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Submission #588694

# Submission time Handle Problem Language Result Execution time Memory
588694 2022-07-03T21:31:50 Z MohammadAghil Swap (BOI16_swap) C++17
68 / 100
 1000 ms 121112 KB 
      #include <bits/stdc++.h>
//   #pragma GCC optimize ("Ofast,unroll-loops")
// #pragma GCC target ("avx2")
    using namespace std;
  typedef long long ll;
   typedef pair<int, int> pp;
    #define er(args ...) cerr << __LINE__ << ": ", err(new istringstream(string(#args)), args), cerr << endl
      #define per(i,r,l) for(int i = (r); i >= (l); i--)
        #define rep(i,l,r) for(int i = (l); i < (r); i++)
           #define all(x) begin(x), end(x)
              #define sz(x) (int)(x).size()
                  #define pb push_back
                      #define ss second
                           #define ff first
                                   void err(istringstream *iss){}template<typename T,typename ...Args> void err(istringstream *iss,const T &_val, const Args&...args){string _name;*iss>>_name;if(_name.back()==',')_name.pop_back();cerr<<_name<<" = "<<_val<<", ",err(iss,args...);}
void IOS(){
     cin.tie(0) -> sync_with_stdio(0);
     // #ifndef ONLINE_JUDGE
     //      freopen("in.in", "r", stdin);
     //      freopen("out.out", "w", stdout);
     // #endif
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll mod = 998244353, maxn = 2e5 + 5, lg = 35, inf = ll(1e9) + 5;
ll pw(ll a,ll b,ll md=mod){if(!b)return 1;ll k=pw(a,b>>1ll);return k*k%md*(b&1ll?a:1)%md;}

int a[maxn], n, cnt[maxn];
vector<int> cand[maxn];
pair<int, pp> nxt[maxn][lg];

int get(int u, int x){
     return lower_bound(all(cand[u]), x) - begin(cand[u]);
}

// vector<int> get(int r, int p, int lx, int rx){
//      vector<int> cand, resl = dp[r<<1][get(r<<1, lx)], resr = dp[r<<1|1][get(r<<1|1, rx)];
//      cand.reserve(sz(dp[r<<1][0]) + sz(dp[r<<1|1][0]) + 1); cand.pb(a[p]);
//      int ptr1 = 0, ptr2 = 0, st = 0;
//      while(ptr1 < sz(resl) || ptr2 < sz(resr)){
//           int k = 1<<st;
//           while(k && ptr1 < sz(resl)) cand.pb(resl[ptr1++]), k--;
//           k = 1<<st;
//           while(k && ptr2 < sz(resr)) cand.pb(resr[ptr2++]), k--;
//           st++;
//      }
//      return cand;
// }

vector<int> res;

void dfs(int r, int vl, int id){
     // if(r > n) return;
     res[id-1] = a[nxt[r][vl].ff];
     if(r<<1 <= n) dfs(r<<1, get(r<<1, nxt[r][vl].ss.ff), id<<1);
     if(r<<1 < n) dfs(r<<1|1, get(r<<1|1, nxt[r][vl].ss.ss), id<<1|1);
}

vector<int> get(int r, int p, int lx, int rx){
     res.clear();
     res.resize(cnt[r]);
     res[0] = a[p];
     dfs(r<<1, get(r<<1, lx), 2), dfs(r<<1|1, get(r<<1|1, rx), 3);
     return res;
}

void dfs(int r){
     int cnt = 0;
     if(r<<1 <= n) dfs(r<<1), cnt++;
     if(r<<1 < n) dfs(r<<1|1), cnt++;
     rep(i,0,sz(cand[r])){
          int x = cand[r][i];
          if(cnt == 0) nxt[r][i] = {x, {-1, -1}};
          else if(cnt == 1){
               nxt[r][i] = {x, {r<<1, -1}};
               if(a[x] > a[r<<1]) swap(nxt[r][i].ff, nxt[r][i].ss.ff); 
          }else{
               int lx = r<<1, rx = r<<1|1;
               if(a[x] < a[lx] && a[x] < a[rx]) nxt[r][i] = {x, {lx, rx}}; 
               else if(a[lx] < a[x] && a[x] < a[rx]) nxt[r][i] = {lx, {x, rx}};
               else if(a[lx] < a[rx] && a[rx] < a[x]) nxt[r][i] = {lx, {x, rx}};
               else {
                    nxt[r][i] = {rx, {x, lx}};
                    if(get(r, rx, x, lx) > get(r, rx, lx, x)) swap(nxt[r][i].ss.ff, nxt[r][i].ss.ss);
               }
          }
     }
}

int main(){ IOS();
     cin >> n;
     rep(i,1,n+1) cin >> a[i];
     rep(i,1,n+1){
          cand[i].pb(i);
          for(int j = i; j > 1; j >>= 1) {
               cand[i].pb(j>>1);
               if(j&1) cand[i].pb(j^1);
          }
          sort(all(cand[i]));
          while(sz(cand[i]) && cand[i].back() > n) cand[i].pop_back();
     }
     per(i,n,1) cnt[i] = 1 + (i<<1 <= n? cnt[i<<1]: 0) + (i<<1 < n? cnt[i<<1|1]: 0);
     dfs(1);
     // rep(i,1,n+1){
     //      rep(j,0,sz(cand[i])){
     //           er(i, cand[i][j]);
     //           for(int c:get(i, nxt[i][j].ff, nxt[i][j].ss.ff, nxt[i][j].ss.ss)) cerr << c << ' '; cerr << '\n';
     //      }
     // }
     for(int c: get(1, nxt[1][0].ff, nxt[1][0].ss.ff, nxt[1][0].ss.ss)) cout << c << ' '; 
     return 0;  
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5048 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5048 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 4 ms 5460 KB Output is correct
12 Correct 4 ms 5560 KB Output is correct
13 Correct 4 ms 5548 KB Output is correct
14 Correct 5 ms 5460 KB Output is correct
15 Correct 5 ms 5460 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5048 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 4 ms 5460 KB Output is correct
12 Correct 4 ms 5560 KB Output is correct
13 Correct 4 ms 5548 KB Output is correct
14 Correct 5 ms 5460 KB Output is correct
15 Correct 5 ms 5460 KB Output is correct
16 Correct 125 ms 33868 KB Output is correct
17 Correct 142 ms 33748 KB Output is correct
18 Correct 150 ms 33928 KB Output is correct
19 Correct 284 ms 33756 KB Output is correct
20 Correct 319 ms 33756 KB Output is correct

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5048 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 4 ms 5460 KB Output is correct
12 Correct 4 ms 5560 KB Output is correct
13 Correct 4 ms 5548 KB Output is correct
14 Correct 5 ms 5460 KB Output is correct
15 Correct 5 ms 5460 KB Output is correct
16 Correct 125 ms 33868 KB Output is correct
17 Correct 142 ms 33748 KB Output is correct
18 Correct 150 ms 33928 KB Output is correct
19 Correct 284 ms 33756 KB Output is correct
20 Correct 319 ms 33756 KB Output is correct
21 Correct 710 ms 121112 KB Output is correct
22 Correct 729 ms 120984 KB Output is correct
23 Correct 747 ms 120972 KB Output is correct
24 Execution timed out 1090 ms 91492 KB Time limit exceeded
25 Halted 0 ms 0 KB -