oj.uz

Submission #105076

# Submission time Handle Problem Language Result Execution time Memory
105076 2019-04-10T13:45:01 Z Just_Solve_The_Problem Lamps (JOI19_lamps) C++11
100 / 100
 187 ms 28344 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = (int)1e6 + 7;

string a, b;
int n;
int dp[N][3][2];
/*
dp[pos][operation][xor]
operation
0 = off
1 = on
2 = do not touch
*/

main() {
	memset(dp, 63, sizeof dp);
	scanf("%d", &n);
	cin >> a >> b;
	a = " " + a;
	b = " " + b;
	dp[0][2][0] = 0;
	for (int i = 1; i <= n; i++) {
		for (int j = 0; j < 3; j++) {
			if (b[i] - '0' == j) {
				dp[i][j][0] = min(dp[i][j][0], dp[i - 1][j][0]);
				dp[i][j][0] = min(dp[i][j][0], dp[i - 1][j][1]);
				for (int l = 0; l < 3; l++) {
					dp[i][j][0] = min(dp[i][j][0], dp[i - 1][l][0] + 1);
					dp[i][j][0] = min(dp[i][j][0], dp[i - 1][l][1] + 1);
				}
			}
			if (b[i] - '0' == (j ^ 1)) {
				dp[i][j][1] = min(dp[i][j][1], dp[i - 1][j][1]);
				dp[i][j][1] = min(dp[i][j][1], dp[i - 1][j][0] + 1);
				for (int l = 0; l < 3; l++) {
					dp[i][j][1] = min(dp[i][j][1], dp[i - 1][l][1] + 1);
				}
			}
			if (j == 2 && b[i] == a[i]) {
				for (int l = 0; l < 3; l++) {
					dp[i][j][0] = min(dp[i][j][0], dp[i - 1][l][0]);
					dp[i][j][0] = min(dp[i][j][0], dp[i - 1][l][1]);
				}
			}
			if (j == 2 && b[i] != a[i]) {
				for (int l = 0; l < 3; l++) {
					dp[i][j][1] = min(dp[i][j][1], dp[i - 1][l][0] + 1);
					dp[i][j][1] = min(dp[i][j][1], dp[i - 1][l][1]);
				}
			}
		}
	}
	int ans = dp[0][1][0];
	for (int i = 0; i < 3; i++) {
		for (int j = 0; j < 2; j++) {
			ans = min(ans, dp[n][i][j]);
		}
	}
	printf("%d\n", ans);
}

