oj.uz

Submission #107552

# Submission time Handle Problem Language Result Execution time Memory
107552 2019-04-25T04:11:19 Z shoemakerjo Lamps (JOI19_lamps) C++14
100 / 100
 225 ms 24040 KB 
#include <bits/stdc++.h>

using namespace std;

int n;
string a, b;

const int maxn = 1000010;
int dp[maxn][5];
//0 is nothing on me
//1 is a '0' on me
//2 is a '1' on me
//3 is a '0' on top of a '1'
//4 is a '1' on top of a '0'

const int cost[5][5] =
  {{0, 1, 1, 2, 2},
  {0, 0, 1, 1, 2},
  {0, 1, 0, 2, 1},
  {0, 0, 0, 0, 1},
  {0, 0, 0, 1, 0}};

bool issame(int u, int tp) {
  if (u == 0) return true;
  if (tp == 0) {
    return a[u] == b[u];
  }
  if (tp == 2 || tp == 4) {
    return b[u] == '1';
  }
  if (tp == 1 || tp == 3) {
    return b[u] == '0';
  }
  return false;
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cin >> n;
  cin >> a >> b;
  a = " " + a;
  b = " " + b;

  for (int i = 1; i < 5; i++) {
    dp[0][i] = n;
  }

  for (int i = 1; i <= n; i++) {
    for (int j = 0; j < 5; j++) {
      dp[i][j] = n;
      for (int k = 0; k < 5; k++) {
        //get to j from k
        dp[i][j] = min(dp[i][j],
          dp[i-1][k] + cost[k][j] +
          ((!issame(i, j) && issame(i-1, k)) ? 1 : 0) );
      }
    }
    // cout << i << " : " ;
    // for (int j = 0; j < 5; j++) {
    //   cout << dp[i][j] << " ";
    // }
    // cout << endl;
  }

  // cout << "v : " << issame(1, 0) << endl;

  int res = n;
  for (int i = 0; i < 5; i++) {
    res = min(res, dp[n][i]);
  }
  cout << res << endl;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 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 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 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 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 2 ms 384 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 356 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 2 ms 384 KB Output is correct
34 Correct 2 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 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 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 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 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 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 2 ms 384 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 356 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 2 ms 384 KB Output is correct
34 Correct 2 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 3 ms 384 KB Output is correct
39 Correct 3 ms 384 KB Output is correct
40 Correct 3 ms 384 KB Output is correct
41 Correct 3 ms 384 KB Output is correct
42 Correct 3 ms 384 KB Output is correct
43 Correct 3 ms 384 KB Output is correct
44 Correct 3 ms 384 KB Output is correct
45 Correct 3 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 3 ms 384 KB Output is correct
52 Correct 3 ms 384 KB Output is correct
53 Correct 3 ms 384 KB Output is correct
54 Correct 3 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 3 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 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 195 ms 23684 KB Output is correct
8 Correct 179 ms 23968 KB Output is correct
9 Correct 177 ms 23832 KB Output is correct
10 Correct 198 ms 23832 KB Output is correct
11 Correct 179 ms 23836 KB Output is correct
12 Correct 202 ms 24040 KB Output is correct
13 Correct 162 ms 23892 KB Output is correct
14 Correct 152 ms 23748 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 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 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 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 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 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 2 ms 384 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 356 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 2 ms 384 KB Output is correct
34 Correct 2 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 3 ms 384 KB Output is correct
39 Correct 3 ms 384 KB Output is correct
40 Correct 3 ms 384 KB Output is correct
41 Correct 3 ms 384 KB Output is correct
42 Correct 3 ms 384 KB Output is correct
43 Correct 3 ms 384 KB Output is correct
44 Correct 3 ms 384 KB Output is correct
45 Correct 3 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 3 ms 384 KB Output is correct
52 Correct 3 ms 384 KB Output is correct
53 Correct 3 ms 384 KB Output is correct
54 Correct 3 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 3 ms 384 KB Output is correct
59 Correct 3 ms 384 KB Output is correct
60 Correct 2 ms 384 KB Output is correct
61 Correct 2 ms 384 KB Output is correct
62 Correct 3 ms 384 KB Output is correct
63 Correct 2 ms 384 KB Output is correct
64 Correct 3 ms 384 KB Output is correct
65 Correct 195 ms 23684 KB Output is correct
66 Correct 179 ms 23968 KB Output is correct
67 Correct 177 ms 23832 KB Output is correct
68 Correct 198 ms 23832 KB Output is correct
69 Correct 179 ms 23836 KB Output is correct
70 Correct 202 ms 24040 KB Output is correct
71 Correct 162 ms 23892 KB Output is correct
72 Correct 152 ms 23748 KB Output is correct
73 Correct 164 ms 23736 KB Output is correct
74 Correct 181 ms 23876 KB Output is correct
75 Correct 169 ms 23840 KB Output is correct
76 Correct 206 ms 23820 KB Output is correct
77 Correct 188 ms 24028 KB Output is correct
78 Correct 159 ms 23944 KB Output is correct
79 Correct 225 ms 23892 KB Output is correct
80 Correct 194 ms 23940 KB Output is correct
81 Correct 173 ms 23860 KB Output is correct
82 Correct 206 ms 23936 KB Output is correct
83 Correct 200 ms 23680 KB Output is correct
84 Correct 176 ms 23840 KB Output is correct
85 Correct 164 ms 23836 KB Output is correct
86 Correct 163 ms 23900 KB Output is correct
87 Correct 170 ms 23920 KB Output is correct
88 Correct 164 ms 23840 KB Output is correct
89 Correct 179 ms 23768 KB Output is correct
90 Correct 183 ms 23836 KB Output is correct
91 Correct 173 ms 23948 KB Output is correct
92 Correct 164 ms 23840 KB Output is correct
93 Correct 162 ms 23888 KB Output is correct
94 Correct 167 ms 23812 KB Output is correct
95 Correct 193 ms 23856 KB Output is correct
96 Correct 196 ms 23868 KB Output is correct
97 Correct 193 ms 23840 KB Output is correct
98 Correct 207 ms 23840 KB Output is correct
99 Correct 197 ms 23976 KB Output is correct
100 Correct 220 ms 23856 KB Output is correct
101 Correct 179 ms 23840 KB Output is correct
102 Correct 185 ms 23836 KB Output is correct