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Submission #129169

# Submission time Handle Problem Language Result Execution time Memory
129169 2019-07-11T18:43:19 Z mahmoudbadawy Lamps (JOI19_lamps) C++17
6 / 100
 1000 ms 4928 KB 
#include <bits/stdc++.h>

using namespace std;

string a,b;
int n;
int dis[(1<<18)];

int conv(string s)
{
	int res=0;
	for(int i=0;i<s.size();i++)
		res=res*2+(s[i]-'0');
	return res;
}

int main()
{
	cin >> n >> a >> b;
	queue<int> q;
	q.push(conv(a));
	int bb=conv(b);
	memset(dis,-1,sizeof dis);
	dis[conv(a)]=0;
	while(q.size())
	{
		int s=q.front(); q.pop();
		if(s==bb) break;
		for(int i=0;i<n;i++)
		{
			int sd=s;
			for(int j=i;j<n;j++)
			{
				sd&=(~(1<<j));
				if(dis[sd]!=-1) continue;
				dis[sd]=dis[s]+1;
				q.push(sd);
			}
		}
		for(int i=0;i<n;i++)
		{
			int sd=s;
			for(int j=i;j<n;j++)
			{
				sd|=(1<<j);
				if(dis[sd]!=-1) continue;
				dis[sd]=dis[s]+1;
				q.push(sd);
			}
		}
		for(int i=0;i<n;i++)
		{
			int sd=s;
			for(int j=i;j<n;j++)
			{
				sd^=(1<<j);
				if(dis[sd]!=-1) continue;
				dis[sd]=dis[s]+1;
				q.push(sd);
			}
		}
	}
	cout << dis[bb] << endl;
	
}

Compilation message

lamp.cpp: In function 'int conv(std::__cxx11::string)':
lamp.cpp:12:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<s.size();i++)
              ~^~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1272 KB Output is correct
2 Correct 3 ms 1272 KB Output is correct
3 Correct 3 ms 1400 KB Output is correct
4 Correct 3 ms 1400 KB Output is correct
5 Correct 3 ms 1272 KB Output is correct
6 Correct 3 ms 1400 KB Output is correct
7 Correct 3 ms 1400 KB Output is correct
8 Correct 391 ms 1840 KB Output is correct
9 Correct 387 ms 1884 KB Output is correct
10 Correct 171 ms 1664 KB Output is correct
11 Correct 168 ms 1528 KB Output is correct
12 Correct 33 ms 1784 KB Output is correct
13 Correct 91 ms 1656 KB Output is correct
14 Correct 70 ms 1812 KB Output is correct
15 Correct 107 ms 1676 KB Output is correct
16 Correct 259 ms 1788 KB Output is correct
17 Correct 99 ms 1660 KB Output is correct
18 Correct 37 ms 1656 KB Output is correct
19 Correct 25 ms 1528 KB Output is correct
20 Correct 235 ms 1912 KB Output is correct
21 Correct 9 ms 1528 KB Output is correct
22 Correct 33 ms 1784 KB Output is correct
23 Correct 62 ms 1656 KB Output is correct
24 Correct 4 ms 1400 KB Output is correct
25 Correct 5 ms 1528 KB Output is correct
26 Correct 216 ms 2048 KB Output is correct
27 Correct 78 ms 1528 KB Output is correct
28 Correct 36 ms 1532 KB Output is correct
29 Correct 333 ms 1912 KB Output is correct
30 Correct 118 ms 1656 KB Output is correct
31 Correct 5 ms 1400 KB Output is correct
32 Correct 42 ms 1784 KB Output is correct
33 Correct 103 ms 1528 KB Output is correct
34 Correct 27 ms 1528 KB Output is correct

