Submission #1266067

#TimeUsernameProblemLanguageResultExecution timeMemory
1266067vahagngLongest beautiful sequence (IZhO17_subsequence)C++20
23 / 100
163 ms117576 KiB
//----------vahagng----------// #define _CRT_SECURE_NO_WARNINGS #include <bits/stdc++.h> // #include <ext/pb_ds/assoc_container.hpp> using namespace std; // using namespace __gnu_pbds; // template <class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>; #ifndef ONLINE_JUDGE #define dbg(x) cerr << #x <<" "; print(x); cerr << endl; #else #define dbg(x) #endif void print(long long t) { cerr << t; } void print(int t) { cerr << t; } void print(string t) { cerr << t; } void print(char t) { cerr << t; } void print(double t) { cerr << t; } void print(long double t) { cerr << t; } void print(unsigned long long t) { cerr << t; } template <class T, class V> void print(pair <T, V> p); template <class T> void print(vector <T> v); template <class T> void print(set <T> v); template <class T, class V> void print(map <T, V> v); template <class T> void print(multiset <T> v); template <class T, class V> void print(T v[], V n) { cerr << "["; for (int i = 0; i < n; i++) { cerr << v[i] << " "; } cerr << "]"; } template <class T, class V> void print(pair <T, V> p) { cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}"; } template <class T> void print(vector <T> v) { cerr << "[ "; for (T i : v) { print(i); cerr << " "; } cerr << "]"; } template <class T> void print(set <T> v) { cerr << "[ "; for (T i : v) { print(i); cerr << " "; } cerr << "]"; } template <class T> void print(multiset <T> v) { cerr << "[ "; for (T i : v) { print(i); cerr << " "; } cerr << "]"; } template <class T, class V> void print(map <T, V> v) { cerr << "[ "; for (auto i : v) { print(i); cerr << " "; } cerr << "]"; } #define ll long long #define all(v) v.begin(), v.end() #define rall(v) v.rbegin(), v.rend() #define ld long double #define sz(v) v.size() #define endl '\n' const ll inf = 1e18, mod = 1e9 + 7, mod2 = 998244353; void SetIO(string str = "") { if (str != "") { freopen((str + ".in").c_str(), "r", stdin); freopen((str + ".out").c_str(), "w", stdout); } else { freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); } } void FastIO() { ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); } const int N = 1e5 + 10; ll n, a[N], k[N], prv[N], bc1[1 << 8][1 << 8], dp[N], bc[5005][5005]; pair<ll, ll> dp1[(1 << 8) + 1]; void solve(int tc) { cin >> n; for (int i = 1; i <= n; i++) { cin >> a[i]; dp[i] = 1; } for (int i = 1; i <= n; i++) cin >> k[i]; if(n > 5000){ for(int i = 1; i <= n; i++) prv[i] = i; for(int i = 0; i < (1 << 8); i++){ for(int j = 0; j < (1 << 8); j++){ bc1[i][j] = __builtin_popcount(i&j); } } for (int j = 0; j < (1 << 8); j++) { dp1[j] = { -1, -1 }; } ll mx = 0, id = -1; for (int i = 1; i <= n; i++) { if (dp1[a[i]].first == -1) { dp1[a[i]] = { 1, i }; } for (int j = 0; j < (1 << 8); j++) { if (bc1[a[i]][j] == k[i] && dp1[j].first + 1 > dp1[a[i]].first) { dp1[a[i]].first = dp1[j].first + 1; dp1[a[i]].second = i; prv[i] = dp1[j].second; } } if (dp1[a[i]].first > mx) { mx = dp1[a[i]].first; id = i; } } vector<int>ans; while (prv[id] != id) { ans.push_back(id); id = prv[id]; } ans.push_back(id); reverse(all(ans)); cout << mx << endl; for (auto i : ans) cout << i << ' '; cout << endl; return; } dp[0] = 1; for (int i = 1; i <= n; i++) { for (int j = i; j <= n; j++) { bc[i][j] = __builtin_popcount(a[i] & a[j]); } } for (int i = 2; i <= n; i++) { for (int j = 1; j < i; j++) { if (bc[j][i] == k[i]) { if (dp[i] < dp[j] + 1) { dp[i] = dp[j] + 1; prv[i] = j; } } } } ll id = -1, mx = 0; for (int i = 1; i <= n; i++) { if (dp[i] > mx) { mx = dp[i]; id = i; } } cout << mx << endl; vector<int>ans; while (id != 0) { ans.push_back(id); id = prv[id]; } reverse(all(ans)); for (auto i : ans) cout << i << ' '; cout << endl; } void precalc() { } int main() { // SetIO("moocast"); FastIO(); int test_case = 1; // cin >> test_case; precalc(); int cnt = 1; while (test_case--) { solve(cnt++); } return 0; }

Compilation message (stderr)

subsequence.cpp: In function 'void SetIO(std::string)':
subsequence.cpp:47:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |         freopen((str + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
subsequence.cpp:48:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |         freopen((str + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
subsequence.cpp:51:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
subsequence.cpp:52:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
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