oj.uz

Submission #1093520

# Submission time Handle Problem Language Result Execution time Memory
1093520 2024-09-27T02:01:34 Z duyhoanho Joker (BOI20_joker) C++14
14 / 100
 2000 ms 16208 KB 
#include<bits/stdc++.h>
#define int long long
#define forinc(i,a,b) for(int i=a;i<=b;i++)
#define fi first
#define se second
#define pii pair<int,int>
#define pb push_back
using namespace std;
const int N = 2e5+10;
int n,m,q,fre[N];

pii a[N];
vector<int> ad[N];
bool qu(int l,int r)
{
    bool ok = 0;
    forinc(i,1,n) ad[i].clear();
    forinc(i,1,m)
    {
        if(l<=i && i<=r) continue;
        int x,y;
        tie(x,y) = a[i];
        ad[x].pb(y);
        ad[y].pb(x);
    }

    for(int i=1; i<=n; i++) fre[i] = -1;
    for(int i=1; i<=n; i++)
    {
        if(fre[i] == -1)
        {
            queue<int> q;
            q.push(i);
            fre[i] = 0;
            while(q.size())
            {
                int u = q.front();q.pop();
                for(int v:ad[u])
                {
                    if(fre[v] == fre[u]) return true;
                    if(fre[v] != -1) continue;
                    fre[v] = 1 - fre[u];
                    q.push(v);
                }

            }
            //if(ok == 1) return true;
        }
    }
    return false;
}
int32_t main()
{
    if(fopen("task.inp","r"))
    {
        freopen("task.inp","r",stdin);
        freopen("task.out","w",stdout);
    }
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>m>>q;
    forinc(i,1,m)
    {
        int x,y;
        cin>>x>>y;
        a[i] = {x,y};
    }
    while(q--)
    {
        int l,r;
        cin>>l>>r;
        cout<< (qu(l,r) ? "YES\n" : "NO\n");
    }


