/* Author : Mychecksdead */
#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef long double ld;
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define PI 3.1415926535
#define pb push_back
#define setp() cout << setprecision(15)
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " is " << x << '\n';
const int N = 1e6+100, M = 1e5+10, F = 2147483646, K = 20;
int n, m;
vector<int> v[N];
void solve(){
cin >> n >> m;
for(int i = 0; i < m; ++i){
int x, y; cin >> x >> y;
x--, y--;
if(x>y){
for(int j = x; j < n; ++j) v[j].pb(i);
for(int j = 0; j <= y; ++j) v[j].pb(i);
}else{
for(int j = x; j <= y; ++j) v[j].pb(i);
}
}
for(int mask = 0; mask < (1<<m); ++mask){
bool ok = 1;
for(int i = 0; i < n; ++i){
bool a = 0, b = 0;
for(int x: v[i]){
a |= (mask&(1<<x)) > 0;
b |= (mask&(1<<x)) == 0;
}
if(!(a && b)){
ok = 0;
}
}
if(ok){
for(int i = 0; i < m; ++i) cout << ((mask&(1<<i))>0);
return;
}
}
cout << "impossible";
}
int main(){
cin.tie(0); ios::sync_with_stdio(0);
int T = 1, aa;
// cin >> T;aa=T;
while(T--){
// cout << "Case #" << aa-T << ": ";
solve();
cout << '\n';
}
return 0;
}
Compilation message
alternating.cpp: In function 'int main()':
alternating.cpp:57:16: warning: unused variable 'aa' [-Wunused-variable]
57 | int T = 1, aa;
| ^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
15 ms |
23764 KB |
Output is correct |
| 2 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 3 |
Correct |
14 ms |
23808 KB |
Output is correct |
| 4 |
Correct |
12 ms |
23804 KB |
Output is correct |
| 5 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 6 |
Correct |
12 ms |
23880 KB |
Output is correct |
| 7 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 8 |
Correct |
13 ms |
23812 KB |
Output is correct |
| 9 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 10 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 11 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 12 |
Correct |
13 ms |
23732 KB |
Output is correct |
| 13 |
Correct |
13 ms |
23676 KB |
Output is correct |
| 14 |
Correct |
13 ms |
23812 KB |
Output is correct |
| 15 |
Correct |
11 ms |
23704 KB |
Output is correct |
| 16 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 17 |
Correct |
12 ms |
23776 KB |
Output is correct |
| 18 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 19 |
Correct |
12 ms |
23736 KB |
Output is correct |
| 20 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 21 |
Correct |
12 ms |
23780 KB |
Output is correct |
| 22 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 23 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 24 |
Correct |
12 ms |
23808 KB |
Output is correct |
| 25 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 26 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 27 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 28 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 29 |
Correct |
11 ms |
23720 KB |
Output is correct |
| 30 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 31 |
Correct |
12 ms |
23744 KB |
Output is correct |
| 32 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 33 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 34 |
Correct |
12 ms |
23804 KB |
Output is correct |
| 35 |
Correct |
15 ms |
23764 KB |
Output is correct |
| 36 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 37 |
Correct |
15 ms |
23736 KB |
Output is correct |
| 38 |
Correct |
15 ms |
23816 KB |
Output is correct |
| 39 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 40 |
Correct |
12 ms |
23764 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
15 ms |
23764 KB |
Output is correct |
| 2 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 3 |
Correct |
14 ms |
23808 KB |
Output is correct |
| 4 |
Correct |
12 ms |
23804 KB |
Output is correct |
| 5 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 6 |
Correct |
12 ms |
23880 KB |
Output is correct |
| 7 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 8 |
Correct |
13 ms |
23812 KB |
Output is correct |
| 9 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 10 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 11 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 12 |
Correct |
13 ms |
23732 KB |
Output is correct |
| 13 |
Correct |
13 ms |
23676 KB |
Output is correct |
| 14 |
Correct |
13 ms |
23812 KB |
Output is correct |
| 15 |
Correct |
11 ms |
23704 KB |
Output is correct |
| 16 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 17 |
Correct |
12 ms |
23776 KB |
Output is correct |
| 18 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 19 |
Correct |
12 ms |
23736 KB |
Output is correct |
| 20 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 21 |
Correct |
12 ms |
23780 KB |
Output is correct |
| 22 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 23 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 24 |
Correct |
12 ms |
23808 KB |
Output is correct |
| 25 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 26 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 27 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 28 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 29 |
Correct |
11 ms |
23720 KB |
Output is correct |
| 30 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 31 |
Correct |
12 ms |
23744 KB |
Output is correct |
| 32 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 33 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 34 |
Correct |
12 ms |
23804 KB |
Output is correct |
| 35 |
Correct |
15 ms |
23764 KB |
Output is correct |
