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Submission #599657

# Submission time Handle Problem Language Result Execution time Memory
599657 2022-07-19T18:01:33 Z MohammadAghil Inside information (BOI21_servers) C++17
100 / 100
 589 ms 46076 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);
     
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll mod = 1e9 + 7, maxn = 3e5 + 5, lg = 22, 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 fen[maxn];
vector<int> his;
void upd(int i, bool add = true){
     if(add) his.pb(i);
     for(i++; i < maxn; i += i&-i) fen[i] += add?1:-1;
}
int get(int i){
     int res = 0;
     for(i++; i; i -= i&-i) res += fen[i];
     return res;
}
 
vector<pp> adj[maxn];
vector<pp> query1[maxn];
vector<int> query2[maxn];
int cnt[maxn], id[maxn], tp[maxn], ans[maxn], n;
bool ban[maxn], rc[maxn], cr[maxn];
 
void dfs(int r, int p = -1, bool st = true){ //
     cnt[r] = st?1:-1;
     for(auto[c, t]: adj[r]) if(!ban[c] && c - p) dfs(c, r, st), cnt[r] += st?cnt[c]:0;
}

int find_cent(int r, int p, int tot){ //
     for(auto[c, t]: adj[r]) if(c - p && !ban[c] && (cnt[c]<<1) > tot) return find_cent(c, r, tot);
     return r;
}
 
void dfs2(int r, int p, int ID){
     id[r] = ID;
     if(r - ID){
          rc[r] = rc[p]&(tp[r] > tp[p]);
          cr[r] = cr[p]&(tp[r] < tp[p]);
     }
     for(auto[c, t]: adj[r]) if(c - p && !ban[c]) tp[c] = t, dfs2(c, r, ID); 
}
 
vector<int> tmp;
 
void dfs3(int r, int p){
     if(rc[r]) tmp.pb(tp[r]);
     for(auto[c, t]: query1[r]) if(cnt[c] + 1 && id[c] == -1){
          ans[t] = cr[r]&(tp[id[r]] < t);
     } else if(cnt[c] + 1 && tp[id[c]] > tp[id[r]]){
          ans[t] = cr[r]&rc[c]&(tp[c] < t);
     }
     for(int t: query2[r]) if(cr[r] && tp[id[r]] < t){
          ans[t] += get(t);
     }
     for(auto[c, t]: adj[r]) if(c - p && !ban[c]) dfs3(c, r);
}
 
void reset(int r){
     for(int c: his) upd(c, false);
     his.clear();
     dfs(r, -1, false);
     ban[r] = true;
}
 
void dec(int r){
     dfs(r);
     r = find_cent(r, -1, cnt[r]);
     sort(all(adj[r]), [&](pp a, pp b){ return a.ss > b.ss; });
     rc[r] = cr[r] = true, id[r] = -1;
     for(auto[c, t]: adj[r]) if(!ban[c]) rc[c] = cr[c] = true, tp[c] = t, dfs2(c, r, c);
     upd(0);
     for(auto[c, t]: adj[r]) if(!ban[c]){
          dfs3(c, r);
          for(int v: tmp) upd(v);
          tmp.clear();
     }
     for(auto[c, t]: query1[r]) if(cnt[c] + 1 && rc[c] && t > tp[c]) ans[t] = true;
     for(int t: query2[r]) ans[t] += get(t);
     reset(r);
     for(auto[c, t]: adj[r]) if(!ban[c]) dec(c);
}
 
int main(){ IOS();
     int k; cin >> n >> k;
     vector<int> ty(n+k);
     rep(i,0,n+k-1){
          char c; cin >> c;
          if(c == 'S'){
               int u, v; cin >> u >> v; u--, v--;
               adj[u].pb({v, i}), adj[v].pb({u, i});
          }else if(c == 'Q'){
               ty[i] = 1;
               int u, v; cin >> u >> v; u--, v--;
               if(u - v) query1[v].pb({u, i});
               else ans[i] = 1;
          }else{
               ty[i] = 2;
               int d; cin >> d; d--;
               query2[d].pb(i);
          }
     }
     dec(0);
     rep(i,0,n+k-1) if(ty[i]){
          if(ty[i]&1) cout << (ans[i]?"yes":"no") << '\n';
          else cout << ans[i] << '\n';
     }
     return 0; 
}

Subtask #1
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 33 ms 24660 KB Output is correct
2 Correct 46 ms 25048 KB Output is correct
3 Correct 51 ms 24904 KB Output is correct
4 Correct 55 ms 25172 KB Output is correct
5 Correct 48 ms 24912 KB Output is correct
6 Correct 40 ms 24872 KB Output is correct