Compilation message

lamp.cpp:18:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
lamp.cpp: In function 'int main()':
lamp.cpp:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 23808 KB Output is correct
2 Correct 23 ms 23808 KB Output is correct
3 Correct 23 ms 23800 KB Output is correct
4 Correct 24 ms 23808 KB Output is correct
5 Correct 23 ms 23772 KB Output is correct
6 Correct 24 ms 23808 KB Output is correct
7 Correct 21 ms 23800 KB Output is correct
8 Correct 20 ms 23808 KB Output is correct
9 Correct 22 ms 23808 KB Output is correct
10 Correct 23 ms 23800 KB Output is correct
11 Correct 23 ms 23808 KB Output is correct
12 Correct 25 ms 23784 KB Output is correct
13 Correct 22 ms 23800 KB Output is correct
14 Correct 23 ms 23780 KB Output is correct
15 Correct 23 ms 23808 KB Output is correct
16 Correct 24 ms 23800 KB Output is correct
17 Correct 23 ms 23800 KB Output is correct
18 Correct 22 ms 23800 KB Output is correct
19 Correct 22 ms 23808 KB Output is correct
20 Correct 27 ms 23936 KB Output is correct
21 Correct 24 ms 23808 KB Output is correct
22 Correct 23 ms 23808 KB Output is correct
23 Correct 26 ms 23800 KB Output is correct
24 Correct 22 ms 23808 KB Output is correct
25 Correct 21 ms 23808 KB Output is correct
26 Correct 23 ms 23808 KB Output is correct
27 Correct 23 ms 23808 KB Output is correct
28 Correct 24 ms 23808 KB Output is correct
29 Correct 22 ms 23808 KB Output is correct
30 Correct 26 ms 23800 KB Output is correct
31 Correct 22 ms 23800 KB Output is correct
32 Correct 24 ms 23808 KB Output is correct
33 Correct 21 ms 23800 KB Output is correct
34 Correct 23 ms 23772 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 23808 KB Output is correct
2 Correct 23 ms 23808 KB Output is correct
3 Correct 23 ms 23800 KB Output is correct
4 Correct 24 ms 23808 KB Output is correct
5 Correct 23 ms 23772 KB Output is correct
6 Correct 24 ms 23808 KB Output is correct
7 Correct 21 ms 23800 KB Output is correct
8 Correct 20 ms 23808 KB Output is correct
9 Correct 22 ms 23808 KB Output is correct
10 Correct 23 ms 23800 KB Output is correct
11 Correct 23 ms 23808 KB Output is correct
12 Correct 25 ms 23784 KB Output is correct
13 Correct 22 ms 23800 KB Output is correct
14 Correct 23 ms 23780 KB Output is correct
15 Correct 23 ms 23808 KB Output is correct
16 Correct 24 ms 23800 KB Output is correct
17 Correct 23 ms 23800 KB Output is correct
18 Correct 22 ms 23800 KB Output is correct
19 Correct 22 ms 23808 KB Output is correct
20 Correct 27 ms 23936 KB Output is correct
21 Correct 24 ms 23808 KB Output is correct
22 Correct 23 ms 23808 KB Output is correct
23 Correct 26 ms 23800 KB Output is correct
24 Correct 22 ms 23808 KB Output is correct
25 Correct 21 ms 23808 KB Output is correct
26 Correct 23 ms 23808 KB Output is correct
27 Correct 23 ms 23808 KB Output is correct
28 Correct 24 ms 23808 KB Output is correct
29 Correct 22 ms 23808 KB Output is correct
30 Correct 26 ms 23800 KB Output is correct
31 Correct 22 ms 23800 KB Output is correct
32 Correct 24 ms 23808 KB Output is correct
33 Correct 21 ms 23800 KB Output is correct
34 Correct 23 ms 23772 KB Output is correct
35 Correct 23 ms 23840 KB Output is correct
36 Correct 26 ms 23752 KB Output is correct
37 Correct 24 ms 23884 KB Output is correct
38 Correct 25 ms 23808 KB Output is correct
39 Correct 23 ms 23808 KB Output is correct
40 Correct 23 ms 23808 KB Output is correct
41 Correct 27 ms 23808 KB Output is correct
42 Correct 24 ms 23808 KB Output is correct
43 Correct 23 ms 23800 KB Output is correct
44 Correct 23 ms 23808 KB Output is correct
45 Correct 27 ms 23800 KB Output is correct
46 Correct 19 ms 23808 KB Output is correct
47 Correct 24 ms 23780 KB Output is correct
48 Correct 23 ms 23808 KB Output is correct
49 Correct 27 ms 23852 KB Output is correct
50 Correct 27 ms 23808 KB Output is correct
51 Correct 22 ms 23928 KB Output is correct
52 Correct 25 ms 23808 KB Output is correct
53 Correct 23 ms 23936 KB Output is correct
54 Correct 21 ms 23808 KB Output is correct
55 Correct 23 ms 23936 KB Output is correct
56 Correct 23 ms 23808 KB Output is correct
57 Correct 23 ms 23808 KB Output is correct
58 Correct 22 ms 23800 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23800 KB Output is correct
2 Correct 22 ms 23800 KB Output is correct
3 Correct 22 ms 23808 KB Output is correct
4 Correct 23 ms 23808 KB Output is correct
5 Correct 23 ms 23808 KB Output is correct
6 Correct 22 ms 23808 KB Output is correct
7 Correct 144 ms 28108 KB Output is correct
8 Correct 110 ms 28268 KB Output is correct
9 Correct 126 ms 28312 KB Output is correct
10 Correct 107 ms 28268 KB Output is correct
11 Correct 101 ms 28268 KB Output is correct
