oj.uz

Submission #367723

# Submission time Handle Problem Language Result Execution time Memory
367723 2021-02-18T06:16:35 Z sinamhdv Lamps (JOI19_lamps) C++11
100 / 100
 65 ms 35920 KB 
// oj.uz JOI19_lamps
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int mod = 1000 * 1000 * 1000 + 7;
const int INF = 1000 * 1000 * 1000;
const ll LINF = (ll)INF * INF;

#ifdef DEBUG
#define dbg(x) cout << #x << " = " << (x) << endl << flush;
#define dbgr(s, f) { cout << #s << ": "; for (auto _ = (s); _ != (f); _++) cout << *_ << ' '; cout << endl << flush; }
#else
#define dbg(x) ;
#define dbgr(s, f) ;
#endif
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define fast_io ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define msub(a, b) ((mod + ((ll)(a) - (b)) % mod) % mod)
#define mdiv(a, b) ((ll)(a) * poww((b), mod - 2) % mod)
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define mp make_pair
#define fr first
#define sc second
#define endl '\n'

#define MAXN 1000100

int n;
int a[MAXN], b[MAXN];
int dp[MAXN][2][3];

int32_t main(void)
{
	fast_io;
	string sa, sb;
	cin >> n >> sa >> sb;
	
	FOR(i, 0, MAXN)
		fill(dp[i][0], dp[i][0] + 3, INF), fill(dp[i][1], dp[i][1] + 3, INF);
	FOR(i, 0, n)
	{
		a[i] = sa[i] - '0';
		b[i] = sb[i] - '0';
	}

	// dp base
	dp[0][(a[0] != b[0])][0] = (a[0] != b[0]);
	dp[0][(b[0] == 1)][1] = (int)(b[0] == 1) + 1;
	dp[0][(b[0] == 0)][2] = (int)(b[0] == 0) + 1;

	FOR(i, 1, n)
	{
		if (a[i] == b[i])
			dp[i][0][0] = min({dp[i - 1][0][0], dp[i - 1][0][1], dp[i - 1][0][2], dp[i - 1][1][0], dp[i - 1][1][1], dp[i - 1][1][2]});
		else
			dp[i][1][0] = min({dp[i - 1][1][0], dp[i - 1][1][1], dp[i - 1][1][2], dp[i - 1][0][0] + 1, dp[i - 1][0][1] + 1, dp[i - 1][0][2] + 1});
		
		if (b[i] == 0)
		{
			dp[i][0][1] = min({dp[i - 1][0][1], dp[i - 1][1][1], dp[i - 1][0][0] + 1, dp[i - 1][1][0] + 1});
			dp[i][1][2] = min({dp[i - 1][0][0] + 2, dp[i - 1][0][2] + 1, dp[i - 1][1][0] + 1, dp[i - 1][1][2]});
		}
		else
		{
			dp[i][1][1] = min({dp[i - 1][0][0] + 2, dp[i - 1][0][1] + 1, dp[i - 1][1][0] + 1, dp[i - 1][1][1]});
			dp[i][0][2] = min({dp[i - 1][0][0] + 1, dp[i - 1][1][0] + 1, dp[i - 1][0][2], dp[i - 1][1][2]});
		}
	}

	int ans = INF;
	FOR(i, 0, 2)
		FOR(j, 0, 3)
			ans = min(ans, dp[n - 1][i][j]);

