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Submission #280218

# Submission time Handle Problem Language Result Execution time Memory
280218 2020-08-22T15:01:41 Z MKopchev Lamps (JOI19_lamps) C++14
100 / 100
 261 ms 121980 KB 
#include<bits/stdc++.h>
using namespace std;

const int nmax=1e6+42;

int dp[nmax][3][2];
/*dp[pos][type_1][type_2]
type_1: 0->set 0, 1->set 1, 2->nothing
type_2: 0->nothing, 1-> flip
*/

int n;
string a,b;

int rec(int pos,int type_1,int type_2)
{
    if(pos==n)return 0;
    if(dp[pos][type_1][type_2]!=-1)return dp[pos][type_1][type_2];

    int ret=2*n;

    for(int type_1_new=0;type_1_new<3;type_1_new++)
        for(int type_2_new=0;type_2_new<2;type_2_new++)
        {
            char cur=a[pos];

            if(type_1_new==0)cur='0';
            if(type_1_new==1)cur='1';

            if(type_2_new==1)cur='1'-cur+'0';

            if(cur==b[pos])
            {
                int add=0;

                if(type_1_new!=2&&type_1_new!=type_1)add++;

                if(type_2==0&&type_2_new==1)add++;

                ret=min(ret,add+rec(pos+1,type_1_new,type_2_new));
            }
        }
    dp[pos][type_1][type_2]=ret;

    //cout<<pos<<" "<<type_1<<" "<<type_2<<" -> "<<ret<<endl;

    return ret;
}
int main()
{
    memset(dp,-1,sizeof(dp));

    ios_base::sync_with_stdio(false);

    cin>>n;

    cin>>a>>b;