| 36 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 37 |
Correct |
15 ms |
23736 KB |
Output is correct |
| 38 |
Correct |
15 ms |
23816 KB |
Output is correct |
| 39 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 40 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 41 |
Correct |
12 ms |
23812 KB |
Output is correct |
| 42 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 43 |
Incorrect |
12 ms |
23764 KB |
'impossible' claimed, but there is a solution |
| 44 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
15 ms |
23764 KB |
Output is correct |
| 2 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 3 |
Correct |
14 ms |
23808 KB |
Output is correct |
| 4 |
Correct |
12 ms |
23804 KB |
Output is correct |
| 5 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 6 |
Correct |
12 ms |
23880 KB |
Output is correct |
| 7 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 8 |
Correct |
13 ms |
23812 KB |
Output is correct |
| 9 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 10 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 11 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 12 |
Correct |
13 ms |
23732 KB |
Output is correct |
| 13 |
Correct |
13 ms |
23676 KB |
Output is correct |
| 14 |
Correct |
13 ms |
23812 KB |
Output is correct |
| 15 |
Correct |
11 ms |
23704 KB |
Output is correct |
| 16 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 17 |
Correct |
12 ms |
23776 KB |
Output is correct |
| 18 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 19 |
Correct |
12 ms |
23736 KB |
Output is correct |
| 20 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 21 |
Correct |
12 ms |
23780 KB |
Output is correct |
| 22 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 23 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 24 |
Correct |
12 ms |
23808 KB |
Output is correct |
| 25 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 26 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 27 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 28 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 29 |
Correct |
11 ms |
23720 KB |
Output is correct |
| 30 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 31 |
Correct |
12 ms |
23744 KB |
Output is correct |
| 32 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 33 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 34 |
Correct |
12 ms |
23804 KB |
Output is correct |
| 35 |
Correct |
15 ms |
23764 KB |
Output is correct |
| 36 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 37 |
Correct |
15 ms |
23736 KB |
Output is correct |
| 38 |
Correct |
15 ms |
23816 KB |
Output is correct |
| 39 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 40 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 41 |
Correct |
12 ms |
23812 KB |
Output is correct |
| 42 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 43 |
Incorrect |
12 ms |
23764 KB |
'impossible' claimed, but there is a solution |
| 44 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
3087 ms |
827568 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
15 ms |
23764 KB |
Output is correct |
| 2 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 3 |
Correct |
14 ms |
23808 KB |
Output is correct |
| 4 |
Correct |
12 ms |
23804 KB |
Output is correct |
| 5 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 6 |
Correct |
12 ms |
23880 KB |
Output is correct |
| 7 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 8 |
Correct |
13 ms |
23812 KB |
Output is correct |
| 9 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 10 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 11 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 12 |
Correct |
13 ms |
23732 KB |
Output is correct |
| 13 |
Correct |
13 ms |
23676 KB |
Output is correct |
| 14 |
Correct |
13 ms |
23812 KB |
Output is correct |
| 15 |
Correct |
11 ms |
23704 KB |
Output is correct |
| 16 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 17 |
Correct |
12 ms |
23776 KB |
Output is correct |
| 18 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 19 |
Correct |
12 ms |
23736 KB |
Output is correct |
| 20 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 21 |
Correct |
12 ms |
23780 KB |
Output is correct |
| 22 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 23 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 24 |
Correct |
12 ms |
23808 KB |
Output is correct |
| 25 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 26 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 27 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 28 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 29 |
Correct |
11 ms |
23720 KB |
Output is correct |
| 30 |
Correct |
11 ms |
23764 KB |
Output is correct |
| 31 |
Correct |
12 ms |
23744 KB |
Output is correct |
| 32 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 33 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 34 |
Correct |
12 ms |
23804 KB |
Output is correct |
| 35 |
Correct |
15 ms |
23764 KB |
Output is correct |
| 36 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 37 |
Correct |
15 ms |
23736 KB |
Output is correct |
| 38 |
Correct |
15 ms |
23816 KB |
Output is correct |
| 39 |
Correct |
13 ms |
23808 KB |
Output is correct |
| 40 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 41 |
Correct |
12 ms |
23812 KB |
Output is correct |
| 42 |
Correct |
12 ms |
23764 KB |
Output is correct |
| 43 |
Incorrect |
12 ms |
23764 KB |
'impossible' claimed, but there is a solution |
| 44 |
Halted |
0 ms |
0 KB |
- |