Subtask #2
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 33 ms 24660 KB Output is correct
2 Correct 46 ms 25048 KB Output is correct
3 Correct 51 ms 24904 KB Output is correct
4 Correct 55 ms 25172 KB Output is correct
5 Correct 48 ms 24912 KB Output is correct
6 Correct 40 ms 24872 KB Output is correct
7 Correct 38 ms 24620 KB Output is correct
8 Correct 47 ms 24704 KB Output is correct
9 Correct 49 ms 25652 KB Output is correct
10 Correct 50 ms 25956 KB Output is correct
11 Correct 51 ms 25696 KB Output is correct
12 Correct 48 ms 25500 KB Output is correct

Subtask #3
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 33 ms 24788 KB Output is correct
2 Correct 169 ms 34496 KB Output is correct
3 Correct 199 ms 34332 KB Output is correct

Subtask #4
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 33 ms 24788 KB Output is correct
2 Correct 169 ms 34496 KB Output is correct
3 Correct 199 ms 34332 KB Output is correct
4 Correct 40 ms 24760 KB Output is correct
5 Correct 178 ms 34136 KB Output is correct
6 Correct 121 ms 34560 KB Output is correct
7 Correct 135 ms 34688 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 24708 KB Output is correct
2 Correct 397 ms 41508 KB Output is correct
3 Correct 389 ms 41548 KB Output is correct
4 Correct 258 ms 42444 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 24708 KB Output is correct
2 Correct 397 ms 41508 KB Output is correct
3 Correct 389 ms 41548 KB Output is correct
4 Correct 258 ms 42444 KB Output is correct
5 Correct 35 ms 24652 KB Output is correct
6 Correct 400 ms 42144 KB Output is correct
7 Correct 285 ms 45896 KB Output is correct
8 Correct 385 ms 44568 KB Output is correct
9 Correct 482 ms 44528 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 24640 KB Output is correct
2 Correct 265 ms 33784 KB Output is correct
3 Correct 322 ms 32848 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 24640 KB Output is correct
2 Correct 265 ms 33784 KB Output is correct
3 Correct 322 ms 32848 KB Output is correct
4 Correct 36 ms 24724 KB Output is correct
5 Correct 283 ms 34296 KB Output is correct
6 Correct 324 ms 36240 KB Output is correct

Subtask #9
12.5 / 12.5

# Verdict Execution time Memory Grader output
1 Correct 32 ms 24692 KB Output is correct
2 Correct 446 ms 41548 KB Output is correct
3 Correct 428 ms 41444 KB Output is correct
4 Correct 267 ms 42576 KB Output is correct
5 Correct 34 ms 24704 KB Output is correct
6 Correct 267 ms 33864 KB Output is correct
7 Correct 311 ms 32876 KB Output is correct
8 Correct 356 ms 33912 KB Output is correct
9 Correct 374 ms 33956 KB Output is correct
10 Correct 427 ms 37580 KB Output is correct
11 Correct 446 ms 36300 KB Output is correct

Subtask #10
12.5 / 12.5

# Verdict Execution time Memory Grader output
1 Correct 32 ms 24692 KB Output is correct
2 Correct 446 ms 41548 KB Output is correct
3 Correct 428 ms 41444 KB Output is correct
4 Correct 267 ms 42576 KB Output is correct
5 Correct 34 ms 24704 KB Output is correct
6 Correct 267 ms 33864 KB Output is correct
7 Correct 311 ms 32876 KB Output is correct
8 Correct 356 ms 33912 KB Output is correct
9 Correct 374 ms 33956 KB Output is correct
10 Correct 427 ms 37580 KB Output is correct
11 Correct 446 ms 36300 KB Output is correct
12 Correct 33 ms 24708 KB Output is correct
13 Correct 428 ms 42052 KB Output is correct
14 Correct 270 ms 45988 KB Output is correct
15 Correct 429 ms 44520 KB Output is correct
16 Correct 459 ms 44560 KB Output is correct
17 Correct 38 ms 25500 KB Output is correct
18 Correct 265 ms 37300 KB Output is correct
19 Correct 340 ms 36260 KB Output is correct
20 Correct 352 ms 37312 KB Output is correct
21 Correct 368 ms 37512 KB Output is correct
22 Correct 404 ms 39868 KB Output is correct
23 Correct 583 ms 40452 KB Output is correct
24 Correct 528 ms 39892 KB Output is correct

