oj.uz

Submission #58716

# Submission time Handle Problem Language Result Execution time Memory
58716 2018-07-19T02:14:00 Z onjo0127(#1933) Alternating Current (BOI18_alternating) C++11
13 / 100
 3000 ms 2628 KB 
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;

bool b[100009], r[100009];
pii A[100009];

int main() {
    int N, M;
    scanf("%d%d",&N,&M);
    for(int i=0; i<M; i++) {
        scanf("%d%d", &A[i].first, &A[i].second);
    }
    for(int i=0; i <= (1 << M); i++) {
        for(int j=0; j<M; j++) {
            if(i & (1 << j)) {
                if(A[j].first <= A[j].second)
                    for(int k=A[j].first; k<=A[j].second; k++) b[k] = 1;
                else {
                    for(int k=A[j].first; k<=N; k++) b[k] = 1;
                    for(int k=1; k<=A[j].second; k++) b[k] = 1;
                }
            }
            else {
                if(A[j].first <= A[j].second)
                    for(int k=A[j].first; k<=A[j].second; k++) r[k] = 1;
                else {
                    for(int k=A[j].first; k<=N; k++) r[k] = 1;
                    for(int k=1; k<=A[j].second; k++) r[k] = 1;
                }
            }
        }
        int c = 0;
        for(int i=1; i<=N; i++) {
            if(b[i] && r[i]) ++c;
        }
        if(c == N) {
            for(int j=0; j<M; j++) printf("%d", (i & (1 << j)) ? 1 : 0);
            return 0;
        }
        memset(b, 0, sizeof(b));
        memset(r, 0, sizeof(r));
    }
    puts("impossible");
    return 0;
}

