oj.uz

Submission #129130

# Submission time Handle Problem Language Result Execution time Memory
129130 2019-07-11T17:46:43 Z mohammedehab2002 Lamps (JOI19_lamps) C++11
4 / 100
 216 ms 65120 KB 
#include <iostream>
using namespace std;
int dp[4][4][1000005];
int main()
{
	int n;
	string a,b;
	cin >> n >> a >> b;
	for (int j=0;j<4;j++)
	{
		for (int k=0;k<4;k++)
		dp[j][k][0]=1e9;
	}
	dp[3][3][0]=0;
	for (int i=0;i<=n;i++)
	{
		int mn=1e9,md[4];
		for (int j=0;j<4;j++)
		md[j]=1e9;
		for (int j=0;j<4;j++)
		{
			for (int k=0;k<4;k++)
			{
				dp[j][k][i+1]=1e9;
				mn=min(mn,dp[j][k][i]);
				md[j]=min(md[j],dp[j][k][i]);
				md[k]=min(md[k],dp[j][k][i]);
			}
		}
		if (i==n)
		{
			printf("%d",mn);
			return 0;
		}
		if (a[i]==b[i])
		dp[3][3][i+1]=mn;
		else
		dp[2][3][i+1]=min(min(mn+1,md[2]),dp[2][3][i]);
		bool cur=b[i]-'0';
		dp[!cur][2][i+1]=min(min(md[!cur]+1,md[2]+1),min(dp[!cur][2][i],mn+2));
		dp[2][cur][i+1]=min(min(md[2]+1,md[cur]+1),min(dp[2][cur][i],mn+2));
		dp[cur][3][i+1]=min(min(md[cur]+1,md[3]+1),min(dp[cur][3][i],mn+2));
	}
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 476 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Incorrect 2 ms 504 KB Output isn't correct
20 Halted 0 ms 0 KB -

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 476 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Incorrect 2 ms 504 KB Output isn't correct
20 Halted 0 ms 0 KB -

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 508 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 214 ms 65028 KB Output is correct
8 Correct 213 ms 65044 KB Output is correct
9 Correct 212 ms 65120 KB Output is correct
10 Correct 213 ms 65000 KB Output is correct
11 Correct 216 ms 65096 KB Output is correct
12 Correct 215 ms 65028 KB Output is correct
13 Correct 216 ms 65068 KB Output is correct
14 Correct 216 ms 65024 KB Output is correct

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 476 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Incorrect 2 ms 504 KB Output isn't correct
20 Halted 0 ms 0 KB -