oj.uz

Submission #255915

# Submission time Handle Problem Language Result Execution time Memory
255915 2020-08-02T05:41:17 Z 반딧불(#5032) Joker (BOI20_joker) C++17
14 / 100
 2000 ms 14516 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")

using namespace std;

typedef long long ll;

struct dat{
    int s, e, i;
    dat(){}
    dat(int s, int e, int i): s(s), e(e), i(i){}
};
vector<dat> link[200002];

int n, m, q;
int l, r;

int chk[200002];

bool dfs(int x, int y = 1){
    chk[x] = y;
    for(auto &nxt: link[x]){
        if(l <= nxt.i && nxt.i <= r) continue;
        if(chk[nxt.e] == y) return true;
        if(chk[nxt.e] == 0 && dfs(nxt.e, 3-y)) return true;
    }
    return false;
}

int main(){
    scanf("%d %d %d", &n, &m, &q);
    for(int i=1; i<=m; i++){
        int s, e;
        scanf("%d %d", &s, &e);
        link[s].push_back(dat(s, e, i));
        link[e].push_back(dat(e, s, i));
    }

    while(q--){
        scanf("%d %d", &l, &r);
        memset(chk, 0, sizeof(chk));

        bool possible = 0;
        for(int i=1; i<=n; i++){
            if(!chk[i] && dfs(i)){
                possible = 1;
                break;
            }
        }
        printf("%s\n", possible ? "YES" : "NO");
    }
}

