oj.uz

Submission #102515

# Submission time Handle Problem Language Result Execution time Memory
102515 2019-03-25T13:51:05 Z ruhanhabib39 Lamps (JOI19_lamps) C++17
100 / 100
 49 ms 19988 KB 
#include <bits/stdc++.h>
using namespace std;

const int INF = 1e9;
const int MAXN = 1e6;

int N;
char A[MAXN + 10], B[MAXN + 10];
int dp[MAXN + 10][2][2];

int main() {
   scanf("%d%s%s", &N, A+1, B+1);
   A[0] = B[0] = '0';

   for(int i = 0; i <= N; i++) {
      for(int a : {0, 1}) {
         for(int t : {0, 1}) {
            dp[i][a][t] = INF;
         }
      }
   }

   dp[0][0][0] = 0;
   for(int i = 1; i <= N; i++) {
      {
         int& ref = dp[i][0][0];
         if(A[i] == B[i]) {
            ref = min({ref, dp[i-1][0][0], dp[i-1][0][1], dp[i-1][1][0], dp[i-1][1][1]});
         }
      }

      {
         int& ref = dp[i][0][1];
         if(A[i] != B[i]) {
            ref = min({ref, dp[i-1][0][0] + 1, dp[i-1][0][1], dp[i-1][1][0] + 1, dp[i-1][1][1]});
         }
      }

      {
         int& ref = dp[i][1][0];
         if(B[i-1] == B[i]) {
            ref = min({ref, dp[i-1][1][0]});
         }
         ref = min({ref, dp[i-1][0][0] + 1, dp[i-1][0][1] + 1, dp[i-1][1][1]});
      }

      {
         int& ref = dp[i][1][1];
         if(B[i-1] == B[i]) {
            ref = min({ref, dp[i-1][1][1]});
         } else {
            ref = min({ref, dp[i-1][1][0] + 1});
         }
         ref = min({ref, dp[i-1][0][0] + 2, dp[i-1][0][1] + 1});
      }

   }

   int res = INF;
   for(int a : {0, 1}) {
      for(int t : {0, 1}) {
         res = min(res, dp[N][a][t]);
      }
   }
   printf("%d\n", res);
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:12:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d%s%s", &N, A+1, B+1);
    ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 256 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 3 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 2 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 3 ms 384 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 256 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 3 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 2 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 3 ms 384 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 2 ms 384 KB Output is correct
37 Correct 3 ms 384 KB Output is correct
38 Correct 2 ms 384 KB Output is correct
39 Correct 2 ms 384 KB Output is correct
40 Correct 3 ms 384 KB Output is correct
41 Correct 2 ms 384 KB Output is correct
42 Correct 3 ms 384 KB Output is correct
43 Correct 2 ms 384 KB Output is correct
44 Correct 2 ms 384 KB Output is correct
45 Correct 2 ms 384 KB Output is correct
46 Correct 3 ms 384 KB Output is correct
47 Correct 2 ms 384 KB Output is correct
48 Correct 2 ms 384 KB Output is correct
49 Correct 3 ms 384 KB Output is correct
50 Correct 2 ms 384 KB Output is correct
51 Correct 2 ms 384 KB Output is correct
52 Correct 2 ms 384 KB Output is correct
53 Correct 2 ms 384 KB Output is correct
54 Correct 2 ms 384 KB Output is correct
55 Correct 3 ms 384 KB Output is correct
56 Correct 2 ms 384 KB Output is correct
57 Correct 2 ms 384 KB Output is correct
58 Correct 2 ms 384 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 37 ms 19840 KB Output is correct
8 Correct 32 ms 19832 KB Output is correct
9 Correct 35 ms 19832 KB Output is correct
10 Correct 42 ms 19840 KB Output is correct
11 Correct 31 ms 19832 KB Output is correct
12 Correct 32 ms 19832 KB Output is correct
13 Correct 35 ms 19924 KB Output is correct
14 Correct 34 ms 19840 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 256 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 3 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 2 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 3 ms 384 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 2 ms 384 KB Output is correct
37 Correct 3 ms 384 KB Output is correct
38 Correct 2 ms 384 KB Output is correct
39 Correct 2 ms 384 KB Output is correct
40 Correct 3 ms 384 KB Output is correct
41 Correct 2 ms 384 KB Output is correct
42 Correct 3 ms 384 KB Output is correct
43 Correct 2 ms 384 KB Output is correct
44 Correct 2 ms 384 KB Output is correct
45 Correct 2 ms 384 KB Output is correct
46 Correct 3 ms 384 KB Output is correct
47 Correct 2 ms 384 KB Output is correct
48 Correct 2 ms 384 KB Output is correct
49 Correct 3 ms 384 KB Output is correct
50 Correct 2 ms 384 KB Output is correct
51 Correct 2 ms 384 KB Output is correct
52 Correct 2 ms 384 KB Output is correct
53 Correct 2 ms 384 KB Output is correct
54 Correct 2 ms 384 KB Output is correct
55 Correct 3 ms 384 KB Output is correct
56 Correct 2 ms 384 KB Output is correct
57 Correct 2 ms 384 KB Output is correct
58 Correct 2 ms 384 KB Output is correct
59 Correct 3 ms 384 KB Output is correct
60 Correct 3 ms 384 KB Output is correct
61 Correct 2 ms 384 KB Output is correct
62 Correct 2 ms 384 KB Output is correct
63 Correct 3 ms 384 KB Output is correct
64 Correct 2 ms 384 KB Output is correct
65 Correct 37 ms 19840 KB Output is correct
66 Correct 32 ms 19832 KB Output is correct
67 Correct 35 ms 19832 KB Output is correct
68 Correct 42 ms 19840 KB Output is correct
69 Correct 31 ms 19832 KB Output is correct
70 Correct 32 ms 19832 KB Output is correct
71 Correct 35 ms 19924 KB Output is correct
72 Correct 34 ms 19840 KB Output is correct
73 Correct 36 ms 19832 KB Output is correct
74 Correct 34 ms 19832 KB Output is correct
75 Correct 33 ms 19960 KB Output is correct
76 Correct 34 ms 19960 KB Output is correct
77 Correct 36 ms 19840 KB Output is correct
78 Correct 38 ms 19840 KB Output is correct
79 Correct 39 ms 19832 KB Output is correct
80 Correct 33 ms 19832 KB Output is correct
81 Correct 42 ms 19832 KB Output is correct
82 Correct 46 ms 19932 KB Output is correct
83 Correct 43 ms 19952 KB Output is correct
84 Correct 49 ms 19912 KB Output is correct
85 Correct 39 ms 19832 KB Output is correct
86 Correct 36 ms 19832 KB Output is correct
87 Correct 37 ms 19832 KB Output is correct
88 Correct 43 ms 19988 KB Output is correct
89 Correct 37 ms 19840 KB Output is correct
90 Correct 37 ms 19832 KB Output is correct
91 Correct 41 ms 19840 KB Output is correct
92 Correct 41 ms 19832 KB Output is correct
93 Correct 41 ms 19832 KB Output is correct
94 Correct 45 ms 19960 KB Output is correct
95 Correct 43 ms 19832 KB Output is correct
96 Correct 39 ms 19832 KB Output is correct
97 Correct 39 ms 19828 KB Output is correct
98 Correct 40 ms 19832 KB Output is correct
99 Correct 45 ms 19880 KB Output is correct
100 Correct 41 ms 19816 KB Output is correct
101 Correct 41 ms 19832 KB Output is correct
102 Correct 47 ms 19832 KB Output is correct