oj.uz

Submission #376512

# Submission time Handle Problem Language Result Execution time Memory
376512 2021-03-11T15:33:29 Z Sparky_09 Lamps (JOI19_lamps) C++17
100 / 100
 53 ms 16108 KB 
#include "bits/stdc++.h"
using namespace std;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define trav(a, x) for(auto& a : x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<ll, ll> pii;
typedef vector<ll> vi;
typedef vector<pii> vpi;

int rd() {
	int result = 0;
	char ch;
	ch = getchar();
	while(ch < '0' || ch > '9') ch = getchar();
	result = ch-'0';
	while (true) {
		ch = getchar();
		if (ch < '0' || ch > '9') break;
		result = result*10 + (ch - '0');
	}
	return result;
}

template<class T> bool ckmin(T& a, const T& b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }

void usaco(string s){
  freopen((s+".in").c_str(), "r", stdin);
  freopen((s+".out").c_str(), "w", stdout);
}

int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(cin.failbit);
#ifdef LOCAL_DEFINE
	freopen("input.txt", "r", stdin);
#endif
  const int N = 1e6 + 5;
  int n, dp[ N ][ 3 ];
  char s[ N ], t[ N ];
  cin >> n >> (s + 1) >> (t + 1);
  memset( dp, 0x3f, sizeof dp );
  dp[ 0 ][ 0 ] = 0;
  for ( int i = 1 ; i <= n ; i++ ) {
    s[ i ] -= '0';
    t[ i ] -= '0';
    for ( int j = 0; j < 3; j++ ) {
      for( int k = 0; k < 3; k++ ) {
        int x = k ? k - 1 : s[ i ] , y = j ? j - 1 : s[ i - 1 ];
        dp[ i ][ k ] = min ( dp[ i ][ k ] , dp[ i - 1 ][ j ] + ( k and k != j ) + ( y == t[ i - 1 ] and x != t[ i ] ));
      }
    }
  }
  cout << min ( dp[ n ][ 0 ], min( dp[ n ][ 1 ], dp[ n ][ 2 ] ));
}