Compilation message

Joker.cpp: In function 'int main()':
Joker.cpp:32:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &n, &m, &q);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:35:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &s, &e);
         ~~~~~^~~~~~~~~~~~~~~~~
Joker.cpp:41:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &l, &r);
         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5760 KB Output is correct
2 Correct 3 ms 5760 KB Output is correct
3 Correct 4 ms 5760 KB Output is correct
4 Correct 4 ms 5760 KB Output is correct
5 Correct 5 ms 5760 KB Output is correct
6 Correct 4 ms 5760 KB Output is correct
7 Correct 9 ms 5760 KB Output is correct
8 Correct 9 ms 5760 KB Output is correct
9 Correct 8 ms 5760 KB Output is correct
10 Correct 10 ms 5760 KB Output is correct
11 Correct 9 ms 5760 KB Output is correct
12 Correct 9 ms 5760 KB Output is correct
13 Correct 9 ms 5888 KB Output is correct
14 Correct 8 ms 5760 KB Output is correct
15 Correct 9 ms 5760 KB Output is correct
16 Correct 10 ms 5760 KB Output is correct
17 Correct 8 ms 5760 KB Output is correct
18 Correct 10 ms 5760 KB Output is correct
19 Correct 13 ms 5760 KB Output is correct
20 Correct 8 ms 5760 KB Output is correct
21 Correct 10 ms 5760 KB Output is correct
22 Correct 8 ms 5760 KB Output is correct
23 Correct 8 ms 5760 KB Output is correct
24 Correct 9 ms 5760 KB Output is correct
25 Correct 10 ms 5760 KB Output is correct
26 Correct 9 ms 5760 KB Output is correct
27 Correct 10 ms 5760 KB Output is correct
28 Correct 9 ms 5760 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5760 KB Output is correct
2 Correct 3 ms 5760 KB Output is correct
3 Correct 4 ms 5760 KB Output is correct
4 Correct 4 ms 5760 KB Output is correct
5 Correct 5 ms 5760 KB Output is correct
6 Correct 4 ms 5760 KB Output is correct
7 Correct 9 ms 5760 KB Output is correct
8 Correct 9 ms 5760 KB Output is correct
9 Correct 8 ms 5760 KB Output is correct
10 Correct 10 ms 5760 KB Output is correct
11 Correct 9 ms 5760 KB Output is correct
12 Correct 9 ms 5760 KB Output is correct
13 Correct 9 ms 5888 KB Output is correct
14 Correct 8 ms 5760 KB Output is correct
15 Correct 9 ms 5760 KB Output is correct
16 Correct 10 ms 5760 KB Output is correct
17 Correct 8 ms 5760 KB Output is correct
18 Correct 10 ms 5760 KB Output is correct
19 Correct 13 ms 5760 KB Output is correct
20 Correct 8 ms 5760 KB Output is correct
21 Correct 10 ms 5760 KB Output is correct
22 Correct 8 ms 5760 KB Output is correct
23 Correct 8 ms 5760 KB Output is correct
24 Correct 9 ms 5760 KB Output is correct
25 Correct 10 ms 5760 KB Output is correct
26 Correct 9 ms 5760 KB Output is correct
27 Correct 10 ms 5760 KB Output is correct
28 Correct 9 ms 5760 KB Output is correct
29 Correct 117 ms 5888 KB Output is correct
30 Correct 105 ms 5888 KB Output is correct
31 Correct 92 ms 5928 KB Output is correct
32 Correct 70 ms 5888 KB Output is correct
33 Correct 59 ms 5888 KB Output is correct
34 Correct 87 ms 5932 KB Output is correct
35 Correct 108 ms 6008 KB Output is correct
36 Correct 68 ms 5888 KB Output is correct
37 Correct 113 ms 5888 KB Output is correct
38 Correct 123 ms 5928 KB Output is correct
39 Correct 106 ms 5888 KB Output is correct
40 Correct 90 ms 5888 KB Output is correct
41 Correct 88 ms 5888 KB Output is correct
42 Correct 76 ms 5940 KB Output is correct
43 Correct 58 ms 5888 KB Output is correct
44 Correct 61 ms 5888 KB Output is correct
45 Correct 58 ms 5888 KB Output is correct
46 Correct 82 ms 5888 KB Output is correct
47 Correct 78 ms 5888 KB Output is correct
48 Correct 77 ms 5888 KB Output is correct
49 Correct 86 ms 5888 KB Output is correct
50 Correct 100 ms 5920 KB Output is correct
51 Correct 75 ms 5888 KB Output is correct
52 Correct 82 ms 5888 KB Output is correct
53 Correct 93 ms 5888 KB Output is correct
54 Correct 105 ms 6008 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5760 KB Output is correct
2 Correct 3 ms 5760 KB Output is correct
3 Execution timed out 2099 ms 13944 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5760 KB Output is correct
2 Correct 3 ms 5760 KB Output is correct
3 Correct 4 ms 5760 KB Output is correct
4 Correct 4 ms 5760 KB Output is correct
5 Correct 5 ms 5760 KB Output is correct
6 Correct 4 ms 5760 KB Output is correct
7 Correct 9 ms 5760 KB Output is correct
8 Correct 9 ms 5760 KB Output is correct
9 Correct 8 ms 5760 KB Output is correct
10 Correct 10 ms 5760 KB Output is correct
11 Correct 9 ms 5760 KB Output is correct
12 Correct 9 ms 5760 KB Output is correct
13 Correct 9 ms 5888 KB Output is correct
14 Correct 8 ms 5760 KB Output is correct
15 Correct 9 ms 5760 KB Output is correct
16 Correct 10 ms 5760 KB Output is correct
17 Correct 8 ms 5760 KB Output is correct
18 Correct 10 ms 5760 KB Output is correct
19 Correct 13 ms 5760 KB Output is correct
20 Correct 8 ms 5760 KB Output is correct
21 Correct 10 ms 5760 KB Output is correct
22 Correct 8 ms 5760 KB Output is correct
23 Correct 8 ms 5760 KB Output is correct
