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Submission #823420

# Submission time Handle Problem Language Result Execution time Memory
823420 2023-08-12T13:48:46 Z yanndev Lamps (JOI19_lamps) C++17
100 / 100
 167 ms 31700 KB 
#include <bits/stdc++.h>
using namespace std;

const int INF = 1e9;
const int MX = (int)1e6 + 42;
int dp[MX][3][2];

void solve(int tcId) {
    int n;
    cin >> n;
    vector<int> a (n + 1, 0);
    vector<int> b (n + 1, 0);

    for (int i = 1; i <= n; i++) {
        char v;
        cin >> v;
        a[i] = v - '0';
    }

    for (int i = 1; i <= n; i++) {
        char v;
        cin >> v;
        b[i] = v - '0';
    }

    for (int i = 0; i <= n; i++)
        for (int j = 0; j < 3; j++)
            for (int k = 0; k < 2; k++)
                dp[i][j][k] = INF;
    
    dp[0][2][0] = 0;
    for (int i = 1; i <= n; i++) {
        for (int j = 0; j < 3; j++) {
            for (int k = 0; k < 2; k++) {
                for (int pJ = 0; pJ < 3; pJ++) {
                    for (int pk = 0; pk < 2; pk++) {
                        if (dp[i - 1][pJ][pk] == INF) continue;
                        int cnt = 0;
                        if (pJ != j && j != 2)
                            cnt++;
                        if (k != pk && k != 0)
                            cnt++;
                        int v = a[i];
                        if (j == 0) v = 0;
                        else if (j == 1) v = 1;
                        if (k) v ^= 1;
                        if (v == b[i])
                            dp[i][j][k] = min(dp[i][j][k], dp[i - 1][pJ][pk] + cnt);
                    }
                }
            }
        }
    }

    int ans = 1e9;
    for (int i = 0; i < 3; i++)
        for (int j = 0; j < 2; j++)
            ans = min(ans, dp[n][i][j]);
    cout << ans << '\n';
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    solve(42);
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 292 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 130 ms 31588 KB Output is correct
8 Correct 137 ms 31592 KB Output is correct
9 Correct 139 ms 31608 KB Output is correct
10 Correct 145 ms 31628 KB Output is correct
11 Correct 138 ms 31628 KB Output is correct
12 Correct 131 ms 31632 KB Output is correct
13 Correct 136 ms 31564 KB Output is correct
14 Correct 132 ms 31636 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 292 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 0 ms 212 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 130 ms 31588 KB Output is correct
66 Correct 137 ms 31592 KB Output is correct
67 Correct 139 ms 31608 KB Output is correct
68 Correct 145 ms 31628 KB Output is correct
69 Correct 138 ms 31628 KB Output is correct
70 Correct 131 ms 31632 KB Output is correct
71 Correct 136 ms 31564 KB Output is correct
72 Correct 132 ms 31636 KB Output is correct
73 Correct 138 ms 31592 KB Output is correct
74 Correct 137 ms 31636 KB Output is correct
75 Correct 139 ms 31628 KB Output is correct
76 Correct 139 ms 31620 KB Output is correct
77 Correct 147 ms 31700 KB Output is correct
78 Correct 138 ms 31564 KB Output is correct
79 Correct 146 ms 31628 KB Output is correct
80 Correct 140 ms 31620 KB Output is correct
81 Correct 147 ms 31632 KB Output is correct
82 Correct 135 ms 31596 KB Output is correct
83 Correct 143 ms 31628 KB Output is correct
84 Correct 147 ms 31628 KB Output is correct
85 Correct 153 ms 31592 KB Output is correct
86 Correct 145 ms 31628 KB Output is correct
87 Correct 148 ms 31632 KB Output is correct
88 Correct 167 ms 31572 KB Output is correct
89 Correct 151 ms 31632 KB Output is correct
90 Correct 147 ms 31588 KB Output is correct
91 Correct 166 ms 31600 KB Output is correct
92 Correct 160 ms 31596 KB Output is correct
93 Correct 165 ms 31636 KB Output is correct
94 Correct 160 ms 31632 KB Output is correct
95 Correct 161 ms 31588 KB Output is correct
96 Correct 159 ms 31572 KB Output is correct
97 Correct 161 ms 31520 KB Output is correct
98 Correct 159 ms 31628 KB Output is correct
99 Correct 161 ms 31628 KB Output is correct
100 Correct 164 ms 31572 KB Output is correct
101 Correct 160 ms 31548 KB Output is correct
102 Correct 158 ms 31588 KB Output is correct