oj.uz

Submission #23672

# Submission time Handle Problem Language Result Execution time Memory
23672 2017-05-18T16:38:32 Z rubabredwan Port Facility (JOI17_port_facility) C++14
22 / 100
 103 ms 19568 KB 
/*  Bismillahir Rahmanir Rahim  */

#include <bits/stdc++.h>

using namespace std;

const int N = 2005;

int n;
int st[N], en[N];
int vis[N], flag, col[N];
vector<int>g[N];

void dfs(int at){
    vis[at] = 1;
    for(auto u : g[at]){
        if(!vis[u]){
            col[u] = col[at] ^ 1;
            dfs(u);
        }
        if(col[u] == col[at]) flag = 1;
    }
}

int main(){
    scanf("%d", &n);
    for(int i=1;i<=n;i++) scanf("%d %d", &st[i], &en[i]);
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            if(st[j] < st[i] && st[i] < en[j] && en[i] > en[j]){
                g[i].push_back(j);
                g[j].push_back(i);
            }
        }
    }
    int comp = 0;
    for(int i=1;i<=n;i++){
        if(vis[i]) continue;
        col[i] = 0;
        dfs(i);
        ++comp;
    }
    if(flag) cout << 0 << endl;
    else{
        long long mod = 1e9 + 7;
        long long ret = 1LL;
        for(int i=1;i<=comp;i++){
            ret *= 2LL;
            ret %= mod;
        }
        cout << ret << endl;
    }
	return 0;
}

Compilation message

port_facility.cpp: In function 'int main()':
port_facility.cpp:26:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
                    ^
port_facility.cpp:27:57: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=1;i<=n;i++) scanf("%d %d", &st[i], &en[i]);
                                                         ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2096 KB Output is correct
2 Correct 0 ms 2096 KB Output is correct
3 Correct 0 ms 2096 KB Output is correct
4 Correct 0 ms 2096 KB Output is correct
5 Correct 0 ms 2096 KB Output is correct
6 Correct 0 ms 2096 KB Output is correct
7 Correct 0 ms 2096 KB Output is correct
8 Correct 0 ms 2096 KB Output is correct
9 Correct 0 ms 2096 KB Output is correct
10 Correct 0 ms 2096 KB Output is correct
11 Correct 0 ms 2096 KB Output is correct
12 Correct 0 ms 2096 KB Output is correct
13 Correct 0 ms 2096 KB Output is correct
14 Correct 0 ms 2096 KB Output is correct
15 Correct 0 ms 2096 KB Output is correct
16 Correct 0 ms 2096 KB Output is correct
17 Correct 0 ms 2096 KB Output is correct
18 Correct 0 ms 2096 KB Output is correct
19 Correct 0 ms 2096 KB Output is correct
20 Correct 0 ms 2096 KB Output is correct
21 Correct 0 ms 2096 KB Output is correct
22 Correct 0 ms 2096 KB Output is correct
23 Correct 0 ms 2096 KB Output is correct
24 Correct 0 ms 2096 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2096 KB Output is correct
2 Correct 0 ms 2096 KB Output is correct
3 Correct 0 ms 2096 KB Output is correct
4 Correct 0 ms 2096 KB Output is correct
5 Correct 0 ms 2096 KB Output is correct
6 Correct 0 ms 2096 KB Output is correct
7 Correct 0 ms 2096 KB Output is correct
8 Correct 0 ms 2096 KB Output is correct
9 Correct 0 ms 2096 KB Output is correct
10 Correct 0 ms 2096 KB Output is correct
11 Correct 0 ms 2096 KB Output is correct
12 Correct 0 ms 2096 KB Output is correct
13 Correct 0 ms 2096 KB Output is correct
14 Correct 0 ms 2096 KB Output is correct
15 Correct 0 ms 2096 KB Output is correct
16 Correct 0 ms 2096 KB Output is correct
17 Correct 0 ms 2096 KB Output is correct
18 Correct 0 ms 2096 KB Output is correct
19 Correct 0 ms 2096 KB Output is correct
20 Correct 0 ms 2096 KB Output is correct
21 Correct 0 ms 2096 KB Output is correct
22 Correct 0 ms 2096 KB Output is correct
23 Correct 0 ms 2096 KB Output is correct
24 Correct 0 ms 2096 KB Output is correct
25 Correct 26 ms 2360 KB Output is correct
26 Correct 33 ms 2492 KB Output is correct
27 Correct 29 ms 2360 KB Output is correct
28 Correct 26 ms 2624 KB Output is correct
29 Correct 29 ms 2492 KB Output is correct
30 Correct 29 ms 2624 KB Output is correct
31 Correct 29 ms 2492 KB Output is correct
32 Correct 33 ms 2360 KB Output is correct
33 Correct 29 ms 2360 KB Output is correct
34 Correct 36 ms 2360 KB Output is correct
35 Correct 23 ms 2096 KB Output is correct
36 Correct 23 ms 2096 KB Output is correct
37 Correct 103 ms 19568 KB Output is correct
38 Correct 56 ms 10808 KB Output is correct
39 Correct 23 ms 2228 KB Output is correct
40 Correct 23 ms 2096 KB Output is correct
41 Correct 36 ms 10148 KB Output is correct
42 Correct 43 ms 10148 KB Output is correct
43 Correct 26 ms 2228 KB Output is correct
44 Correct 23 ms 2228 KB Output is correct