Compilation message

alternating.cpp: In function 'int main()':
alternating.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&N,&M);
     ~~~~~^~~~~~~~~~~~~~
alternating.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &A[i].first, &A[i].second);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 624 KB Output is correct
3 Correct 3 ms 664 KB Output is correct
4 Correct 4 ms 664 KB Output is correct
5 Correct 3 ms 796 KB Output is correct
6 Correct 3 ms 796 KB Output is correct
7 Correct 2 ms 896 KB Output is correct
8 Correct 4 ms 896 KB Output is correct
9 Correct 2 ms 896 KB Output is correct
10 Correct 8 ms 896 KB Output is correct
11 Correct 4 ms 896 KB Output is correct
12 Correct 5 ms 908 KB Output is correct
13 Correct 22 ms 984 KB Output is correct
14 Correct 3 ms 984 KB Output is correct
15 Correct 3 ms 984 KB Output is correct
16 Correct 49 ms 984 KB Output is correct
17 Correct 8 ms 1040 KB Output is correct
18 Correct 9 ms 1040 KB Output is correct
19 Correct 3 ms 1040 KB Output is correct
20 Correct 4 ms 1040 KB Output is correct
21 Correct 3 ms 1040 KB Output is correct
22 Correct 40 ms 1040 KB Output is correct
23 Correct 3 ms 1040 KB Output is correct
24 Correct 7 ms 1040 KB Output is correct
25 Correct 4 ms 1040 KB Output is correct
26 Correct 4 ms 1040 KB Output is correct
27 Correct 44 ms 1040 KB Output is correct
28 Correct 4 ms 1040 KB Output is correct
29 Correct 3 ms 1040 KB Output is correct
30 Correct 3 ms 1040 KB Output is correct
31 Correct 3 ms 1040 KB Output is correct
32 Correct 3 ms 1040 KB Output is correct
33 Correct 2 ms 1040 KB Output is correct
34 Correct 3 ms 1040 KB Output is correct
35 Correct 330 ms 1112 KB Output is correct
36 Correct 16 ms 1112 KB Output is correct
37 Correct 4 ms 1112 KB Output is correct
38 Correct 337 ms 1112 KB Output is correct
39 Correct 7 ms 1112 KB Output is correct
40 Correct 4 ms 1112 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 624 KB Output is correct
3 Correct 3 ms 664 KB Output is correct
4 Correct 4 ms 664 KB Output is correct
5 Correct 3 ms 796 KB Output is correct
6 Correct 3 ms 796 KB Output is correct
7 Correct 2 ms 896 KB Output is correct
8 Correct 4 ms 896 KB Output is correct
9 Correct 2 ms 896 KB Output is correct
10 Correct 8 ms 896 KB Output is correct
11 Correct 4 ms 896 KB Output is correct
12 Correct 5 ms 908 KB Output is correct
13 Correct 22 ms 984 KB Output is correct
14 Correct 3 ms 984 KB Output is correct
15 Correct 3 ms 984 KB Output is correct
16 Correct 49 ms 984 KB Output is correct
17 Correct 8 ms 1040 KB Output is correct
18 Correct 9 ms 1040 KB Output is correct
19 Correct 3 ms 1040 KB Output is correct
20 Correct 4 ms 1040 KB Output is correct
21 Correct 3 ms 1040 KB Output is correct
22 Correct 40 ms 1040 KB Output is correct
23 Correct 3 ms 1040 KB Output is correct
24 Correct 7 ms 1040 KB Output is correct
25 Correct 4 ms 1040 KB Output is correct
26 Correct 4 ms 1040 KB Output is correct
27 Correct 44 ms 1040 KB Output is correct
28 Correct 4 ms 1040 KB Output is correct
29 Correct 3 ms 1040 KB Output is correct
30 Correct 3 ms 1040 KB Output is correct
31 Correct 3 ms 1040 KB Output is correct
32 Correct 3 ms 1040 KB Output is correct
33 Correct 2 ms 1040 KB Output is correct
34 Correct 3 ms 1040 KB Output is correct
35 Correct 330 ms 1112 KB Output is correct
36 Correct 16 ms 1112 KB Output is correct
37 Correct 4 ms 1112 KB Output is correct
38 Correct 337 ms 1112 KB Output is correct
39 Correct 7 ms 1112 KB Output is correct
40 Correct 4 ms 1112 KB Output is correct
41 Correct 3 ms 1112 KB Output is correct
42 Correct 14 ms 1112 KB Output is correct
43 Incorrect 3 ms 1112 KB 'impossible' claimed, but there is a solution
44 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 624 KB Output is correct
3 Correct 3 ms 664 KB Output is correct
4 Correct 4 ms 664 KB Output is correct
5 Correct 3 ms 796 KB Output is correct
6 Correct 3 ms 796 KB Output is correct
7 Correct 2 ms 896 KB Output is correct
8 Correct 4 ms 896 KB Output is correct
9 Correct 2 ms 896 KB Output is correct
10 Correct 8 ms 896 KB Output is correct
11 Correct 4 ms 896 KB Output is correct
12 Correct 5 ms 908 KB Output is correct
13 Correct 22 ms 984 KB Output is correct
14 Correct 3 ms 984 KB Output is correct
15 Correct 3 ms 984 KB Output is correct
16 Correct 49 ms 984 KB Output is correct
17 Correct 8 ms 1040 KB Output is correct
18 Correct 9 ms 1040 KB Output is correct
19 Correct 3 ms 1040 KB Output is correct
20 Correct 4 ms 1040 KB Output is correct
21 Correct 3 ms 1040 KB Output is correct
22 Correct 40 ms 1040 KB Output is correct
23 Correct 3 ms 1040 KB Output is correct
24 Correct 7 ms 1040 KB Output is correct
25 Correct 4 ms 1040 KB Output is correct
26 Correct 4 ms 1040 KB Output is correct
27 Correct 44 ms 1040 KB Output is correct
28 Correct 4 ms 1040 KB Output is correct
29 Correct 3 ms 1040 KB Output is correct
30 Correct 3 ms 1040 KB Output is correct
31 Correct 3 ms 1040 KB Output is correct
32 Correct 3 ms 1040 KB Output is correct
33 Correct 2 ms 1040 KB Output is correct
34 Correct 3 ms 1040 KB Output is correct
35 Correct 330 ms 1112 KB Output is correct
36 Correct 16 ms 1112 KB Output is correct
37 Correct 4 ms 1112 KB Output is correct
38 Correct 337 ms 1112 KB Output is correct
39 Correct 7 ms 1112 KB Output is correct
40 Correct 4 ms 1112 KB Output is correct
41 Correct 3 ms 1112 KB Output is correct
42 Correct 14 ms 1112 KB Output is correct
43 Incorrect 3 ms 1112 KB 'impossible' claimed, but there is a solution
44 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3044 ms 2628 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 624 KB Output is correct
3 Correct 3 ms 664 KB Output is correct
4 Correct 4 ms 664 KB Output is correct
5 Correct 3 ms 796 KB Output is correct
6 Correct 3 ms 796 KB Output is correct
7 Correct 2 ms 896 KB Output is correct
8 Correct 4 ms 896 KB Output is correct
9 Correct 2 ms 896 KB Output is correct
10 Correct 8 ms 896 KB Output is correct
11 Correct 4 ms 896 KB Output is correct
12 Correct 5 ms 908 KB Output is correct
13 Correct 22 ms 984 KB Output is correct
14 Correct 3 ms 984 KB Output is correct
15 Correct 3 ms 984 KB Output is correct
16 Correct 49 ms 984 KB Output is correct
17 Correct 8 ms 1040 KB Output is correct
18 Correct 9 ms 1040 KB Output is correct
19 Correct 3 ms 1040 KB Output is correct
20 Correct 4 ms 1040 KB Output is correct
21 Correct 3 ms 1040 KB Output is correct
22 Correct 40 ms 1040 KB Output is correct
23 Correct 3 ms 1040 KB Output is correct
24 Correct 7 ms 1040 KB Output is correct
25 Correct 4 ms 1040 KB Output is correct
26 Correct 4 ms 1040 KB Output is correct
27 Correct 44 ms 1040 KB Output is correct
28 Correct 4 ms 1040 KB Output is correct
29 Correct 3 ms 1040 KB Output is correct
30 Correct 3 ms 1040 KB Output is correct
31 Correct 3 ms 1040 KB Output is correct
32 Correct 3 ms 1040 KB Output is correct
33 Correct 2 ms 1040 KB Output is correct
34 Correct 3 ms 1040 KB Output is correct
35 Correct 330 ms 1112 KB Output is correct
36 Correct 16 ms 1112 KB Output is correct
37 Correct 4 ms 1112 KB Output is correct
38 Correct 337 ms 1112 KB Output is correct
39 Correct 7 ms 1112 KB Output is correct
40 Correct 4 ms 1112 KB Output is correct
41 Correct 3 ms 1112 KB Output is correct
42 Correct 14 ms 1112 KB Output is correct
43 Incorrect 3 ms 1112 KB 'impossible' claimed, but there is a solution
44 Halted 0 ms 0 KB -