Submission #126410

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
126410	2019-07-07T15:47:52 Z	TadijaSebez	Lamps (JOI19_lamps)	C++11	4 / 100	38 ms	29816 KB

lamp

#include <bits/stdc++.h>
using namespace std;
const int N=1000050;
const int inf=1e9+7;
char a[N],b[N];
int dp[N][7];
int main()
{
	int n;
	scanf("%i",&n);
	scanf("%s",a+1);
	scanf("%s",b+1);
	dp[0][0]=0;
	dp[0][1]=inf;
	dp[0][2]=inf;
	dp[0][3]=inf;
	dp[0][4]=inf;
	dp[0][5]=inf;
	dp[0][6]=inf;
	for(int i=1;i<=n;i++)
	{
		if(a[i]!=b[i])
		{
			dp[i][1]=min(dp[i-1][1],dp[i-1][0]+1);
			dp[i][1]=min(dp[i][1],dp[i-1][3]);
			dp[i][1]=min(dp[i][1],dp[i-1][2]+1);
			dp[i][1]=min(dp[i][1],dp[i-1][6]);
			dp[i][1]=min(dp[i][1],dp[i-1][5]+1);
			dp[i][1]=min(dp[i][1],dp[i-1][4]);
			dp[i][0]=inf;
			dp[i][4]=inf;
		}
		else
		{
			dp[i][1]=inf;
			dp[i][4]=min(dp[i-1][1]+1,dp[i-1][0]+2);
			dp[i][4]=min(dp[i][4],dp[i-1][4]);
			dp[i][0]=min(dp[i-1][1],dp[i-1][0]);
			dp[i][0]=min(dp[i][0],dp[i-1][2]);
			dp[i][0]=min(dp[i][0],dp[i-1][3]);
			dp[i][0]=min(dp[i][0],dp[i-1][5]);
			dp[i][0]=min(dp[i][0],dp[i-1][6]);
		}
		if(b[i]!=b[i-1])
		{
			dp[i][2]=min(dp[i-1][5],dp[i-1][0]+1);
			dp[i][3]=min(dp[i-1][6],dp[i-1][1]+1);
			dp[i][5]=dp[i-1][2]+1;
			dp[i][6]=dp[i-1][3]+1;
		}
		else
		{
			dp[i][2]=min(dp[i-1][2],dp[i-1][0]+1);
			dp[i][3]=min(dp[i-1][3],dp[i-1][1]+1);
			dp[i][5]=dp[i-1][5];
			dp[i][6]=dp[i-1][6];
		}
	}
	int ans=min(dp[n][0],dp[n][1]);
	ans=min(ans,dp[n][2]);
	ans=min(ans,dp[n][3]);
	ans=min(ans,dp[n][4]);
	ans=min(ans,dp[n][5]);
	ans=min(ans,dp[n][6]);
	printf("%i\n",ans);
	return 0;
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:10:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i",&n);
  ~~~~~^~~~~~~~~
lamp.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",a+1);
  ~~~~~^~~~~~~~~~
lamp.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",b+1);
  ~~~~~^~~~~~~~~~

Subtask #1
0 / 6.0

#	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	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 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	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 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	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	380 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Incorrect	2 ms	376 KB	Output isn't correct
27	Halted	0 ms	0 KB	-

Subtask #2
0 / 41.0

#	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	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 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	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 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	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	380 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Incorrect	2 ms	376 KB	Output isn't correct
27	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	348 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	37 ms	29740 KB	Output is correct
8	Correct	38 ms	29688 KB	Output is correct
9	Correct	37 ms	29688 KB	Output is correct
10	Correct	37 ms	29816 KB	Output is correct
11	Correct	37 ms	29816 KB	Output is correct
12	Correct	37 ms	29796 KB	Output is correct
13	Correct	37 ms	29688 KB	Output is correct
14	Correct	37 ms	29688 KB	Output is correct

Subtask #4
0 / 49.0

#	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	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 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	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 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	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	380 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Incorrect	2 ms	376 KB	Output isn't correct
27	Halted	0 ms	0 KB	-

Submission #126410

Compilation message

Subtask #1 0 / 6.0

Subtask #2 0 / 41.0

Subtask #3 4.0 / 4.0

Subtask #4 0 / 49.0

Subtask #1
0 / 6.0

Subtask #2
0 / 41.0

Subtask #3
4.0 / 4.0

Subtask #4
0 / 49.0