oj.uz

Submission #1116239

# Submission time Handle Problem Language Result Execution time Memory
1116239 2024-11-21T11:27:13 Z firewater Lamps (JOI19_lamps) C++14
4 / 100
 38 ms 49392 KB 
#include<bits/stdc++.h>
#define N 1001000
 using namespace std;
 int n,ans,a[N],b[N],f[N][5][2];
char s1[N],s2[N];
int main()
 {
 	scanf("%d%s%s",&n,s1+1,s2+1);
	for(int i=1;i<=n;++i)
 		a[i]=s2[i]-'0'+1,b[i]=(s1[i]!=s2[i]);
 	memset(f,127/3,sizeof(f));
    f[0][0][0]=0;
 	for(int i=1;i<=n;++i)
 		for(int j=0;j<=2;++j)
                 for(int k=0;k<=1;++k){
 			f[i][0][b[i]]=min(f[i][0][b[i]],f[i-1][j][k]+(b[i]&&(b[i]!=k)));
 			if(j)f[i][j][k]=min(f[i][j][k],f[i-1][j][k]+(a[i]!=j&&a[i]!=a[i-1]));
 			f[i][a[i]][k]=min(f[i][a[i]][k],f[i-1][j][k]+1);
 		}
 	ans=f[0][0][1];
 	for(int j=0;j<=2;++j)
          for(int k=0;k<=1;++k)
 		 ans=min(ans,f[n][j][k]);
 	printf("%d\n",ans);
 	return 0;
 }

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:8:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |   scanf("%d%s%s",&n,s1+1,s2+1);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 43344 KB Output is correct
2 Correct 6 ms 43344 KB Output is correct
3 Correct 5 ms 43536 KB Output is correct
4 Correct 6 ms 43344 KB Output is correct
5 Correct 5 ms 43344 KB Output is correct
6 Correct 6 ms 43468 KB Output is correct
7 Correct 7 ms 43356 KB Output is correct
8 Correct 6 ms 43700 KB Output is correct
9 Correct 6 ms 43532 KB Output is correct
10 Correct 7 ms 43492 KB Output is correct
11 Correct 6 ms 43344 KB Output is correct
12 Correct 6 ms 43456 KB Output is correct
13 Correct 6 ms 43344 KB Output is correct
14 Correct 6 ms 43344 KB Output is correct
15 Correct 6 ms 43344 KB Output is correct
16 Correct 6 ms 43344 KB Output is correct
17 Correct 6 ms 43344 KB Output is correct
18 Correct 6 ms 43344 KB Output is correct
19 Correct 6 ms 43344 KB Output is correct
20 Correct 6 ms 43532 KB Output is correct
21 Correct 6 ms 43344 KB Output is correct
22 Correct 5 ms 43344 KB Output is correct
23 Correct 6 ms 43536 KB Output is correct
24 Correct 6 ms 43344 KB Output is correct
25 Correct 6 ms 43344 KB Output is correct
26 Incorrect 6 ms 43344 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 43344 KB Output is correct
2 Correct 6 ms 43344 KB Output is correct
3 Correct 5 ms 43536 KB Output is correct
4 Correct 6 ms 43344 KB Output is correct
5 Correct 5 ms 43344 KB Output is correct
6 Correct 6 ms 43468 KB Output is correct
7 Correct 7 ms 43356 KB Output is correct
8 Correct 6 ms 43700 KB Output is correct
9 Correct 6 ms 43532 KB Output is correct
10 Correct 7 ms 43492 KB Output is correct
11 Correct 6 ms 43344 KB Output is correct
12 Correct 6 ms 43456 KB Output is correct
13 Correct 6 ms 43344 KB Output is correct
14 Correct 6 ms 43344 KB Output is correct
15 Correct 6 ms 43344 KB Output is correct
16 Correct 6 ms 43344 KB Output is correct
17 Correct 6 ms 43344 KB Output is correct
18 Correct 6 ms 43344 KB Output is correct
19 Correct 6 ms 43344 KB Output is correct
20 Correct 6 ms 43532 KB Output is correct
21 Correct 6 ms 43344 KB Output is correct
22 Correct 5 ms 43344 KB Output is correct
23 Correct 6 ms 43536 KB Output is correct
24 Correct 6 ms 43344 KB Output is correct
25 Correct 6 ms 43344 KB Output is correct
26 Incorrect 6 ms 43344 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 6 ms 43344 KB Output is correct
2 Correct 7 ms 43344 KB Output is correct
3 Correct 6 ms 43640 KB Output is correct
4 Correct 6 ms 43344 KB Output is correct
5 Correct 6 ms 43344 KB Output is correct
6 Correct 6 ms 43532 KB Output is correct
7 Correct 33 ms 49244 KB Output is correct
8 Correct 35 ms 49232 KB Output is correct
9 Correct 38 ms 49392 KB Output is correct
10 Correct 35 ms 49248 KB Output is correct
11 Correct 37 ms 49232 KB Output is correct
12 Correct 32 ms 49232 KB Output is correct
13 Correct 33 ms 49232 KB Output is correct
14 Correct 34 ms 49232 KB Output is correct

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 43344 KB Output is correct
2 Correct 6 ms 43344 KB Output is correct
3 Correct 5 ms 43536 KB Output is correct
4 Correct 6 ms 43344 KB Output is correct
5 Correct 5 ms 43344 KB Output is correct
6 Correct 6 ms 43468 KB Output is correct
7 Correct 7 ms 43356 KB Output is correct
8 Correct 6 ms 43700 KB Output is correct
9 Correct 6 ms 43532 KB Output is correct
10 Correct 7 ms 43492 KB Output is correct
11 Correct 6 ms 43344 KB Output is correct
12 Correct 6 ms 43456 KB Output is correct
13 Correct 6 ms 43344 KB Output is correct
14 Correct 6 ms 43344 KB Output is correct
15 Correct 6 ms 43344 KB Output is correct
16 Correct 6 ms 43344 KB Output is correct
17 Correct 6 ms 43344 KB Output is correct
18 Correct 6 ms 43344 KB Output is correct
19 Correct 6 ms 43344 KB Output is correct
20 Correct 6 ms 43532 KB Output is correct
21 Correct 6 ms 43344 KB Output is correct
22 Correct 5 ms 43344 KB Output is correct
23 Correct 6 ms 43536 KB Output is correct
24 Correct 6 ms 43344 KB Output is correct
25 Correct 6 ms 43344 KB Output is correct
26 Incorrect 6 ms 43344 KB Output isn't correct
27 Halted 0 ms 0 KB -