Subtask #3
0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2096 KB Output is correct
2 Correct 0 ms 2096 KB Output is correct
3 Correct 0 ms 2096 KB Output is correct
4 Correct 0 ms 2096 KB Output is correct
5 Correct 0 ms 2096 KB Output is correct
6 Correct 0 ms 2096 KB Output is correct
7 Correct 0 ms 2096 KB Output is correct
8 Correct 0 ms 2096 KB Output is correct
9 Correct 0 ms 2096 KB Output is correct
10 Correct 0 ms 2096 KB Output is correct
11 Correct 0 ms 2096 KB Output is correct
12 Correct 0 ms 2096 KB Output is correct
13 Correct 0 ms 2096 KB Output is correct
14 Correct 0 ms 2096 KB Output is correct
15 Correct 0 ms 2096 KB Output is correct
16 Correct 0 ms 2096 KB Output is correct
17 Correct 0 ms 2096 KB Output is correct
18 Correct 0 ms 2096 KB Output is correct
19 Correct 0 ms 2096 KB Output is correct
20 Correct 0 ms 2096 KB Output is correct
21 Correct 0 ms 2096 KB Output is correct
22 Correct 0 ms 2096 KB Output is correct
23 Correct 0 ms 2096 KB Output is correct
24 Correct 0 ms 2096 KB Output is correct
25 Correct 26 ms 2360 KB Output is correct
26 Correct 33 ms 2492 KB Output is correct
27 Correct 29 ms 2360 KB Output is correct
28 Correct 26 ms 2624 KB Output is correct
29 Correct 29 ms 2492 KB Output is correct
30 Correct 29 ms 2624 KB Output is correct
31 Correct 29 ms 2492 KB Output is correct
32 Correct 33 ms 2360 KB Output is correct
33 Correct 29 ms 2360 KB Output is correct
34 Correct 36 ms 2360 KB Output is correct
35 Correct 23 ms 2096 KB Output is correct
36 Correct 23 ms 2096 KB Output is correct
37 Correct 103 ms 19568 KB Output is correct
38 Correct 56 ms 10808 KB Output is correct
39 Correct 23 ms 2228 KB Output is correct
40 Correct 23 ms 2096 KB Output is correct
41 Correct 36 ms 10148 KB Output is correct
42 Correct 43 ms 10148 KB Output is correct
43 Correct 26 ms 2228 KB Output is correct
44 Correct 23 ms 2228 KB Output is correct
45 Runtime error 0 ms 2096 KB Execution killed because of forbidden syscall futex (202)
46 Halted 0 ms 0 KB -

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2096 KB Output is correct
2 Correct 0 ms 2096 KB Output is correct
3 Correct 0 ms 2096 KB Output is correct
4 Correct 0 ms 2096 KB Output is correct
5 Correct 0 ms 2096 KB Output is correct
6 Correct 0 ms 2096 KB Output is correct
7 Correct 0 ms 2096 KB Output is correct
8 Correct 0 ms 2096 KB Output is correct
9 Correct 0 ms 2096 KB Output is correct
10 Correct 0 ms 2096 KB Output is correct
11 Correct 0 ms 2096 KB Output is correct
12 Correct 0 ms 2096 KB Output is correct
13 Correct 0 ms 2096 KB Output is correct
14 Correct 0 ms 2096 KB Output is correct
15 Correct 0 ms 2096 KB Output is correct
16 Correct 0 ms 2096 KB Output is correct
17 Correct 0 ms 2096 KB Output is correct
18 Correct 0 ms 2096 KB Output is correct
19 Correct 0 ms 2096 KB Output is correct
20 Correct 0 ms 2096 KB Output is correct
21 Correct 0 ms 2096 KB Output is correct
22 Correct 0 ms 2096 KB Output is correct
23 Correct 0 ms 2096 KB Output is correct
24 Correct 0 ms 2096 KB Output is correct
25 Correct 26 ms 2360 KB Output is correct
26 Correct 33 ms 2492 KB Output is correct
27 Correct 29 ms 2360 KB Output is correct
28 Correct 26 ms 2624 KB Output is correct
29 Correct 29 ms 2492 KB Output is correct
30 Correct 29 ms 2624 KB Output is correct
31 Correct 29 ms 2492 KB Output is correct
32 Correct 33 ms 2360 KB Output is correct
33 Correct 29 ms 2360 KB Output is correct
34 Correct 36 ms 2360 KB Output is correct
35 Correct 23 ms 2096 KB Output is correct
36 Correct 23 ms 2096 KB Output is correct
37 Correct 103 ms 19568 KB Output is correct
38 Correct 56 ms 10808 KB Output is correct
39 Correct 23 ms 2228 KB Output is correct
40 Correct 23 ms 2096 KB Output is correct
41 Correct 36 ms 10148 KB Output is correct
42 Correct 43 ms 10148 KB Output is correct
43 Correct 26 ms 2228 KB Output is correct
44 Correct 23 ms 2228 KB Output is correct
45 Runtime error 0 ms 2096 KB Execution killed because of forbidden syscall futex (202)
46 Halted 0 ms 0 KB -