}

Compilation message

Joker.cpp: In function 'bool qu(long long int, long long int)':
Joker.cpp:16:10: warning: unused variable 'ok' [-Wunused-variable]
   16 |     bool ok = 0;
      |          ^~
Joker.cpp: In function 'int32_t main()':
Joker.cpp:56:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |         freopen("task.inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:57:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |         freopen("task.out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5144 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 3 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 3 ms 4952 KB Output is correct
11 Correct 3 ms 4956 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 3 ms 5164 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5164 KB Output is correct
20 Correct 3 ms 5164 KB Output is correct
21 Correct 3 ms 4956 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 3 ms 4956 KB Output is correct
24 Correct 3 ms 5168 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 4956 KB Output is correct
28 Correct 3 ms 5192 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5144 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 3 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 3 ms 4952 KB Output is correct
11 Correct 3 ms 4956 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 3 ms 5164 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5164 KB Output is correct
20 Correct 3 ms 5164 KB Output is correct
21 Correct 3 ms 4956 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 3 ms 4956 KB Output is correct
24 Correct 3 ms 5168 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 4956 KB Output is correct
28 Correct 3 ms 5192 KB Output is correct
29 Correct 94 ms 5464 KB Output is correct
30 Correct 69 ms 5304 KB Output is correct
31 Correct 49 ms 5212 KB Output is correct
32 Correct 27 ms 5212 KB Output is correct
33 Correct 18 ms 5252 KB Output is correct
34 Correct 54 ms 5208 KB Output is correct
35 Correct 70 ms 5208 KB Output is correct
36 Correct 38 ms 5208 KB Output is correct
37 Correct 92 ms 5224 KB Output is correct
38 Correct 77 ms 5304 KB Output is correct
39 Correct 72 ms 5172 KB Output is correct
40 Correct 38 ms 5212 KB Output is correct
41 Correct 40 ms 5208 KB Output is correct
42 Correct 37 ms 5212 KB Output is correct
43 Correct 18 ms 5212 KB Output is correct
44 Correct 21 ms 5300 KB Output is correct
45 Correct 25 ms 5212 KB Output is correct
46 Correct 30 ms 5208 KB Output is correct
47 Correct 34 ms 5212 KB Output is correct
48 Correct 36 ms 5212 KB Output is correct
49 Correct 56 ms 5212 KB Output is correct
50 Correct 71 ms 5208 KB Output is correct
51 Correct 28 ms 5208 KB Output is correct
52 Correct 38 ms 5320 KB Output is correct
53 Correct 49 ms 5212 KB Output is correct
54 Correct 66 ms 5212 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Execution timed out 2049 ms 13780 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5144 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 3 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 3 ms 4952 KB Output is correct
11 Correct 3 ms 4956 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 3 ms 5164 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5164 KB Output is correct
20 Correct 3 ms 5164 KB Output is correct
21 Correct 3 ms 4956 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 3 ms 4956 KB Output is correct
24 Correct 3 ms 5168 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 4956 KB Output is correct
28 Correct 3 ms 5192 KB Output is correct
29 Execution timed out 2049 ms 13780 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5144 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 3 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 3 ms 4952 KB Output is correct
11 Correct 3 ms 4956 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 3 ms 5164 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5164 KB Output is correct
20 Correct 3 ms 5164 KB Output is correct
21 Correct 3 ms 4956 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 3 ms 4956 KB Output is correct
24 Correct 3 ms 5168 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 4956 KB Output is correct
28 Correct 3 ms 5192 KB Output is correct
29 Correct 94 ms 5464 KB Output is correct
30 Correct 69 ms 5304 KB Output is correct
31 Correct 49 ms 5212 KB Output is correct
32 Correct 27 ms 5212 KB Output is correct
33 Correct 18 ms 5252 KB Output is correct
34 Correct 54 ms 5208 KB Output is correct
35 Correct 70 ms 5208 KB Output is correct
36 Correct 38 ms 5208 KB Output is correct
37 Correct 92 ms 5224 KB Output is correct
38 Correct 77 ms 5304 KB Output is correct
39 Correct 72 ms 5172 KB Output is correct
40 Correct 38 ms 5212 KB Output is correct
41 Correct 40 ms 5208 KB Output is correct
42 Correct 37 ms 5212 KB Output is correct
43 Correct 18 ms 5212 KB Output is correct
44 Correct 21 ms 5300 KB Output is correct
45 Correct 25 ms 5212 KB Output is correct
46 Correct 30 ms 5208 KB Output is correct
47 Correct 34 ms 5212 KB Output is correct
48 Correct 36 ms 5212 KB Output is correct
49 Correct 56 ms 5212 KB Output is correct
50 Correct 71 ms 5208 KB Output is correct
51 Correct 28 ms 5208 KB Output is correct
52 Correct 38 ms 5320 KB Output is correct
53 Correct 49 ms 5212 KB Output is correct
54 Correct 66 ms 5212 KB Output is correct
55 Execution timed out 2015 ms 16208 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5144 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 3 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 3 ms 4952 KB Output is correct
11 Correct 3 ms 4956 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 3 ms 5164 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5164 KB Output is correct
20 Correct 3 ms 5164 KB Output is correct
21 Correct 3 ms 4956 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 3 ms 4956 KB Output is correct
24 Correct 3 ms 5168 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 4956 KB Output is correct
28 Correct 3 ms 5192 KB Output is correct
29 Correct 94 ms 5464 KB Output is correct
30 Correct 69 ms 5304 KB Output is correct
31 Correct 49 ms 5212 KB Output is correct
32 Correct 27 ms 5212 KB Output is correct
33 Correct 18 ms 5252 KB Output is correct
34 Correct 54 ms 5208 KB Output is correct
35 Correct 70 ms 5208 KB Output is correct
36 Correct 38 ms 5208 KB Output is correct
37 Correct 92 ms 5224 KB Output is correct
38 Correct 77 ms 5304 KB Output is correct
39 Correct 72 ms 5172 KB Output is correct
40 Correct 38 ms 5212 KB Output is correct
41 Correct 40 ms 5208 KB Output is correct
42 Correct 37 ms 5212 KB Output is correct
43 Correct 18 ms 5212 KB Output is correct
44 Correct 21 ms 5300 KB Output is correct
45 Correct 25 ms 5212 KB Output is correct
46 Correct 30 ms 5208 KB Output is correct
47 Correct 34 ms 5212 KB Output is correct
48 Correct 36 ms 5212 KB Output is correct
49 Correct 56 ms 5212 KB Output is correct
50 Correct 71 ms 5208 KB Output is correct
51 Correct 28 ms 5208 KB Output is correct
52 Correct 38 ms 5320 KB Output is correct
53 Correct 49 ms 5212 KB Output is correct
54 Correct 66 ms 5212 KB Output is correct
55 Execution timed out 2049 ms 13780 KB Time limit exceeded
56 Halted 0 ms 0 KB -