結果
問題 | No.483 マッチ並べ |
ユーザー | __math |
提出日時 | 2017-02-10 23:40:34 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 5,358 bytes |
コンパイル時間 | 1,976 ms |
コンパイル使用メモリ | 176,392 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-09 07:51:13 |
合計ジャッジ時間 | 3,321 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 1 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 | 1 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 1 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 1 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 1 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 1 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,376 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 1 ms
5,376 KB |
testcase_35 | AC | 1 ms
5,376 KB |
testcase_36 | AC | 1 ms
5,376 KB |
testcase_37 | AC | 1 ms
5,376 KB |
testcase_38 | AC | 2 ms
5,376 KB |
testcase_39 | AC | 2 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 2 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
testcase_43 | AC | 2 ms
5,376 KB |
testcase_44 | AC | 2 ms
5,376 KB |
testcase_45 | AC | 1 ms
5,376 KB |
testcase_46 | AC | 2 ms
5,376 KB |
testcase_47 | AC | 1 ms
5,376 KB |
testcase_48 | AC | 2 ms
5,376 KB |
testcase_49 | AC | 2 ms
5,376 KB |
testcase_50 | AC | 2 ms
5,376 KB |
testcase_51 | AC | 2 ms
5,376 KB |
testcase_52 | AC | 2 ms
5,376 KB |
testcase_53 | AC | 1 ms
5,376 KB |
testcase_54 | AC | 2 ms
5,376 KB |
testcase_55 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define FOR(i,n) for(int i = 0; i < (n); i++) #define sz(c) ((int)c.size()) #define ten(n) ((int)1e##n) using ll = long long; using Pii = pair<int, int>; using Pll = pair<ll, ll>; template<typename ...> static inline int getchar_unlocked(void) { return getchar(); } template<typename ...> static inline void putchar_unlocked(int c) { putchar(c); } #define mygc(c) (c)=getchar_unlocked() #define mypc(c) putchar_unlocked(c) void reader(int& x) { int k, m = 0; x = 0; for (;;) { mygc(k); if (k == '-') { m = 1; break; }if ('0' <= k&&k <= '9') { x = k - '0'; break; } }for (;;) { mygc(k); if (k<'0' || k>'9')break; x = x * 10 + k - '0'; }if (m) x = -x; } void reader(ll& x) { int k, m = 0; x = 0; for (;;) { mygc(k); if (k == '-') { m = 1; break; }if ('0' <= k&&k <= '9') { x = k - '0'; break; } }for (;;) { mygc(k); if (k<'0' || k>'9')break; x = x * 10 + k - '0'; }if (m) x = -x; } int reader(char c[]) { int i, s = 0; for (;;) { mygc(i); if (i != ' '&&i != '\n'&&i != '\r'&&i != '\t'&&i != EOF) break; }c[s++] = i; for (;;) { mygc(i); if (i == ' ' || i == '\n' || i == '\r' || i == '\t' || i == EOF) break; c[s++] = i; }c[s] = '\0'; return s; } int reader(string& c) { int i; for (;;) { mygc(i); if (i != ' '&&i != '\n'&&i != '\r'&&i != '\t'&&i != EOF) break; }c.push_back(i); for (;;) { mygc(i); if (i == ' ' || i == '\n' || i == '\r' || i == '\t' || i == EOF) break; c.push_back(i); }; return sz(c); } template <class T, class S> void reader(T& x, S& y) { reader(x); reader(y); } template <class T, class S, class U> void reader(T& x, S& y, U& z) { reader(x); reader(y); reader(z); } template <class T, class S, class U, class V> void reader(T& x, S& y, U& z, V & w) { reader(x); reader(y); reader(z); reader(w); } void writer(int x, char c) { int s = 0, m = 0; char f[10]; if (x<0)m = 1, x = -x; while (x)f[s++] = x % 10, x /= 10; if (!s)f[s++] = 