Compilation message

lamp.cpp: In function 'void usaco(std::string)':
lamp.cpp:30:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   30 |   freopen((s+".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lamp.cpp:31:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   31 |   freopen((s+".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12140 KB Output is correct
2 Correct 6 ms 12140 KB Output is correct
3 Correct 6 ms 12140 KB Output is correct
4 Correct 6 ms 12140 KB Output is correct
5 Correct 6 ms 12140 KB Output is correct
6 Correct 7 ms 12140 KB Output is correct
7 Correct 6 ms 12140 KB Output is correct
8 Correct 7 ms 12140 KB Output is correct
9 Correct 6 ms 12140 KB Output is correct
10 Correct 6 ms 12140 KB Output is correct
11 Correct 6 ms 12140 KB Output is correct
12 Correct 6 ms 12140 KB Output is correct
13 Correct 6 ms 12140 KB Output is correct
14 Correct 6 ms 12140 KB Output is correct
15 Correct 6 ms 12140 KB Output is correct
16 Correct 6 ms 12140 KB Output is correct
17 Correct 6 ms 12140 KB Output is correct
18 Correct 7 ms 12140 KB Output is correct
19 Correct 6 ms 12140 KB Output is correct
20 Correct 7 ms 12140 KB Output is correct
21 Correct 7 ms 12140 KB Output is correct
22 Correct 6 ms 12140 KB Output is correct
23 Correct 6 ms 12140 KB Output is correct
24 Correct 6 ms 12140 KB Output is correct
25 Correct 6 ms 12140 KB Output is correct
26 Correct 6 ms 12140 KB Output is correct
27 Correct 6 ms 12140 KB Output is correct
28 Correct 6 ms 12140 KB Output is correct
29 Correct 6 ms 12140 KB Output is correct
30 Correct 6 ms 12140 KB Output is correct
31 Correct 6 ms 12160 KB Output is correct
32 Correct 6 ms 12140 KB Output is correct
33 Correct 6 ms 12140 KB Output is correct
34 Correct 6 ms 12140 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12140 KB Output is correct
2 Correct 6 ms 12140 KB Output is correct
3 Correct 6 ms 12140 KB Output is correct
4 Correct 6 ms 12140 KB Output is correct
5 Correct 6 ms 12140 KB Output is correct
6 Correct 7 ms 12140 KB Output is correct
7 Correct 6 ms 12140 KB Output is correct
8 Correct 7 ms 12140 KB Output is correct
9 Correct 6 ms 12140 KB Output is correct
10 Correct 6 ms 12140 KB Output is correct
11 Correct 6 ms 12140 KB Output is correct
12 Correct 6 ms 12140 KB Output is correct
13 Correct 6 ms 12140 KB Output is correct
14 Correct 6 ms 12140 KB Output is correct
15 Correct 6 ms 12140 KB Output is correct
16 Correct 6 ms 12140 KB Output is correct
17 Correct 6 ms 12140 KB Output is correct
18 Correct 7 ms 12140 KB Output is correct
19 Correct 6 ms 12140 KB Output is correct
20 Correct 7 ms 12140 KB Output is correct
21 Correct 7 ms 12140 KB Output is correct
22 Correct 6 ms 12140 KB Output is correct
23 Correct 6 ms 12140 KB Output is correct
24 Correct 6 ms 12140 KB Output is correct
25 Correct 6 ms 12140 KB Output is correct
26 Correct 6 ms 12140 KB Output is correct
27 Correct 6 ms 12140 KB Output is correct
28 Correct 6 ms 12140 KB Output is correct
29 Correct 6 ms 12140 KB Output is correct
30 Correct 6 ms 12140 KB Output is correct
31 Correct 6 ms 12160 KB Output is correct
32 Correct 6 ms 12140 KB Output is correct
33 Correct 6 ms 12140 KB Output is correct
34 Correct 6 ms 12140 KB Output is correct
35 Correct 6 ms 12140 KB Output is correct
36 Correct 6 ms 12140 KB Output is correct
37 Correct 6 ms 12140 KB Output is correct
38 Correct 7 ms 12140 KB Output is correct
39 Correct 7 ms 12160 KB Output is correct
40 Correct 7 ms 12140 KB Output is correct
41 Correct 7 ms 12140 KB Output is correct
42 Correct 6 ms 12140 KB Output is correct
43 Correct 7 ms 12140 KB Output is correct
44 Correct 7 ms 12140 KB Output is correct
45 Correct 6 ms 12140 KB Output is correct
46 Correct 7 ms 12140 KB Output is correct
47 Correct 7 ms 12140 KB Output is correct
48 Correct 6 ms 12140 KB Output is correct
49 Correct 6 ms 12140 KB Output is correct
50 Correct 6 ms 12140 KB Output is correct
51 Correct 6 ms 12140 KB Output is correct
52 Correct 7 ms 12140 KB Output is correct
53 Correct 6 ms 12140 KB Output is correct
54 Correct 6 ms 12140 KB Output is correct
55 Correct 7 ms 12140 KB Output is correct
56 Correct 7 ms 12140 KB Output is correct
57 Correct 7 ms 12140 KB Output is correct
58 Correct 7 ms 12140 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12140 KB Output is correct
2 Correct 6 ms 12048 KB Output is correct
3 Correct 6 ms 12140 KB Output is correct
4 Correct 6 ms 12140 KB Output is correct
5 Correct 7 ms 12140 KB Output is correct
6 Correct 6 ms 12140 KB Output is correct
7 Correct 40 ms 16108 KB Output is correct
8 Correct 39 ms 15980 KB Output is correct
9 Correct 41 ms 16108 KB Output is correct
