oj.uz

Submission #1093541

# Submission time Handle Problem Language Result Execution time Memory
1093541 2024-09-27T02:49:25 Z ntdaccode Joker (BOI20_joker) C++17
39 / 100
 2000 ms 69604 KB 
#include<bits/stdc++.h>
#define fori(i,a,b) for(int i=a;i<=b;i++)
#define int long long
#define ii pair<int,int>
#define fi first
#define se second
#define pb push_back
using namespace std;
const int mod=1e9+7;
const int M=1e6+10;
const int N=1e3+10;
int n,m,q;
int x[M],y[M];
vector<int> ke[M];
int dd[M];
bool dfs(int u,int p)
{
  for(int v:ke[u])
  {
    if(v==p) continue;

    if(dd[v])
    {
      //cout << dd[v] << " " << dd[u] << "\n";
      if(dd[v]%2==dd[u]%2) return true;
    }
    else
    {
      dd[v]=dd[u]+1;
      if(dfs(v,u)) return true;
    }
  }
  return false;
}
bool check(int mid,int idx)
{
  fori(i,1,idx-1)
  {
    if(x[i]==y[i]) continue;
    ke[x[i]].pb(y[i]);
    ke[y[i]].pb(x[i]);//if(mid==5) cout << x[i] <<" " <<  y[i] << "\n";
  }
  for(int i=mid+1;i<=m;i++)
  {
    if(x[i]==y[i]) continue;
    ke[x[i]].pb(y[i]);//if(mid==5) cout << x[i] <<" " <<  y[i] << "\n";
    ke[y[i]].pb(x[i]);
  }
   fori(i,1,n) dd[i]=0;
    bool ok=0;
    fori(i,1,n)
    {
      if(!dd[i])
      {
        dd[i]=1;
        if(dfs(i,i))
        {
          ok=1;
          break;
        }
      }
    }
    //cout << ok << " ";
    fori(i,1,n) ke[i].clear();
    return ok;
}
vector<ii> Q[M];
int ret[M];
int32_t main()
{
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  #define task "1"
  if(fopen(task".inp","r"))
  {
    freopen(task".inp","r",stdin);
    freopen(task".out","w",stdout);
  }
  cin >> n >> m >> q;
  fori(i,1,m) cin >> x[i] >> y[i];
  int mx=0;
  fori(i,1,q)
  {
    int l,r;
    cin >> l >> r;
    Q[l].pb({r,i});
    mx=max(mx,l);
  }
 // check(5,4) ;return 0;
  fori(i,1,mx)
  {
    if(Q[i].size()==0) continue;
    int l=i,r=m,lim=0;
    while(l<=r)
    {
      int mid=(l+r)/2;
      if(check(mid,i))
      {
        lim=mid;
        l=mid+1;
      }
      else r=mid-1;
    }
    //cout << lim << " ";
    for(ii v:Q[i]) ret[v.se]=(v.fi<=lim) ;
  }
  fori(i,1,q)
  {
    if(ret[i]) cout << "YES\n";
    else cout << "NO\n";
  }
}

Compilation message

Joker.cpp: In function 'int32_t main()':
Joker.cpp:77:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |     freopen(task".inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:78:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |     freopen(task".out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47308 KB Output is correct
2 Correct 25 ms 47328 KB Output is correct
3 Correct 20 ms 47452 KB Output is correct
4 Correct 19 ms 47288 KB Output is correct
5 Correct 19 ms 47452 KB Output is correct
6 Correct 20 ms 47452 KB Output is correct
7 Correct 20 ms 47452 KB Output is correct
8 Correct 21 ms 47376 KB Output is correct
9 Correct 20 ms 47452 KB Output is correct
10 Correct 20 ms 47452 KB Output is correct
11 Correct 20 ms 47424 KB Output is correct
12 Correct 26 ms 47352 KB Output is correct
13 Correct 21 ms 47452 KB Output is correct
14 Correct 21 ms 47232 KB Output is correct
15 Correct 21 ms 47452 KB Output is correct
16 Correct 20 ms 47452 KB Output is correct
17 Correct 22 ms 47452 KB Output is correct
18 Correct 20 ms 47448 KB Output is correct
19 Correct 23 ms 47452 KB Output is correct
20 Correct 22 ms 47452 KB Output is correct
21 Correct 22 ms 47296 KB Output is correct
22 Correct 22 ms 47448 KB Output is correct
23 Correct 23 ms 47452 KB Output is correct
24 Correct 31 ms 47400 KB Output is correct
25 Correct 24 ms 47452 KB Output is correct