	cout << ans << endl;
	return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23788 KB Output is correct
2 Correct 16 ms 23788 KB Output is correct
3 Correct 15 ms 23788 KB Output is correct
4 Correct 16 ms 23916 KB Output is correct
5 Correct 15 ms 23788 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 15 ms 23788 KB Output is correct
8 Correct 15 ms 23788 KB Output is correct
9 Correct 15 ms 23788 KB Output is correct
10 Correct 16 ms 23916 KB Output is correct
11 Correct 15 ms 23788 KB Output is correct
12 Correct 16 ms 23788 KB Output is correct
13 Correct 16 ms 23788 KB Output is correct
14 Correct 16 ms 23936 KB Output is correct
15 Correct 18 ms 23808 KB Output is correct
16 Correct 16 ms 23788 KB Output is correct
17 Correct 15 ms 23788 KB Output is correct
18 Correct 15 ms 23788 KB Output is correct
19 Correct 15 ms 23788 KB Output is correct
20 Correct 15 ms 23788 KB Output is correct
21 Correct 15 ms 23788 KB Output is correct
22 Correct 15 ms 23788 KB Output is correct
23 Correct 16 ms 23788 KB Output is correct
24 Correct 16 ms 23788 KB Output is correct
25 Correct 16 ms 23808 KB Output is correct
26 Correct 15 ms 23788 KB Output is correct
27 Correct 15 ms 23788 KB Output is correct
28 Correct 15 ms 23788 KB Output is correct
29 Correct 15 ms 23788 KB Output is correct
30 Correct 16 ms 23788 KB Output is correct
31 Correct 15 ms 23788 KB Output is correct
32 Correct 15 ms 23788 KB Output is correct
33 Correct 15 ms 23788 KB Output is correct
34 Correct 15 ms 23808 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23788 KB Output is correct
2 Correct 16 ms 23788 KB Output is correct
3 Correct 15 ms 23788 KB Output is correct
4 Correct 16 ms 23916 KB Output is correct
5 Correct 15 ms 23788 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 15 ms 23788 KB Output is correct
8 Correct 15 ms 23788 KB Output is correct
9 Correct 15 ms 23788 KB Output is correct
10 Correct 16 ms 23916 KB Output is correct
11 Correct 15 ms 23788 KB Output is correct
12 Correct 16 ms 23788 KB Output is correct
13 Correct 16 ms 23788 KB Output is correct
14 Correct 16 ms 23936 KB Output is correct
15 Correct 18 ms 23808 KB Output is correct
16 Correct 16 ms 23788 KB Output is correct
17 Correct 15 ms 23788 KB Output is correct
18 Correct 15 ms 23788 KB Output is correct
19 Correct 15 ms 23788 KB Output is correct
20 Correct 15 ms 23788 KB Output is correct
21 Correct 15 ms 23788 KB Output is correct
22 Correct 15 ms 23788 KB Output is correct
23 Correct 16 ms 23788 KB Output is correct
24 Correct 16 ms 23788 KB Output is correct
25 Correct 16 ms 23808 KB Output is correct
26 Correct 15 ms 23788 KB Output is correct
27 Correct 15 ms 23788 KB Output is correct
28 Correct 15 ms 23788 KB Output is correct
29 Correct 15 ms 23788 KB Output is correct
30 Correct 16 ms 23788 KB Output is correct
31 Correct 15 ms 23788 KB Output is correct
32 Correct 15 ms 23788 KB Output is correct
33 Correct 15 ms 23788 KB Output is correct
34 Correct 15 ms 23808 KB Output is correct
35 Correct 15 ms 23916 KB Output is correct
36 Correct 15 ms 23916 KB Output is correct
37 Correct 16 ms 23916 KB Output is correct
38 Correct 15 ms 23916 KB Output is correct
39 Correct 15 ms 23916 KB Output is correct
40 Correct 18 ms 23916 KB Output is correct
41 Correct 15 ms 23916 KB Output is correct
42 Correct 17 ms 23936 KB Output is correct
43 Correct 16 ms 23916 KB Output is correct
44 Correct 15 ms 23916 KB Output is correct
45 Correct 16 ms 24044 KB Output is correct
46 Correct 16 ms 23916 KB Output is correct
47 Correct 15 ms 23916 KB Output is correct
48 Correct 15 ms 23916 KB Output is correct
49 Correct 16 ms 23916 KB Output is correct
50 Correct 15 ms 23916 KB Output is correct