0; if (m)mypc('-'); while (s--)mypc(f[s] + '0'); mypc(c); } void writer(ll x, char c) { int s = 0, m = 0; char f[20]; if (x<0)m = 1, x = -x; while (x)f[s++] = x % 10, x /= 10; if (!s)f[s++] = 0; if (m)mypc('-'); while (s--)mypc(f[s] + '0'); mypc(c); } void writer(const char c[]) { int i; for (i = 0; c[i] != '\0'; i++)mypc(c[i]); } void writer(const char x[], char c) { int i; for (i = 0; x[i] != '\0'; i++)mypc(x[i]); mypc(c); } template<class T> void writerLn(T x) { writer(x, '\n'); } template<class T, class S> void writerLn(T x, S y) { writer(x, ' '); writer(y, '\n'); } template<class T, class S, class U> void writerLn(T x, S y, U z) { writer(x, ' '); writer(y, ' '); writer(z, '\n'); } template<class T> void writerArr(T x[], int n) { if (!n) { mypc('\n'); return; }FOR(i, n - 1)writer(x[i], ' '); writer(x[n - 1], '\n'); } template<class T> void writerArr(vector<T>& x) { writerArr(x.data(), (int)x.size()); } template<class T> T gcd(T a, T b) { return b ? gcd(b, a % b) : a; } template<class T> T lcm(T a, T b) { return a / gcd(a, b) * b; } ll mod_pow(ll a, ll n, ll mod) { ll ret = 1; ll p = a % mod; while (n) { if (n & 1) ret = ret * p % mod; p = p * p % mod; n >>= 1; } return ret; } template<class T> T extgcd(T a, T b, T& x, T& y) { for (T u = y = 1, v = x = 0; a;) { T q = b / a; swap(x -= q * u, u); swap(y -= q * v, v); swap(b -= q * a, a); } return b; } template<class T> T mod_inv(T a, T m) { T x, y; extgcd(a, m, x, y); return (m + x % m) % m; } struct E { int to, rev, cap; E(int to, int rev, int cap) : to(to), rev(rev), cap(cap) {} }; const int MAX_V = 1000; int level[MAX_V], iter[MAX_V]; vector<E> e[MAX_V]; void add_undirected_edge(int f, int t, int c) { e[f].push_back(E(t, sz(e[t]), c)); e[t].push_back(E(f, sz(e[f]) - 1, c)); } void add_directed_edge(int f, int t, int c) { e[f].push_back(E(t, sz(e[t]), c)); e[t].push_back(E(f, sz(e[f]) - 1, 0)); } void bfs(int s) { memset(level, -1, sizeof(level)); queue<int> q; level[s] = 0; q.push(s); while (!q.empty()) { int v = q.front(); q.pop(); for (auto t : e[v]) { if (t.cap > 0 && level[t.to] < 0) { level[t.to] = level[v] + 1; q.push(t.to); } } } } int dfs(int v, int t, int f) { if (v == t) return f; for (int &i = iter[v]; i < sz(e[v]); i++) { E& _e = e[v][i]; if (_e.cap > 0 && level[v] < level[_e.to]) { int d = dfs(_e.to, t, min(f, _e.cap)); if (d > 0) { _e.cap -= d; e[_e.to][_e.rev].cap += d; return d; } } } return 0; } int max_flow(int s, int t) { int flow = 0; while (true) { bfs(s); if (level[t] < 0) return flow; memset(iter, 0, sizeof(iter)); int f; while ((f = dfs(s, t, ten(6))) > 0) { flow += f; } } } int main() { int n; reader(n); vector<Pii> vp; FOR(i, n) { int a, b, c, d; reader(a, b, c, d); vp.emplace_back(a * 200 + b, c * 200 + d); } set<int> sidx; for (auto kv : vp) { sidx.insert(kv.first); sidx.insert(kv.second); } vector<int> idx(sidx.begin(), sidx.end()); const int s = sz(idx), t = sz(idx) + 1; FOR(i,n) { auto& kv = vp[i]; kv.first = lower_bound(idx.begin(), idx.end(), kv.first) - idx.begin(); kv.second = lower_bound(idx.begin(), idx.end(), kv.second) - idx.begin(); const int md = t + i + 1; add_directed_edge(s, md, 1); add_directed_edge(md, kv.first, 1); add_directed_edge(md, kv.second, 1); } FOR(i, sz(idx)) add_directed_edge(i, t, 1); int f = max_flow(s, t); puts(f == n ? "YES" : "NO"); return 0; }