24 Correct 9 ms 5760 KB Output is correct
25 Correct 10 ms 5760 KB Output is correct
26 Correct 9 ms 5760 KB Output is correct
27 Correct 10 ms 5760 KB Output is correct
28 Correct 9 ms 5760 KB Output is correct
29 Execution timed out 2099 ms 13944 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5760 KB Output is correct
2 Correct 3 ms 5760 KB Output is correct
3 Correct 4 ms 5760 KB Output is correct
4 Correct 4 ms 5760 KB Output is correct
5 Correct 5 ms 5760 KB Output is correct
6 Correct 4 ms 5760 KB Output is correct
7 Correct 9 ms 5760 KB Output is correct
8 Correct 9 ms 5760 KB Output is correct
9 Correct 8 ms 5760 KB Output is correct
10 Correct 10 ms 5760 KB Output is correct
11 Correct 9 ms 5760 KB Output is correct
12 Correct 9 ms 5760 KB Output is correct
13 Correct 9 ms 5888 KB Output is correct
14 Correct 8 ms 5760 KB Output is correct
15 Correct 9 ms 5760 KB Output is correct
16 Correct 10 ms 5760 KB Output is correct
17 Correct 8 ms 5760 KB Output is correct
18 Correct 10 ms 5760 KB Output is correct
19 Correct 13 ms 5760 KB Output is correct
20 Correct 8 ms 5760 KB Output is correct
21 Correct 10 ms 5760 KB Output is correct
22 Correct 8 ms 5760 KB Output is correct
23 Correct 8 ms 5760 KB Output is correct
24 Correct 9 ms 5760 KB Output is correct
25 Correct 10 ms 5760 KB Output is correct
26 Correct 9 ms 5760 KB Output is correct
27 Correct 10 ms 5760 KB Output is correct
28 Correct 9 ms 5760 KB Output is correct
29 Correct 117 ms 5888 KB Output is correct
30 Correct 105 ms 5888 KB Output is correct
31 Correct 92 ms 5928 KB Output is correct
32 Correct 70 ms 5888 KB Output is correct
33 Correct 59 ms 5888 KB Output is correct
34 Correct 87 ms 5932 KB Output is correct
35 Correct 108 ms 6008 KB Output is correct
36 Correct 68 ms 5888 KB Output is correct
37 Correct 113 ms 5888 KB Output is correct
38 Correct 123 ms 5928 KB Output is correct
39 Correct 106 ms 5888 KB Output is correct
40 Correct 90 ms 5888 KB Output is correct
41 Correct 88 ms 5888 KB Output is correct
42 Correct 76 ms 5940 KB Output is correct
43 Correct 58 ms 5888 KB Output is correct
44 Correct 61 ms 5888 KB Output is correct
45 Correct 58 ms 5888 KB Output is correct
46 Correct 82 ms 5888 KB Output is correct
47 Correct 78 ms 5888 KB Output is correct
48 Correct 77 ms 5888 KB Output is correct
49 Correct 86 ms 5888 KB Output is correct
50 Correct 100 ms 5920 KB Output is correct
51 Correct 75 ms 5888 KB Output is correct
52 Correct 82 ms 5888 KB Output is correct
53 Correct 93 ms 5888 KB Output is correct
54 Correct 105 ms 6008 KB Output is correct
55 Execution timed out 2081 ms 14516 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5760 KB Output is correct
2 Correct 3 ms 5760 KB Output is correct
3 Correct 4 ms 5760 KB Output is correct
4 Correct 4 ms 5760 KB Output is correct
5 Correct 5 ms 5760 KB Output is correct
6 Correct 4 ms 5760 KB Output is correct
7 Correct 9 ms 5760 KB Output is correct
8 Correct 9 ms 5760 KB Output is correct
9 Correct 8 ms 5760 KB Output is correct
10 Correct 10 ms 5760 KB Output is correct
11 Correct 9 ms 5760 KB Output is correct
12 Correct 9 ms 5760 KB Output is correct
13 Correct 9 ms 5888 KB Output is correct
14 Correct 8 ms 5760 KB Output is correct
15 Correct 9 ms 5760 KB Output is correct
16 Correct 10 ms 5760 KB Output is correct
17 Correct 8 ms 5760 KB Output is correct
18 Correct 10 ms 5760 KB Output is correct
19 Correct 13 ms 5760 KB Output is correct
20 Correct 8 ms 5760 KB Output is correct
21 Correct 10 ms 5760 KB Output is correct
22 Correct 8 ms 5760 KB Output is correct
23 Correct 8 ms 5760 KB Output is correct
24 Correct 9 ms 5760 KB Output is correct
25 Correct 10 ms 5760 KB Output is correct
26 Correct 9 ms 5760 KB Output is correct
27 Correct 10 ms 5760 KB Output is correct
28 Correct 9 ms 5760 KB Output is correct
29 Correct 117 ms 5888 KB Output is correct
30 Correct 105 ms 5888 KB Output is correct
31 Correct 92 ms 5928 KB Output is correct
32 Correct 70 ms 5888 KB Output is correct
33 Correct 59 ms 5888 KB Output is correct
34 Correct 87 ms 5932 KB Output is correct
35 Correct 108 ms 6008 KB Output is correct
36 Correct 68 ms 5888 KB Output is correct
37 Correct 113 ms 5888 KB Output is correct
38 Correct 123 ms 5928 KB Output is correct
39 Correct 106 ms 5888 KB Output is correct
40 Correct 90 ms 5888 KB Output is correct
41 Correct 88 ms 5888 KB Output is correct
42 Correct 76 ms 5940 KB Output is correct
43 Correct 58 ms 5888 KB Output is correct
44 Correct 61 ms 5888 KB Output is correct
45 Correct 58 ms 5888 KB Output is correct
46 Correct 82 ms 5888 KB Output is correct
47 Correct 78 ms 5888 KB Output is correct
48 Correct 77 ms 5888 KB Output is correct
49 Correct 86 ms 5888 KB Output is correct
50 Correct 100 ms 5920 KB Output is correct
51 Correct 75 ms 5888 KB Output is correct
52 Correct 82 ms 5888 KB Output is correct
53 Correct 93 ms 5888 KB Output is correct
54 Correct 105 ms 6008 KB Output is correct
55 Execution timed out 2099 ms 13944 KB Time limit exceeded
56 Halted 0 ms 0 KB -