26 Correct 23 ms 47448 KB Output is correct
27 Correct 22 ms 47452 KB Output is correct
28 Correct 23 ms 47488 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47308 KB Output is correct
2 Correct 25 ms 47328 KB Output is correct
3 Correct 20 ms 47452 KB Output is correct
4 Correct 19 ms 47288 KB Output is correct
5 Correct 19 ms 47452 KB Output is correct
6 Correct 20 ms 47452 KB Output is correct
7 Correct 20 ms 47452 KB Output is correct
8 Correct 21 ms 47376 KB Output is correct
9 Correct 20 ms 47452 KB Output is correct
10 Correct 20 ms 47452 KB Output is correct
11 Correct 20 ms 47424 KB Output is correct
12 Correct 26 ms 47352 KB Output is correct
13 Correct 21 ms 47452 KB Output is correct
14 Correct 21 ms 47232 KB Output is correct
15 Correct 21 ms 47452 KB Output is correct
16 Correct 20 ms 47452 KB Output is correct
17 Correct 22 ms 47452 KB Output is correct
18 Correct 20 ms 47448 KB Output is correct
19 Correct 23 ms 47452 KB Output is correct
20 Correct 22 ms 47452 KB Output is correct
21 Correct 22 ms 47296 KB Output is correct
22 Correct 22 ms 47448 KB Output is correct
23 Correct 23 ms 47452 KB Output is correct
24 Correct 31 ms 47400 KB Output is correct
25 Correct 24 ms 47452 KB Output is correct
26 Correct 23 ms 47448 KB Output is correct
27 Correct 22 ms 47452 KB Output is correct
28 Correct 23 ms 47488 KB Output is correct
29 Correct 122 ms 47452 KB Output is correct
30 Correct 138 ms 47476 KB Output is correct
31 Correct 134 ms 47460 KB Output is correct
32 Correct 100 ms 47652 KB Output is correct
33 Correct 78 ms 47452 KB Output is correct
34 Correct 137 ms 47448 KB Output is correct
35 Correct 163 ms 47660 KB Output is correct
36 Correct 179 ms 47676 KB Output is correct
37 Correct 276 ms 47704 KB Output is correct
38 Correct 314 ms 47648 KB Output is correct
39 Correct 128 ms 47652 KB Output is correct
40 Correct 136 ms 47452 KB Output is correct
41 Correct 131 ms 47660 KB Output is correct
42 Correct 129 ms 47448 KB Output is correct
43 Correct 87 ms 47452 KB Output is correct
44 Correct 106 ms 47452 KB Output is correct
45 Correct 132 ms 47660 KB Output is correct
46 Correct 151 ms 47448 KB Output is correct
47 Correct 137 ms 47452 KB Output is correct
48 Correct 139 ms 47664 KB Output is correct
49 Correct 152 ms 47704 KB Output is correct
50 Correct 180 ms 47672 KB Output is correct
51 Correct 94 ms 47448 KB Output is correct
52 Correct 102 ms 47452 KB Output is correct
53 Correct 117 ms 47448 KB Output is correct
54 Correct 152 ms 47664 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47308 KB Output is correct
2 Correct 25 ms 47328 KB Output is correct
3 Correct 132 ms 67772 KB Output is correct
4 Correct 211 ms 69604 KB Output is correct
5 Correct 117 ms 65248 KB Output is correct
6 Correct 121 ms 66492 KB Output is correct
7 Correct 117 ms 66020 KB Output is correct
8 Correct 104 ms 65884 KB Output is correct
9 Correct 125 ms 66240 KB Output is correct
10 Correct 160 ms 67148 KB Output is correct
11 Correct 118 ms 65536 KB Output is correct
12 Correct 135 ms 67052 KB Output is correct
13 Correct 91 ms 64960 KB Output is correct
14 Correct 101 ms 66328 KB Output is correct
15 Correct 131 ms 67004 KB Output is correct
16 Correct 159 ms 67512 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47308 KB Output is correct
2 Correct 25 ms 47328 KB Output is correct
3 Correct 20 ms 47452 KB Output is correct
4 Correct 19 ms 47288 KB Output is correct
5 Correct 19 ms 47452 KB Output is correct
6 Correct 20 ms 47452 KB Output is correct
7 Correct 20 ms 47452 KB Output is correct
8 Correct 21 ms 47376 KB Output is correct
