제출 #507011

#제출 시각아이디문제언어결과실행 시간메모리
507011dannyboy20031204Longest beautiful sequence (IZhO17_subsequence)C++17
0 / 100
1 ms460 KiB
#include <bits/stdc++.h> #define ll long long #define fi first #define se second #define mp make_pair using namespace std; void db() {cout << endl;} template <typename T, typename ...U> void db(T a, U ...b) {cout << a << ' ', db(b...);} #ifdef Cloud #define file freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout) #else #define file ios::sync_with_stdio(false); cin.tie(0) #endif #define pii pair<int, int> const int inf = 1e9, N = 120, _N = 501, mod = 998244353; pair<int, int> p[_N][N]{}; pii get(pii u){ return p[u.fi][u.se] = p[u.fi][u.se] == u ? u : get(p[u.fi][u.se]); } void merge(pii a, pii b){ b = get(b); p[a.fi][a.se] = b; } int main(){ file; /* int n; cin >> n; int a[n], tot = 0; for (int &i : a) cin >> i, tot += i; if (tot % 2) return cout << 0 << '\n', 0; int cnt[N]{}; bool dp[N]{}, can[_N][N]{}; for (int i = 0; i < N; i++) p[n][i] = {n, i}; for (int i = n - 1; i >= 0; i--){ for (int j = 0; j < N; j++) p[i][j] = p[i + 1][j]; for (int j = a[i]; j < N; j++) merge(p[i][j], p[i + 1][j - a[i]]); } dp[0] = 1; //db(p[3][8]); for (int i = 0; i < n; i++){ bool can[N]{}; for (int j = 0; j < N; j++) if (dp[j]) { auto u = get(i + 1, j); can[u.fi][u.se] = 1; } for (int j = 0; j < N; j++) { auto u = get(i + 1, j); if (can[u.fi][u.se] and j * 2 >= tot - a[i]){ db(i, j, j * 2 - tot + a[i]); cnt[j * 2 - tot + a[i]]++; } } for (int j = N - 1; j >= a[i]; j--) dp[j] |= dp[j - a[i]]; } if (!dp[tot / 2]) return cout << 0 << '\n', 0; vector<int> ans; for (int i = 1; i < N; i++) if (cnt[i] == n) ans.push_back(i); cout << ans.size() << '\n'; for (int i : ans) cout << i << ' '; */ int n; cin >> n; int a[n], k[n], dp[(1 << 8)]{}, par[n], ma[(1 << 8)], ans = 0, tar = 0; for (int i = 0; i < n; i++) cin >> a[i]; for (int i = 0; i < n; i++) cin >> k[i]; for (int i = 0; i < n; i++){ int tmp = 1; par[i] = -1; if (i) for (int j = 0; j < (1 << 8); j++) if (__builtin_popcount(a[i] & j) == k[i]){ if (tmp < dp[j] + 1) tmp = dp[j] + 1, par[i] = ma[j]; } if (tmp > dp[a[i]]) dp[a[i]] = tmp, ma[a[i]] = i; if (tmp > ans) ans = tmp, tar = i; } cout << ans <<'\n'; vector<int> v; for (int i = tar; i >= 0; i = par[i]) v.push_back(i); reverse(v.begin(), v.end()); for (int i : v) cout << i + 1 << ' '; }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...