    cout<<rec(0,2,0)<<endl;
    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23808 KB Output is correct
2 Correct 13 ms 23808 KB Output is correct
3 Correct 14 ms 23808 KB Output is correct
4 Correct 13 ms 23808 KB Output is correct
5 Correct 13 ms 23808 KB Output is correct
6 Correct 15 ms 23748 KB Output is correct
7 Correct 12 ms 23808 KB Output is correct
8 Correct 13 ms 23808 KB Output is correct
9 Correct 13 ms 23808 KB Output is correct
10 Correct 12 ms 23808 KB Output is correct
11 Correct 15 ms 23808 KB Output is correct
12 Correct 17 ms 23808 KB Output is correct
13 Correct 14 ms 23808 KB Output is correct
14 Correct 16 ms 23808 KB Output is correct
15 Correct 14 ms 23808 KB Output is correct
16 Correct 14 ms 23848 KB Output is correct
17 Correct 14 ms 23808 KB Output is correct
18 Correct 14 ms 23808 KB Output is correct
19 Correct 16 ms 23808 KB Output is correct
20 Correct 16 ms 23808 KB Output is correct
21 Correct 16 ms 23864 KB Output is correct
22 Correct 14 ms 23808 KB Output is correct
23 Correct 14 ms 23808 KB Output is correct
24 Correct 13 ms 23808 KB Output is correct
25 Correct 14 ms 23808 KB Output is correct
26 Correct 13 ms 23808 KB Output is correct
27 Correct 12 ms 23808 KB Output is correct
28 Correct 16 ms 23860 KB Output is correct
29 Correct 13 ms 23808 KB Output is correct
30 Correct 22 ms 23808 KB Output is correct
31 Correct 12 ms 23808 KB Output is correct
32 Correct 12 ms 23808 KB Output is correct
33 Correct 14 ms 23868 KB Output is correct
34 Correct 16 ms 23808 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23808 KB Output is correct
2 Correct 13 ms 23808 KB Output is correct
3 Correct 14 ms 23808 KB Output is correct
4 Correct 13 ms 23808 KB Output is correct
5 Correct 13 ms 23808 KB Output is correct
6 Correct 15 ms 23748 KB Output is correct
7 Correct 12 ms 23808 KB Output is correct
8 Correct 13 ms 23808 KB Output is correct
9 Correct 13 ms 23808 KB Output is correct
10 Correct 12 ms 23808 KB Output is correct
11 Correct 15 ms 23808 KB Output is correct
12 Correct 17 ms 23808 KB Output is correct
13 Correct 14 ms 23808 KB Output is correct
14 Correct 16 ms 23808 KB Output is correct
15 Correct 14 ms 23808 KB Output is correct
16 Correct 14 ms 23848 KB Output is correct
17 Correct 14 ms 23808 KB Output is correct
18 Correct 14 ms 23808 KB Output is correct
19 Correct 16 ms 23808 KB Output is correct
20 Correct 16 ms 23808 KB Output is correct
21 Correct 16 ms 23864 KB Output is correct
22 Correct 14 ms 23808 KB Output is correct
23 Correct 14 ms 23808 KB Output is correct
24 Correct 13 ms 23808 KB Output is correct
25 Correct 14 ms 23808 KB Output is correct
26 Correct 13 ms 23808 KB Output is correct
27 Correct 12 ms 23808 KB Output is correct
28 Correct 16 ms 23860 KB Output is correct
29 Correct 13 ms 23808 KB Output is correct
30 Correct 22 ms 23808 KB Output is correct
31 Correct 12 ms 23808 KB Output is correct
32 Correct 12 ms 23808 KB Output is correct
33 Correct 14 ms 23868 KB Output is correct
34 Correct 16 ms 23808 KB Output is correct
35 Correct 17 ms 24056 KB Output is correct
36 Correct 15 ms 24056 KB Output is correct
37 Correct 15 ms 24056 KB Output is correct
38 Correct 14 ms 24064 KB Output is correct
39 Correct 15 ms 24064 KB Output is correct
40 Correct 16 ms 24192 KB Output is correct
41 Correct 13 ms 24064 KB Output is correct
42 Correct 13 ms 24056 KB Output is correct
43 Correct 13 ms 24064 KB Output is correct
44 Correct 13 ms 24064 KB Output is correct
45 Correct 14 ms 24064 KB Output is correct
46 Correct 13 ms 24064 KB Output is correct
47 Correct 13 ms 24064 KB Output is correct
48 Correct 15 ms 24064 KB Output is correct
49 Correct 15 ms 24064 KB Output is correct
50 Correct 15 ms 24076 KB Output is correct
51 Correct 16 ms 23984 KB Output is correct
52 Correct 15 ms 23936 KB Output is correct
53 Correct 13 ms 24064 KB Output is correct
54 Correct 13 ms 24064 KB Output is correct
55 Correct 15 ms 24064 KB Output is correct
56 Correct 14 ms 24012 KB Output is correct
57 Correct 12 ms 23968 KB Output is correct
58 Correct 13 ms 23968 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23808 KB Output is correct
2 Correct 14 ms 23848 KB Output is correct
3 Correct 16 ms 23808 KB Output is correct
4 Correct 14 ms 23808 KB Output is correct
5 Correct 15 ms 23808 KB Output is correct
6 Correct 15 ms 23808 KB Output is correct
7 Correct 148 ms 121804 KB Output is correct
8 Correct 148 ms 121800 KB Output is correct
9 Correct 155 ms 121932 KB Output is correct
10 Correct 153 ms 121808 KB Output is correct
11 Correct 158 ms 121876 KB Output is correct
12 Correct 153 ms 121804 KB Output is correct