9 Correct 20 ms 47452 KB Output is correct
10 Correct 20 ms 47452 KB Output is correct
11 Correct 20 ms 47424 KB Output is correct
12 Correct 26 ms 47352 KB Output is correct
13 Correct 21 ms 47452 KB Output is correct
14 Correct 21 ms 47232 KB Output is correct
15 Correct 21 ms 47452 KB Output is correct
16 Correct 20 ms 47452 KB Output is correct
17 Correct 22 ms 47452 KB Output is correct
18 Correct 20 ms 47448 KB Output is correct
19 Correct 23 ms 47452 KB Output is correct
20 Correct 22 ms 47452 KB Output is correct
21 Correct 22 ms 47296 KB Output is correct
22 Correct 22 ms 47448 KB Output is correct
23 Correct 23 ms 47452 KB Output is correct
24 Correct 31 ms 47400 KB Output is correct
25 Correct 24 ms 47452 KB Output is correct
26 Correct 23 ms 47448 KB Output is correct
27 Correct 22 ms 47452 KB Output is correct
28 Correct 23 ms 47488 KB Output is correct
29 Correct 132 ms 67772 KB Output is correct
30 Correct 211 ms 69604 KB Output is correct
31 Correct 117 ms 65248 KB Output is correct
32 Correct 121 ms 66492 KB Output is correct
33 Correct 117 ms 66020 KB Output is correct
34 Correct 104 ms 65884 KB Output is correct
35 Correct 125 ms 66240 KB Output is correct
36 Correct 160 ms 67148 KB Output is correct
37 Correct 118 ms 65536 KB Output is correct
38 Correct 135 ms 67052 KB Output is correct
39 Correct 91 ms 64960 KB Output is correct
40 Correct 101 ms 66328 KB Output is correct
41 Correct 131 ms 67004 KB Output is correct
42 Correct 159 ms 67512 KB Output is correct
43 Execution timed out 2068 ms 69364 KB Time limit exceeded
44 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47308 KB Output is correct
2 Correct 25 ms 47328 KB Output is correct
3 Correct 20 ms 47452 KB Output is correct
4 Correct 19 ms 47288 KB Output is correct
5 Correct 19 ms 47452 KB Output is correct
6 Correct 20 ms 47452 KB Output is correct
7 Correct 20 ms 47452 KB Output is correct
8 Correct 21 ms 47376 KB Output is correct
9 Correct 20 ms 47452 KB Output is correct
10 Correct 20 ms 47452 KB Output is correct
11 Correct 20 ms 47424 KB Output is correct
12 Correct 26 ms 47352 KB Output is correct
13 Correct 21 ms 47452 KB Output is correct
14 Correct 21 ms 47232 KB Output is correct
15 Correct 21 ms 47452 KB Output is correct
16 Correct 20 ms 47452 KB Output is correct
17 Correct 22 ms 47452 KB Output is correct
18 Correct 20 ms 47448 KB Output is correct
19 Correct 23 ms 47452 KB Output is correct
20 Correct 22 ms 47452 KB Output is correct
21 Correct 22 ms 47296 KB Output is correct
22 Correct 22 ms 47448 KB Output is correct
23 Correct 23 ms 47452 KB Output is correct
24 Correct 31 ms 47400 KB Output is correct
25 Correct 24 ms 47452 KB Output is correct
26 Correct 23 ms 47448 KB Output is correct
27 Correct 22 ms 47452 KB Output is correct
28 Correct 23 ms 47488 KB Output is correct
29 Correct 122 ms 47452 KB Output is correct
30 Correct 138 ms 47476 KB Output is correct
31 Correct 134 ms 47460 KB Output is correct
32 Correct 100 ms 47652 KB Output is correct
33 Correct 78 ms 47452 KB Output is correct
34 Correct 137 ms 47448 KB Output is correct
35 Correct 163 ms 47660 KB Output is correct
36 Correct 179 ms 47676 KB Output is correct
37 Correct 276 ms 47704 KB Output is correct
38 Correct 314 ms 47648 KB Output is correct
39 Correct 128 ms 47652 KB Output is correct
40 Correct 136 ms 47452 KB Output is correct
41 Correct 131 ms 47660 KB Output is correct
42 Correct 129 ms 47448 KB Output is correct
43 Correct 87 ms 47452 KB Output is correct
44 Correct 106 ms 47452 KB Output is correct
45 Correct 132 ms 47660 KB Output is correct
