結果
問題 | No.2639 Longest Increasing Walk |
ユーザー | airths |
提出日時 | 2024-02-19 21:45:22 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
RE
|
実行時間 | - |
コード長 | 3,455 bytes |
コンパイル時間 | 1,534 ms |
コンパイル使用メモリ | 138,368 KB |
実行使用メモリ | 24,956 KB |
最終ジャッジ日時 | 2024-09-29 01:40:04 |
合計ジャッジ時間 | 5,055 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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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
6,820 KB |
testcase_01 | AC | 1 ms
6,820 KB |
testcase_02 | AC | 1 ms
6,820 KB |
testcase_03 | AC | 2 ms
6,816 KB |
testcase_04 | AC | 39 ms
17,200 KB |
testcase_05 | AC | 61 ms
24,892 KB |
testcase_06 | RE | - |
testcase_07 | RE | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | RE | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | RE | - |
testcase_15 | RE | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | RE | - |
testcase_19 | WA | - |
testcase_20 | RE | - |
testcase_21 | WA | - |
testcase_22 | RE | - |
testcase_23 | RE | - |
testcase_24 | RE | - |
testcase_25 | RE | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | AC | 2 ms
6,820 KB |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | RE | - |
testcase_32 | WA | - |
ソースコード
/* * * ^v^ * */ #include <iostream> #include <numeric> #include <set> #include <iomanip> #include <chrono> #include <queue> #include <string> #include <vector> #include <functional> #include <map> #include <bitset> #include <algorithm> #include <array> #include <random> using namespace std; using ll = long long int; using ld = long double; #define iamtefu ios_base::sync_with_stdio(false); cin.tie(0); #define fl(i,a,n) for (ll i{a}; i<n; i++) #define fr(x,s) for(auto x:s) #define rfl(i,a,n) for (ll i{n-1}; i>=a; i--) #define ty int _; for(cin>>_; _--;) #define print(a) for(auto ele:a){cout<<ele<<" ";}cout<<'\n'; #define all(x) x.begin(), x.end() template <typename L, typename R> inline bool chmax(L &a, R b){if (a<b){a=b;return 1;}return 0;} template <typename L, typename R> inline bool chmin(L &a, R b){if (a>b){a=b;return 1;}return 0;} template <typename L, typename R> ostream& operator<<(ostream &fout, const pair<L, R> &p){ fout<<"{"<<p.first<<","<<p.second<<"}"; return fout; } template <typename L, typename R, typename U> ostream& operator<<(ostream &fout, const tuple<L, R, U> &p){ auto &[l, r, u] = p; fout<<"{"<<l<<","<<r<<","<<u<<"}"; return fout; } template <typename T> ostream& operator<<(ostream &fout, const vector <T> &v){ for (auto &x:v){ fout<<x<<" "; } fout<<"\n"; return fout; } template <typename T> ostream& operator<<(ostream &fout, const set <T> &st){ for (auto &x:st){ fout<<x<<" "; } fout<<"\n"; return fout; } template <typename T> ostream& operator<<(ostream &fout, const multiset <T> &st){ for (auto &x:st){ fout<<x<<" "; } fout<<"\n"; return fout; } template <typename K, typename V> ostream& operator<<(ostream &fout, const map<K, V> &mp){ fout<<"["; for (auto &[x,y]:mp){ fout<<x<<":"<<y<<" "; } fout<<"]\n"; return fout; } ll gcd(ll a, ll b){ if (b==0){ return a; } return gcd(b, a%b); } mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count()); ll pw(ll a, ll b, ll m){ ll res=1; a%=m; while (b){ if (b&1){ res=(res*a)%m; } a=(a*a)%m; b/=2; } return res; } void scn(){ // not necessarily distinct // right down ll n, m; cin>>n>>m; vector <vector <ll>> a(n, vector <ll>(m)); fl(i,0,n){ fl(j,0,m){ cin>>a[i][j]; } } vector <vector <ll>> ed((n*m)+1); fl(i,0,n){ fl(j,0,m){ if (j>0){ if (a[i][j]>a[i][j-1]){ ed[i*n+j-1].push_back(i*n+j); } else if (a[i][j]<a[i][j-1]){ ed[i*n+j].push_back(i*n+j-1); } } if (i>0){ if (a[i-1][j]>a[i][j]){ ed[(i)*n+j].push_back((i-1)*n+j); } else if (a[i-1][j]<a[i][j]){ ed[(i-1)*n+j].push_back(i*n+j); } } } } vector <ll> topo, vis(n*m+1); auto dfs=[&](const auto &self, ll i)->void{ vis[i]++; for (auto x:ed[i]){ if (!vis[x]){ self(self, x); } } topo.push_back(i); }; fl(i,0,n*m){ if (!vis[i]){ dfs(dfs, i); } } vector <ll> dp(n*m+1, 1); reverse(all(topo)); for (auto x:topo){ for (auto y:ed[x]){ chmax(dp[y], dp[x]+1); } } cout<<*max_element(all(dp))<<'\n'; } int main(){ iamtefu; #if defined(airths) auto t1=chrono::high_resolution_clock::now(); freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); #endif // ty { scn(); } #if defined(airths) auto t2=chrono::high_resolution_clock::now(); ld ti=chrono::duration_cast<chrono::nanoseconds>(t2-t1).count(); ti*=1e-6; cerr<<"Time: "<<setprecision(12)<<ti; cerr<<"ms\n"; #endif return 0; }