + str.size(); while (p < l) putc_x(*p++, fp_); return *this; } template<typename IT> void join(IT begin, IT end, char sep = ' ') { for (bool b = 0; begin != end; ++begin, b = 1) b ? *this << sep << *begin : *this << *begin; } }; MaiScanner scanner(stdin); MaiPrinter printer(stdout); // clang-format on // int N, M; vector<pair<int, int>> edges; // int main() { scanner >> N >> M; map<int, int> zip; vector<int> unzip; zip[0] = 0; zip[N-1] = 0; // unzip.reserve(); edges.reserve(M); repeat(i, M) { int a, b; scanner >> a >> b; --a; --b; if (a > b) swap(a, b); edges.emplace_back(a, b); zip[a] = 0; zip[b] = 0; } int n; { int p = 0; for (auto& kv : zip) { kv.second = p++; unzip.emplace_back(kv.first); } n = p; } vector<ll> dp(n + 1); fill(all(dp), numeric_limits<ll>::max()/4); dp[0] = 0; vector<vector<int>> vertices(n + 1); for (auto e : edges) { vertices[zip[e.first]].push_back(zip[e.second]); } repeat(i, n-1) { ll a = unzip[i]; chmin<ll>(dp[i+1], dp[i] + 2ll*(unzip[i+1] - a)); for (auto to : vertices[i]) { chmin<ll>(dp[to], dp[i] + 2ll*(unzip[to] - a) - 1); } } cout << dp[n-1] << endl; return 0; }