13 Correct 152 ms 121932 KB Output is correct
14 Correct 148 ms 121804 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23808 KB Output is correct
2 Correct 13 ms 23808 KB Output is correct
3 Correct 14 ms 23808 KB Output is correct
4 Correct 13 ms 23808 KB Output is correct
5 Correct 13 ms 23808 KB Output is correct
6 Correct 15 ms 23748 KB Output is correct
7 Correct 12 ms 23808 KB Output is correct
8 Correct 13 ms 23808 KB Output is correct
9 Correct 13 ms 23808 KB Output is correct
10 Correct 12 ms 23808 KB Output is correct
11 Correct 15 ms 23808 KB Output is correct
12 Correct 17 ms 23808 KB Output is correct
13 Correct 14 ms 23808 KB Output is correct
14 Correct 16 ms 23808 KB Output is correct
15 Correct 14 ms 23808 KB Output is correct
16 Correct 14 ms 23848 KB Output is correct
17 Correct 14 ms 23808 KB Output is correct
18 Correct 14 ms 23808 KB Output is correct
19 Correct 16 ms 23808 KB Output is correct
20 Correct 16 ms 23808 KB Output is correct
21 Correct 16 ms 23864 KB Output is correct
22 Correct 14 ms 23808 KB Output is correct
23 Correct 14 ms 23808 KB Output is correct
24 Correct 13 ms 23808 KB Output is correct
25 Correct 14 ms 23808 KB Output is correct
26 Correct 13 ms 23808 KB Output is correct
27 Correct 12 ms 23808 KB Output is correct
28 Correct 16 ms 23860 KB Output is correct
29 Correct 13 ms 23808 KB Output is correct
30 Correct 22 ms 23808 KB Output is correct
31 Correct 12 ms 23808 KB Output is correct
32 Correct 12 ms 23808 KB Output is correct
33 Correct 14 ms 23868 KB Output is correct
34 Correct 16 ms 23808 KB Output is correct
35 Correct 17 ms 24056 KB Output is correct
36 Correct 15 ms 24056 KB Output is correct
37 Correct 15 ms 24056 KB Output is correct
38 Correct 14 ms 24064 KB Output is correct
39 Correct 15 ms 24064 KB Output is correct
40 Correct 16 ms 24192 KB Output is correct
41 Correct 13 ms 24064 KB Output is correct
42 Correct 13 ms 24056 KB Output is correct
43 Correct 13 ms 24064 KB Output is correct
44 Correct 13 ms 24064 KB Output is correct
45 Correct 14 ms 24064 KB Output is correct
46 Correct 13 ms 24064 KB Output is correct
47 Correct 13 ms 24064 KB Output is correct
48 Correct 15 ms 24064 KB Output is correct
49 Correct 15 ms 24064 KB Output is correct
50 Correct 15 ms 24076 KB Output is correct
51 Correct 16 ms 23984 KB Output is correct
52 Correct 15 ms 23936 KB Output is correct
53 Correct 13 ms 24064 KB Output is correct
54 Correct 13 ms 24064 KB Output is correct
55 Correct 15 ms 24064 KB Output is correct
56 Correct 14 ms 24012 KB Output is correct
57 Correct 12 ms 23968 KB Output is correct
58 Correct 13 ms 23968 KB Output is correct
59 Correct 12 ms 23808 KB Output is correct
60 Correct 14 ms 23848 KB Output is correct
61 Correct 16 ms 23808 KB Output is correct
62 Correct 14 ms 23808 KB Output is correct
63 Correct 15 ms 23808 KB Output is correct
64 Correct 15 ms 23808 KB Output is correct
65 Correct 148 ms 121804 KB Output is correct
66 Correct 148 ms 121800 KB Output is correct
67 Correct 155 ms 121932 KB Output is correct
68 Correct 153 ms 121808 KB Output is correct
69 Correct 158 ms 121876 KB Output is correct
70 Correct 153 ms 121804 KB Output is correct
71 Correct 152 ms 121932 KB Output is correct
72 Correct 148 ms 121804 KB Output is correct
73 Correct 160 ms 121872 KB Output is correct
74 Correct 165 ms 121876 KB Output is correct
75 Correct 161 ms 121800 KB Output is correct
76 Correct 160 ms 121800 KB Output is correct
77 Correct 156 ms 121924 KB Output is correct
78 Correct 203 ms 121872 KB Output is correct
79 Correct 169 ms 121800 KB Output is correct
80 Correct 168 ms 121804 KB Output is correct
81 Correct 160 ms 121804 KB Output is correct
82 Correct 167 ms 121804 KB Output is correct
83 Correct 177 ms 121928 KB Output is correct
84 Correct 200 ms 121928 KB Output is correct
85 Correct 165 ms 121804 KB Output is correct
86 Correct 165 ms 121932 KB Output is correct
87 Correct 162 ms 121800 KB Output is correct
88 Correct 158 ms 121932 KB Output is correct
89 Correct 179 ms 121836 KB Output is correct
90 Correct 162 ms 121804 KB Output is correct
91 Correct 176 ms 121932 KB Output is correct
92 Correct 170 ms 121804 KB Output is correct
93 Correct 174 ms 121808 KB Output is correct
94 Correct 176 ms 121932 KB Output is correct
95 Correct 174 ms 121808 KB Output is correct
96 Correct 195 ms 121980 KB Output is correct
97 Correct 171 ms 121804 KB Output is correct
98 Correct 172 ms 121876 KB Output is correct
99 Correct 261 ms 121804 KB Output is correct
100 Correct 234 ms 121928 KB Output is correct
101 Correct 178 ms 121876 KB Output is correct
102 Correct 178 ms 121932 KB Output is correct