10 Correct 39 ms 15980 KB Output is correct
11 Correct 39 ms 15980 KB Output is correct
12 Correct 37 ms 15980 KB Output is correct
13 Correct 38 ms 15980 KB Output is correct
14 Correct 38 ms 15980 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12140 KB Output is correct
2 Correct 6 ms 12140 KB Output is correct
3 Correct 6 ms 12140 KB Output is correct
4 Correct 6 ms 12140 KB Output is correct
5 Correct 6 ms 12140 KB Output is correct
6 Correct 7 ms 12140 KB Output is correct
7 Correct 6 ms 12140 KB Output is correct
8 Correct 7 ms 12140 KB Output is correct
9 Correct 6 ms 12140 KB Output is correct
10 Correct 6 ms 12140 KB Output is correct
11 Correct 6 ms 12140 KB Output is correct
12 Correct 6 ms 12140 KB Output is correct
13 Correct 6 ms 12140 KB Output is correct
14 Correct 6 ms 12140 KB Output is correct
15 Correct 6 ms 12140 KB Output is correct
16 Correct 6 ms 12140 KB Output is correct
17 Correct 6 ms 12140 KB Output is correct
18 Correct 7 ms 12140 KB Output is correct
19 Correct 6 ms 12140 KB Output is correct
20 Correct 7 ms 12140 KB Output is correct
21 Correct 7 ms 12140 KB Output is correct
22 Correct 6 ms 12140 KB Output is correct
23 Correct 6 ms 12140 KB Output is correct
24 Correct 6 ms 12140 KB Output is correct
25 Correct 6 ms 12140 KB Output is correct
26 Correct 6 ms 12140 KB Output is correct
27 Correct 6 ms 12140 KB Output is correct
28 Correct 6 ms 12140 KB Output is correct
29 Correct 6 ms 12140 KB Output is correct
30 Correct 6 ms 12140 KB Output is correct
31 Correct 6 ms 12160 KB Output is correct
32 Correct 6 ms 12140 KB Output is correct
33 Correct 6 ms 12140 KB Output is correct
34 Correct 6 ms 12140 KB Output is correct
35 Correct 6 ms 12140 KB Output is correct
36 Correct 6 ms 12140 KB Output is correct
37 Correct 6 ms 12140 KB Output is correct
38 Correct 7 ms 12140 KB Output is correct
39 Correct 7 ms 12160 KB Output is correct
40 Correct 7 ms 12140 KB Output is correct
41 Correct 7 ms 12140 KB Output is correct
42 Correct 6 ms 12140 KB Output is correct
43 Correct 7 ms 12140 KB Output is correct
44 Correct 7 ms 12140 KB Output is correct
45 Correct 6 ms 12140 KB Output is correct
46 Correct 7 ms 12140 KB Output is correct
47 Correct 7 ms 12140 KB Output is correct
48 Correct 6 ms 12140 KB Output is correct
49 Correct 6 ms 12140 KB Output is correct
50 Correct 6 ms 12140 KB Output is correct
51 Correct 6 ms 12140 KB Output is correct
52 Correct 7 ms 12140 KB Output is correct
53 Correct 6 ms 12140 KB Output is correct
54 Correct 6 ms 12140 KB Output is correct
55 Correct 7 ms 12140 KB Output is correct
56 Correct 7 ms 12140 KB Output is correct
57 Correct 7 ms 12140 KB Output is correct
58 Correct 7 ms 12140 KB Output is correct
59 Correct 6 ms 12140 KB Output is correct
60 Correct 6 ms 12048 KB Output is correct
61 Correct 6 ms 12140 KB Output is correct
62 Correct 6 ms 12140 KB Output is correct
63 Correct 7 ms 12140 KB Output is correct
64 Correct 6 ms 12140 KB Output is correct
65 Correct 40 ms 16108 KB Output is correct
66 Correct 39 ms 15980 KB Output is correct
67 Correct 41 ms 16108 KB Output is correct
68 Correct 39 ms 15980 KB Output is correct
69 Correct 39 ms 15980 KB Output is correct
70 Correct 37 ms 15980 KB Output is correct
71 Correct 38 ms 15980 KB Output is correct
72 Correct 38 ms 15980 KB Output is correct
73 Correct 39 ms 15980 KB Output is correct
74 Correct 39 ms 15980 KB Output is correct
75 Correct 37 ms 15980 KB Output is correct
76 Correct 39 ms 15980 KB Output is correct
77 Correct 38 ms 15980 KB Output is correct
78 Correct 38 ms 15980 KB Output is correct
79 Correct 39 ms 16000 KB Output is correct
80 Correct 36 ms 15980 KB Output is correct
81 Correct 38 ms 16108 KB Output is correct
82 Correct 37 ms 15980 KB Output is correct
83 Correct 44 ms 15980 KB Output is correct
84 Correct 43 ms 15980 KB Output is correct
85 Correct 43 ms 15980 KB Output is correct
86 Correct 43 ms 16108 KB Output is correct
87 Correct 45 ms 16108 KB Output is correct
88 Correct 45 ms 15980 KB Output is correct
89 Correct 43 ms 15980 KB Output is correct
90 Correct 53 ms 15980 KB Output is correct
91 Correct 46 ms 16108 KB Output is correct
92 Correct 48 ms 15980 KB Output is correct
93 Correct 46 ms 16108 KB Output is correct
94 Correct 47 ms 16108 KB Output is correct
95 Correct 50 ms 15980 KB Output is correct
96 Correct 48 ms 15980 KB Output is correct
97 Correct 46 ms 15980 KB Output is correct
98 Correct 50 ms 15980 KB Output is correct
99 Correct 47 ms 16108 KB Output is correct
100 Correct 49 ms 15980 KB Output is correct
101 Correct 49 ms 15980 KB Output is correct
102 Correct 46 ms 15980 KB Output is correct