12 Correct 108 ms 28344 KB Output is correct
13 Correct 114 ms 28228 KB Output is correct
14 Correct 124 ms 28268 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 23808 KB Output is correct
2 Correct 23 ms 23808 KB Output is correct
3 Correct 23 ms 23800 KB Output is correct
4 Correct 24 ms 23808 KB Output is correct
5 Correct 23 ms 23772 KB Output is correct
6 Correct 24 ms 23808 KB Output is correct
7 Correct 21 ms 23800 KB Output is correct
8 Correct 20 ms 23808 KB Output is correct
9 Correct 22 ms 23808 KB Output is correct
10 Correct 23 ms 23800 KB Output is correct
11 Correct 23 ms 23808 KB Output is correct
12 Correct 25 ms 23784 KB Output is correct
13 Correct 22 ms 23800 KB Output is correct
14 Correct 23 ms 23780 KB Output is correct
15 Correct 23 ms 23808 KB Output is correct
16 Correct 24 ms 23800 KB Output is correct
17 Correct 23 ms 23800 KB Output is correct
18 Correct 22 ms 23800 KB Output is correct
19 Correct 22 ms 23808 KB Output is correct
20 Correct 27 ms 23936 KB Output is correct
21 Correct 24 ms 23808 KB Output is correct
22 Correct 23 ms 23808 KB Output is correct
23 Correct 26 ms 23800 KB Output is correct
24 Correct 22 ms 23808 KB Output is correct
25 Correct 21 ms 23808 KB Output is correct
26 Correct 23 ms 23808 KB Output is correct
27 Correct 23 ms 23808 KB Output is correct
28 Correct 24 ms 23808 KB Output is correct
29 Correct 22 ms 23808 KB Output is correct
30 Correct 26 ms 23800 KB Output is correct
31 Correct 22 ms 23800 KB Output is correct
32 Correct 24 ms 23808 KB Output is correct
33 Correct 21 ms 23800 KB Output is correct
34 Correct 23 ms 23772 KB Output is correct
35 Correct 23 ms 23840 KB Output is correct
36 Correct 26 ms 23752 KB Output is correct
37 Correct 24 ms 23884 KB Output is correct
38 Correct 25 ms 23808 KB Output is correct
39 Correct 23 ms 23808 KB Output is correct
40 Correct 23 ms 23808 KB Output is correct
41 Correct 27 ms 23808 KB Output is correct
42 Correct 24 ms 23808 KB Output is correct
43 Correct 23 ms 23800 KB Output is correct
44 Correct 23 ms 23808 KB Output is correct
45 Correct 27 ms 23800 KB Output is correct
46 Correct 19 ms 23808 KB Output is correct
47 Correct 24 ms 23780 KB Output is correct
48 Correct 23 ms 23808 KB Output is correct
49 Correct 27 ms 23852 KB Output is correct
50 Correct 27 ms 23808 KB Output is correct
51 Correct 22 ms 23928 KB Output is correct
52 Correct 25 ms 23808 KB Output is correct
53 Correct 23 ms 23936 KB Output is correct
54 Correct 21 ms 23808 KB Output is correct
55 Correct 23 ms 23936 KB Output is correct
56 Correct 23 ms 23808 KB Output is correct
57 Correct 23 ms 23808 KB Output is correct
58 Correct 22 ms 23800 KB Output is correct
59 Correct 23 ms 23800 KB Output is correct
60 Correct 22 ms 23800 KB Output is correct
61 Correct 22 ms 23808 KB Output is correct
62 Correct 23 ms 23808 KB Output is correct
63 Correct 23 ms 23808 KB Output is correct
64 Correct 22 ms 23808 KB Output is correct
65 Correct 144 ms 28108 KB Output is correct
66 Correct 110 ms 28268 KB Output is correct
67 Correct 126 ms 28312 KB Output is correct
68 Correct 107 ms 28268 KB Output is correct
69 Correct 101 ms 28268 KB Output is correct
70 Correct 108 ms 28344 KB Output is correct
71 Correct 114 ms 28228 KB Output is correct
72 Correct 124 ms 28268 KB Output is correct
73 Correct 122 ms 28236 KB Output is correct
74 Correct 115 ms 28060 KB Output is correct
75 Correct 124 ms 27980 KB Output is correct
76 Correct 99 ms 28008 KB Output is correct
77 Correct 107 ms 28008 KB Output is correct
78 Correct 127 ms 28008 KB Output is correct
79 Correct 120 ms 28032 KB Output is correct
80 Correct 120 ms 27984 KB Output is correct
81 Correct 116 ms 27988 KB Output is correct
82 Correct 110 ms 28300 KB Output is correct
83 Correct 107 ms 28092 KB Output is correct
84 Correct 113 ms 28008 KB Output is correct
85 Correct 123 ms 27940 KB Output is correct
86 Correct 114 ms 28080 KB Output is correct
87 Correct 157 ms 28108 KB Output is correct
88 Correct 187 ms 27924 KB Output is correct
89 Correct 119 ms 28008 KB Output is correct
90 Correct 163 ms 27980 KB Output is correct
91 Correct 160 ms 28008 KB Output is correct
92 Correct 128 ms 28008 KB Output is correct
93 Correct 110 ms 28004 KB Output is correct
94 Correct 148 ms 28012 KB Output is correct
95 Correct 131 ms 28036 KB Output is correct
96 Correct 114 ms 27832 KB Output is correct
97 Correct 118 ms 28008 KB Output is correct
98 Correct 115 ms 28056 KB Output is correct
99 Correct 145 ms 27996 KB Output is correct
100 Correct 159 ms 28028 KB Output is correct
101 Correct 135 ms 27980 KB Output is correct
102 Correct 116 ms 28120 KB Output is correct