46 Correct 151 ms 47448 KB Output is correct
47 Correct 137 ms 47452 KB Output is correct
48 Correct 139 ms 47664 KB Output is correct
49 Correct 152 ms 47704 KB Output is correct
50 Correct 180 ms 47672 KB Output is correct
51 Correct 94 ms 47448 KB Output is correct
52 Correct 102 ms 47452 KB Output is correct
53 Correct 117 ms 47448 KB Output is correct
54 Correct 152 ms 47664 KB Output is correct
55 Execution timed out 2040 ms 59472 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 47308 KB Output is correct
2 Correct 25 ms 47328 KB Output is correct
3 Correct 20 ms 47452 KB Output is correct
4 Correct 19 ms 47288 KB Output is correct
5 Correct 19 ms 47452 KB Output is correct
6 Correct 20 ms 47452 KB Output is correct
7 Correct 20 ms 47452 KB Output is correct
8 Correct 21 ms 47376 KB Output is correct
9 Correct 20 ms 47452 KB Output is correct
10 Correct 20 ms 47452 KB Output is correct
11 Correct 20 ms 47424 KB Output is correct
12 Correct 26 ms 47352 KB Output is correct
13 Correct 21 ms 47452 KB Output is correct
14 Correct 21 ms 47232 KB Output is correct
15 Correct 21 ms 47452 KB Output is correct
16 Correct 20 ms 47452 KB Output is correct
17 Correct 22 ms 47452 KB Output is correct
18 Correct 20 ms 47448 KB Output is correct
19 Correct 23 ms 47452 KB Output is correct
20 Correct 22 ms 47452 KB Output is correct
21 Correct 22 ms 47296 KB Output is correct
22 Correct 22 ms 47448 KB Output is correct
23 Correct 23 ms 47452 KB Output is correct
24 Correct 31 ms 47400 KB Output is correct
25 Correct 24 ms 47452 KB Output is correct
26 Correct 23 ms 47448 KB Output is correct
27 Correct 22 ms 47452 KB Output is correct
28 Correct 23 ms 47488 KB Output is correct
29 Correct 122 ms 47452 KB Output is correct
30 Correct 138 ms 47476 KB Output is correct
31 Correct 134 ms 47460 KB Output is correct
32 Correct 100 ms 47652 KB Output is correct
33 Correct 78 ms 47452 KB Output is correct
34 Correct 137 ms 47448 KB Output is correct
35 Correct 163 ms 47660 KB Output is correct
36 Correct 179 ms 47676 KB Output is correct
37 Correct 276 ms 47704 KB Output is correct
38 Correct 314 ms 47648 KB Output is correct
39 Correct 128 ms 47652 KB Output is correct
40 Correct 136 ms 47452 KB Output is correct
41 Correct 131 ms 47660 KB Output is correct
42 Correct 129 ms 47448 KB Output is correct
43 Correct 87 ms 47452 KB Output is correct
44 Correct 106 ms 47452 KB Output is correct
45 Correct 132 ms 47660 KB Output is correct
46 Correct 151 ms 47448 KB Output is correct
47 Correct 137 ms 47452 KB Output is correct
48 Correct 139 ms 47664 KB Output is correct
49 Correct 152 ms 47704 KB Output is correct
50 Correct 180 ms 47672 KB Output is correct
51 Correct 94 ms 47448 KB Output is correct
52 Correct 102 ms 47452 KB Output is correct
53 Correct 117 ms 47448 KB Output is correct
54 Correct 152 ms 47664 KB Output is correct
55 Correct 132 ms 67772 KB Output is correct
56 Correct 211 ms 69604 KB Output is correct
57 Correct 117 ms 65248 KB Output is correct
58 Correct 121 ms 66492 KB Output is correct
59 Correct 117 ms 66020 KB Output is correct
60 Correct 104 ms 65884 KB Output is correct
61 Correct 125 ms 66240 KB Output is correct
62 Correct 160 ms 67148 KB Output is correct
63 Correct 118 ms 65536 KB Output is correct
64 Correct 135 ms 67052 KB Output is correct
65 Correct 91 ms 64960 KB Output is correct
66 Correct 101 ms 66328 KB Output is correct
67 Correct 131 ms 67004 KB Output is correct
68 Correct 159 ms 67512 KB Output is correct
69 Execution timed out 2068 ms 69364 KB Time limit exceeded
70 Halted 0 ms 0 KB -