oj.uz

Submission #634414

# Submission time Handle Problem Language Result Execution time Memory
634414 2022-08-24T11:08:41 Z ParsaEs Lamps (JOI19_lamps) C++17
100 / 100
 47 ms 15948 KB 
//InTheNameOfGOD
//PRS;)
#pragma GCC optimize("unroll-loops", "O2", "Ofast", "O3")
#pragma GCC target("avx2", "sse", "sse2")
#include <cstdio>
constexpr int MAX_N = 1000000;

int N;
char A[MAX_N + 1], B[MAX_N + 1];

/*
  0: OFF
  1: ON
  2: KEPT
*/
char apply(char a, int y) {
  return (y == 0) ? '0' : (y == 1) ? '1' : a;
}

int dp[MAX_N + 1][3];

int main() {
  scanf("%d%s%s", &N, A, B);
  for (int i = 0; i <= N; ++i) {
    for (int x = 0; x < 3; ++x) {
      dp[i][x] = N + 1;
    }
  }
  dp[0][2] = 0;
  for (int i = 0; i < N; ++i) {
    for (int x = 0; x < 3; ++x) {
      for (int xx = 0; xx < 3; ++xx) {
        int cost = dp[i][x];
        if (x != xx && xx != 2) {
          ++cost;
        }
        if ((i == 0 || apply(A[i - 1], x) == B[i - 1]) &&
            apply(A[i], xx) != B[i]) {
          ++cost;
        }
        if (dp[i + 1][xx] > cost) {
          dp[i + 1][xx] = cost;
        }
      }
    }
  }
  int ans = N + 1;
  for (int x = 0; x < 3; ++x) {
    if (ans > dp[N][x]) {
      ans = dp[N][x];
    }
  }
  printf("%d\n", ans);
  return 0;
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:23:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |   scanf("%d%s%s", &N, A, B);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 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 0 ms 212 KB Output is correct
9 Correct 0 ms 292 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 1 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 292 KB Output is correct
22 Correct 0 ms 340 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 1 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 288 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 296 KB Output is correct
33 Correct 1 ms 216 KB Output is correct
34 Correct 0 ms 212 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 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 0 ms 212 KB Output is correct
9 Correct 0 ms 292 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 1 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 292 KB Output is correct
22 Correct 0 ms 340 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 1 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 288 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 296 KB Output is correct
33 Correct 1 ms 216 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 292 KB Output is correct
36 Correct 1 ms 300 KB Output is correct
37 Correct 0 ms 300 KB Output is correct
38 Correct 0 ms 220 KB Output is correct
39 Correct 0 ms 352 KB Output is correct
40 Correct 1 ms 308 KB Output is correct
41 Correct 0 ms 224 KB Output is correct
42 Correct 1 ms 224 KB Output is correct
43 Correct 1 ms 224 KB Output is correct
44 Correct 0 ms 224 KB Output is correct
45 Correct 0 ms 224 KB Output is correct
46 Correct 1 ms 224 KB Output is correct
47 Correct 0 ms 308 KB Output is correct
48 Correct 0 ms 224 KB Output is correct
49 Correct 0 ms 224 KB Output is correct
50 Correct 1 ms 224 KB Output is correct
51 Correct 1 ms 224 KB Output is correct
52 Correct 0 ms 224 KB Output is correct
53 Correct 0 ms 224 KB Output is correct
54 Correct 0 ms 224 KB Output is correct
55 Correct 0 ms 224 KB Output is correct
56 Correct 0 ms 224 KB Output is correct
57 Correct 1 ms 212 KB Output is correct
58 Correct 1 ms 288 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 292 KB Output is correct
4 Correct 0 ms 292 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 36 ms 15880 KB Output is correct
8 Correct 36 ms 15924 KB Output is correct
9 Correct 32 ms 15820 KB Output is correct
10 Correct 37 ms 15948 KB Output is correct
11 Correct 32 ms 15908 KB Output is correct
12 Correct 31 ms 15888 KB Output is correct
13 Correct 31 ms 15852 KB Output is correct
14 Correct 32 ms 15916 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 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 0 ms 212 KB Output is correct
9 Correct 0 ms 292 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 1 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 292 KB Output is correct
22 Correct 0 ms 340 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 1 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 288 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 296 KB Output is correct
33 Correct 1 ms 216 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 292 KB Output is correct
36 Correct 1 ms 300 KB Output is correct
37 Correct 0 ms 300 KB Output is correct
38 Correct 0 ms 220 KB Output is correct
39 Correct 0 ms 352 KB Output is correct
40 Correct 1 ms 308 KB Output is correct
41 Correct 0 ms 224 KB Output is correct
42 Correct 1 ms 224 KB Output is correct
43 Correct 1 ms 224 KB Output is correct
44 Correct 0 ms 224 KB Output is correct
45 Correct 0 ms 224 KB Output is correct
46 Correct 1 ms 224 KB Output is correct
47 Correct 0 ms 308 KB Output is correct
48 Correct 0 ms 224 KB Output is correct
49 Correct 0 ms 224 KB Output is correct
50 Correct 1 ms 224 KB Output is correct
51 Correct 1 ms 224 KB Output is correct
52 Correct 0 ms 224 KB Output is correct
53 Correct 0 ms 224 KB Output is correct
54 Correct 0 ms 224 KB Output is correct
55 Correct 0 ms 224 KB Output is correct
56 Correct 0 ms 224 KB Output is correct
57 Correct 1 ms 212 KB Output is correct
58 Correct 1 ms 288 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 1 ms 292 KB Output is correct
62 Correct 0 ms 292 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 36 ms 15880 KB Output is correct
66 Correct 36 ms 15924 KB Output is correct
67 Correct 32 ms 15820 KB Output is correct
68 Correct 37 ms 15948 KB Output is correct
69 Correct 32 ms 15908 KB Output is correct
70 Correct 31 ms 15888 KB Output is correct
71 Correct 31 ms 15852 KB Output is correct
72 Correct 32 ms 15916 KB Output is correct
73 Correct 33 ms 15872 KB Output is correct
74 Correct 34 ms 15872 KB Output is correct
75 Correct 32 ms 15820 KB Output is correct
76 Correct 29 ms 15920 KB Output is correct
77 Correct 37 ms 15872 KB Output is correct
78 Correct 31 ms 15876 KB Output is correct
79 Correct 33 ms 15912 KB Output is correct
80 Correct 30 ms 15916 KB Output is correct
81 Correct 32 ms 15872 KB Output is correct
82 Correct 33 ms 15908 KB Output is correct
83 Correct 41 ms 15868 KB Output is correct
84 Correct 35 ms 15916 KB Output is correct
85 Correct 36 ms 15920 KB Output is correct
86 Correct 37 ms 15872 KB Output is correct
87 Correct 36 ms 15916 KB Output is correct
88 Correct 39 ms 15920 KB Output is correct
89 Correct 36 ms 15872 KB Output is correct
90 Correct 37 ms 15916 KB Output is correct
91 Correct 37 ms 15924 KB Output is correct
92 Correct 38 ms 15928 KB Output is correct
93 Correct 40 ms 15920 KB Output is correct
94 Correct 41 ms 15924 KB Output is correct
95 Correct 40 ms 15948 KB Output is correct
96 Correct 40 ms 15860 KB Output is correct
97 Correct 41 ms 15920 KB Output is correct
98 Correct 43 ms 15916 KB Output is correct
99 Correct 41 ms 15828 KB Output is correct
100 Correct 43 ms 15916 KB Output is correct
101 Correct 40 ms 15820 KB Output is correct
102 Correct 47 ms 15856 KB Output is correct