Subtask #11
17.5 / 17.5

# Verdict Execution time Memory Grader output
1 Correct 32 ms 24660 KB Output is correct
2 Correct 44 ms 25120 KB Output is correct
3 Correct 40 ms 24840 KB Output is correct
4 Correct 48 ms 25164 KB Output is correct
5 Correct 45 ms 24908 KB Output is correct
6 Correct 43 ms 24844 KB Output is correct
7 Correct 32 ms 24748 KB Output is correct
8 Correct 182 ms 34364 KB Output is correct
9 Correct 170 ms 34368 KB Output is correct
10 Correct 33 ms 24640 KB Output is correct
11 Correct 364 ms 41548 KB Output is correct
12 Correct 384 ms 41492 KB Output is correct
13 Correct 250 ms 42456 KB Output is correct
14 Correct 32 ms 24640 KB Output is correct
15 Correct 252 ms 33928 KB Output is correct
16 Correct 308 ms 32904 KB Output is correct
17 Correct 374 ms 33916 KB Output is correct
18 Correct 336 ms 33952 KB Output is correct
19 Correct 397 ms 37496 KB Output is correct
20 Correct 445 ms 36248 KB Output is correct
21 Correct 197 ms 34508 KB Output is correct
22 Correct 221 ms 33948 KB Output is correct
23 Correct 265 ms 33852 KB Output is correct
24 Correct 296 ms 33904 KB Output is correct
25 Correct 474 ms 37988 KB Output is correct
26 Correct 340 ms 31732 KB Output is correct
27 Correct 287 ms 31472 KB Output is correct

Subtask #12
17.5 / 17.5

# Verdict Execution time Memory Grader output
1 Correct 32 ms 24660 KB Output is correct
2 Correct 44 ms 25120 KB Output is correct
3 Correct 40 ms 24840 KB Output is correct
4 Correct 48 ms 25164 KB Output is correct
5 Correct 45 ms 24908 KB Output is correct
6 Correct 43 ms 24844 KB Output is correct
7 Correct 32 ms 24748 KB Output is correct
8 Correct 182 ms 34364 KB Output is correct
9 Correct 170 ms 34368 KB Output is correct
10 Correct 33 ms 24640 KB Output is correct
11 Correct 364 ms 41548 KB Output is correct
12 Correct 384 ms 41492 KB Output is correct
13 Correct 250 ms 42456 KB Output is correct
14 Correct 32 ms 24640 KB Output is correct
15 Correct 252 ms 33928 KB Output is correct
16 Correct 308 ms 32904 KB Output is correct
17 Correct 374 ms 33916 KB Output is correct
18 Correct 336 ms 33952 KB Output is correct
19 Correct 397 ms 37496 KB Output is correct
20 Correct 445 ms 36248 KB Output is correct
21 Correct 197 ms 34508 KB Output is correct
22 Correct 221 ms 33948 KB Output is correct
23 Correct 265 ms 33852 KB Output is correct
24 Correct 296 ms 33904 KB Output is correct
25 Correct 474 ms 37988 KB Output is correct
26 Correct 340 ms 31732 KB Output is correct
27 Correct 287 ms 31472 KB Output is correct
28 Correct 36 ms 24632 KB Output is correct
29 Correct 48 ms 24736 KB Output is correct
30 Correct 42 ms 25700 KB Output is correct
31 Correct 51 ms 25980 KB Output is correct
32 Correct 50 ms 25676 KB Output is correct
33 Correct 42 ms 25572 KB Output is correct
34 Correct 33 ms 25560 KB Output is correct
35 Correct 174 ms 36928 KB Output is correct
36 Correct 107 ms 34624 KB Output is correct
37 Correct 114 ms 34840 KB Output is correct
38 Correct 34 ms 25548 KB Output is correct
39 Correct 419 ms 44996 KB Output is correct
40 Correct 300 ms 46076 KB Output is correct
41 Correct 408 ms 44552 KB Output is correct
42 Correct 394 ms 44464 KB Output is correct
43 Correct 34 ms 25572 KB Output is correct
44 Correct 275 ms 37344 KB Output is correct
45 Correct 315 ms 36380 KB Output is correct
46 Correct 357 ms 37396 KB Output is correct
47 Correct 433 ms 37564 KB Output is correct
48 Correct 395 ms 39772 KB Output is correct
49 Correct 589 ms 40376 KB Output is correct
50 Correct 515 ms 39872 KB Output is correct
51 Correct 147 ms 36048 KB Output is correct
52 Correct 119 ms 35576 KB Output is correct
53 Correct 117 ms 35136 KB Output is correct
54 Correct 163 ms 35716 KB Output is correct
55 Correct 122 ms 35020 KB Output is correct
56 Correct 269 ms 36292 KB Output is correct
57 Correct 379 ms 39204 KB Output is correct
58 Correct 441 ms 35788 KB Output is correct
59 Correct 298 ms 34968 KB Output is correct