結果
問題 | No.697 池の数はいくつか |
ユーザー | uchiiii |
提出日時 | 2020-09-06 19:26:55 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,624 ms / 6,000 ms |
コード長 | 4,903 bytes |
コンパイル時間 | 3,736 ms |
コンパイル使用メモリ | 231,748 KB |
実行使用メモリ | 98,956 KB |
最終ジャッジ日時 | 2024-11-15 04:58:00 |
合計ジャッジ時間 | 15,198 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 2 ms
5,248 KB |
testcase_12 | AC | 2 ms
5,248 KB |
testcase_13 | AC | 2 ms
5,248 KB |
testcase_14 | AC | 2 ms
5,248 KB |
testcase_15 | AC | 2 ms
5,248 KB |
testcase_16 | AC | 2 ms
5,248 KB |
testcase_17 | AC | 2 ms
5,248 KB |
testcase_18 | AC | 2 ms
5,248 KB |
testcase_19 | AC | 2 ms
5,248 KB |
testcase_20 | AC | 2 ms
5,248 KB |
testcase_21 | AC | 2 ms
5,248 KB |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 2 ms
5,248 KB |
testcase_24 | AC | 165 ms
13,920 KB |
testcase_25 | AC | 165 ms
13,788 KB |
testcase_26 | AC | 165 ms
13,916 KB |
testcase_27 | AC | 165 ms
13,912 KB |
testcase_28 | AC | 166 ms
13,916 KB |
testcase_29 | AC | 1,164 ms
74,752 KB |
testcase_30 | AC | 1,620 ms
98,948 KB |
testcase_31 | AC | 1,133 ms
74,752 KB |
testcase_32 | AC | 1,608 ms
98,956 KB |
testcase_33 | AC | 1,624 ms
98,820 KB |
testcase_34 | AC | 1,618 ms
98,952 KB |
ソースコード
#pragma GCC target("avx2") #pragma GCC optimize("03") #pragma GCC optimize("unroll-loops") #include <bits/stdc++.h> using namespace std; typedef long double ld; typedef long long ll; typedef unsigned long long ull; #define endl "\n" #define FOR(i,a,b) for(int i=(a);i<=(b);i++) #define rep(i,n) for(int i=0;i<(n);i++) #define PII pair<int, int> #define PLL pair<ll, ll> #define ALL(x) (x).begin(), (x).end() int dx[] = {1, 0, -1, 0}; int dy[] = {0, 1, 0, -1}; constexpr int INF=1<<30; constexpr ll LINF=1LL<<60; constexpr ll mod=1e9+7; template<class T>vector<T> vec(int len, T elem) { return vector<T>(len, elem); } // auto dp = vec(52, vec(103, vec(103, INF))); template<class T>inline bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; } template<class T>inline bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; } template<class T>inline int popcount(T a) {return __builtin_popcount(a);} template<class T>inline T emod(T a, T p) { return (a%p + p) % p;} template <typename T> istream &operator>>(istream &is, vector<T> &vec) { for (auto &v : vec) is >> v; return is; } template <typename T> ostream &operator<<(ostream &os, const vector<T> &vec) {os << '\n'; for (auto v : vec) os << v << ' '; os << '\n'; return os;} template <typename T> ostream &operator<<(ostream &os, const deque<T> &vec) { os << "deq["; for (auto v : vec) os << v << ','; os << ']'; return os; } template <typename T> ostream &operator<<(ostream &os, const set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T> ostream &operator<<(ostream &os, const unordered_set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T> ostream &operator<<(ostream &os, const multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &pa) { os << '(' << pa.first << ',' << pa.second << ')'; return os; } template <typename TK, typename TV> ostream &operator<<(ostream &os, const map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; } template <typename TK, typename TV> ostream &operator<<(ostream &os, const unordered_map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; } struct MyIO { MyIO(){ cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } } IO_OI; #ifdef LOCAL void debug_out() { cerr << endl; } template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << " " << H; debug_out(T...); } #define debug(...) \ cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__) #define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif //------------------- struct GridUnionFind { int H, W; std::vector<int> par, cou; using P = std::pair<int, int>; GridUnionFind(int H_, int W_) : H(H_), W(W_), par(H * W), cou(H * W, 1) { std::iota(par.begin(), par.end(), 0); } inline int id_(int h, int w) { return h * W + w; } inline bool coordinate_valid(int h, int w) { return h >= 0 and h < H and w >= 0 and w < W; } int _find(int x) { return (par[x] == x) ? x : (par[x] = _find(par[x])); } bool _unite(int x, int y) { x = _find(x), y = _find(y); if (x == y) return false; if (cou[x] < cou[y]) std::swap(x, y); par[y] = x, cou[x] += cou[y]; return true; } int find(int h, int w) { assert(coordinate_valid(h, w)); return _find(id_(h, w)); } bool unite(int h, int w, int h2, int w2) { assert(coordinate_valid(h, w) and coordinate_valid(h2, w2)); return _unite(id_(h, w), id_(h2, w2)); } int count(int h, int w) { return cou[find(h, w)]; } bool same(int h, int w, int h2, int w2) { return find(h, w) == find(h2, w2); } }; int main() { int H,W;cin>>H>>W; GridUnionFind uf(H, W); auto on = [&](int h, int w) { if(h<0 or h>=H) return false; if(w<0 or w>=W) return false; return true; }; auto a = vec(H, vec(W, false)); rep(i,H)rep(j,W) { int k; cin >> k; if(k==1) a[i][j]=true; } rep(i,H)rep(j,W) { rep(k, 4) { int ni = i+dy[k]; int nj = j+dx[k]; if(on(ni, nj) and a[ni][nj]==a[i][j]) uf.unite(ni,nj,i,j); } } unordered_set<int>mp; rep(i,H)rep(j,W) { if(a[i][j]==1 and mp.count(uf.find(i,j))==0) mp.insert(uf.find(i,j)); } cout << mp.size() << endl; }