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1272 KB Output is correct
2 Correct 3 ms 1272 KB Output is correct
3 Correct 3 ms 1400 KB Output is correct
4 Correct 3 ms 1400 KB Output is correct
5 Correct 3 ms 1272 KB Output is correct
6 Correct 3 ms 1400 KB Output is correct
7 Correct 3 ms 1400 KB Output is correct
8 Correct 391 ms 1840 KB Output is correct
9 Correct 387 ms 1884 KB Output is correct
10 Correct 171 ms 1664 KB Output is correct
11 Correct 168 ms 1528 KB Output is correct
12 Correct 33 ms 1784 KB Output is correct
13 Correct 91 ms 1656 KB Output is correct
14 Correct 70 ms 1812 KB Output is correct
15 Correct 107 ms 1676 KB Output is correct
16 Correct 259 ms 1788 KB Output is correct
17 Correct 99 ms 1660 KB Output is correct
18 Correct 37 ms 1656 KB Output is correct
19 Correct 25 ms 1528 KB Output is correct
20 Correct 235 ms 1912 KB Output is correct
21 Correct 9 ms 1528 KB Output is correct
22 Correct 33 ms 1784 KB Output is correct
23 Correct 62 ms 1656 KB Output is correct
24 Correct 4 ms 1400 KB Output is correct
25 Correct 5 ms 1528 KB Output is correct
26 Correct 216 ms 2048 KB Output is correct
27 Correct 78 ms 1528 KB Output is correct
28 Correct 36 ms 1532 KB Output is correct
29 Correct 333 ms 1912 KB Output is correct
30 Correct 118 ms 1656 KB Output is correct
31 Correct 5 ms 1400 KB Output is correct
32 Correct 42 ms 1784 KB Output is correct
33 Correct 103 ms 1528 KB Output is correct
34 Correct 27 ms 1528 KB Output is correct
35 Runtime error 5 ms 2552 KB Execution killed with signal 11 (could be triggered by violating memory limits)
36 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1400 KB Output is correct
2 Correct 3 ms 1272 KB Output is correct
3 Correct 3 ms 1372 KB Output is correct
4 Correct 3 ms 1400 KB Output is correct
5 Correct 3 ms 1400 KB Output is correct
6 Correct 3 ms 1400 KB Output is correct
7 Correct 126 ms 4928 KB Output is correct
8 Execution timed out 1075 ms 4876 KB Time limit exceeded
9 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1272 KB Output is correct
2 Correct 3 ms 1272 KB Output is correct
3 Correct 3 ms 1400 KB Output is correct
4 Correct 3 ms 1400 KB Output is correct
5 Correct 3 ms 1272 KB Output is correct
6 Correct 3 ms 1400 KB Output is correct
7 Correct 3 ms 1400 KB Output is correct
8 Correct 391 ms 1840 KB Output is correct
9 Correct 387 ms 1884 KB Output is correct
10 Correct 171 ms 1664 KB Output is correct
11 Correct 168 ms 1528 KB Output is correct
12 Correct 33 ms 1784 KB Output is correct
13 Correct 91 ms 1656 KB Output is correct
14 Correct 70 ms 1812 KB Output is correct
15 Correct 107 ms 1676 KB Output is correct
16 Correct 259 ms 1788 KB Output is correct
17 Correct 99 ms 1660 KB Output is correct
18 Correct 37 ms 1656 KB Output is correct
19 Correct 25 ms 1528 KB Output is correct
20 Correct 235 ms 1912 KB Output is correct
21 Correct 9 ms 1528 KB Output is correct
22 Correct 33 ms 1784 KB Output is correct
23 Correct 62 ms 1656 KB Output is correct
24 Correct 4 ms 1400 KB Output is correct
25 Correct 5 ms 1528 KB Output is correct
26 Correct 216 ms 2048 KB Output is correct
27 Correct 78 ms 1528 KB Output is correct
28 Correct 36 ms 1532 KB Output is correct
29 Correct 333 ms 1912 KB Output is correct
30 Correct 118 ms 1656 KB Output is correct
31 Correct 5 ms 1400 KB Output is correct
32 Correct 42 ms 1784 KB Output is correct
33 Correct 103 ms 1528 KB Output is correct
34 Correct 27 ms 1528 KB Output is correct
35 Runtime error 5 ms 2552 KB Execution killed with signal 11 (could be triggered by violating memory limits)
36 Halted 0 ms 0 KB -