51 Correct 17 ms 23916 KB Output is correct
52 Correct 17 ms 23916 KB Output is correct
53 Correct 16 ms 23916 KB Output is correct
54 Correct 15 ms 23916 KB Output is correct
55 Correct 16 ms 23916 KB Output is correct
56 Correct 16 ms 23916 KB Output is correct
57 Correct 15 ms 23916 KB Output is correct
58 Correct 15 ms 23916 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23788 KB Output is correct
2 Correct 16 ms 23916 KB Output is correct
3 Correct 16 ms 23788 KB Output is correct
4 Correct 18 ms 23788 KB Output is correct
5 Correct 16 ms 23788 KB Output is correct
6 Correct 17 ms 23788 KB Output is correct
7 Correct 44 ms 35772 KB Output is correct
8 Correct 43 ms 35772 KB Output is correct
9 Correct 43 ms 35772 KB Output is correct
10 Correct 49 ms 35772 KB Output is correct
11 Correct 56 ms 35772 KB Output is correct
12 Correct 46 ms 35772 KB Output is correct
13 Correct 43 ms 35772 KB Output is correct
14 Correct 44 ms 35772 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23788 KB Output is correct
2 Correct 16 ms 23788 KB Output is correct
3 Correct 15 ms 23788 KB Output is correct
4 Correct 16 ms 23916 KB Output is correct
5 Correct 15 ms 23788 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 15 ms 23788 KB Output is correct
8 Correct 15 ms 23788 KB Output is correct
9 Correct 15 ms 23788 KB Output is correct
10 Correct 16 ms 23916 KB Output is correct
11 Correct 15 ms 23788 KB Output is correct
12 Correct 16 ms 23788 KB Output is correct
13 Correct 16 ms 23788 KB Output is correct
14 Correct 16 ms 23936 KB Output is correct
15 Correct 18 ms 23808 KB Output is correct
16 Correct 16 ms 23788 KB Output is correct
17 Correct 15 ms 23788 KB Output is correct
18 Correct 15 ms 23788 KB Output is correct
19 Correct 15 ms 23788 KB Output is correct
20 Correct 15 ms 23788 KB Output is correct
21 Correct 15 ms 23788 KB Output is correct
22 Correct 15 ms 23788 KB Output is correct
23 Correct 16 ms 23788 KB Output is correct
24 Correct 16 ms 23788 KB Output is correct
25 Correct 16 ms 23808 KB Output is correct
26 Correct 15 ms 23788 KB Output is correct
27 Correct 15 ms 23788 KB Output is correct
28 Correct 15 ms 23788 KB Output is correct
29 Correct 15 ms 23788 KB Output is correct
30 Correct 16 ms 23788 KB Output is correct
31 Correct 15 ms 23788 KB Output is correct
32 Correct 15 ms 23788 KB Output is correct
33 Correct 15 ms 23788 KB Output is correct
34 Correct 15 ms 23808 KB Output is correct
35 Correct 15 ms 23916 KB Output is correct
36 Correct 15 ms 23916 KB Output is correct
37 Correct 16 ms 23916 KB Output is correct
38 Correct 15 ms 23916 KB Output is correct
39 Correct 15 ms 23916 KB Output is correct
40 Correct 18 ms 23916 KB Output is correct
41 Correct 15 ms 23916 KB Output is correct
42 Correct 17 ms 23936 KB Output is correct
43 Correct 16 ms 23916 KB Output is correct
44 Correct 15 ms 23916 KB Output is correct
45 Correct 16 ms 24044 KB Output is correct
46 Correct 16 ms 23916 KB Output is correct
47 Correct 15 ms 23916 KB Output is correct
48 Correct 15 ms 23916 KB Output is correct
49 Correct 16 ms 23916 KB Output is correct
50 Correct 15 ms 23916 KB Output is correct
51 Correct 17 ms 23916 KB Output is correct
52 Correct 17 ms 23916 KB Output is correct
53 Correct 16 ms 23916 KB Output is correct
54 Correct 15 ms 23916 KB Output is correct
55 Correct 16 ms 23916 KB Output is correct
56 Correct 16 ms 23916 KB Output is correct
57 Correct 15 ms 23916 KB Output is correct
58 Correct 15 ms 23916 KB Output is correct
59 Correct 15 ms 23788 KB Output is correct
60 Correct 16 ms 23916 KB Output is correct
61 Correct 16 ms 23788 KB Output is correct
62 Correct 18 ms 23788 KB Output is correct
63 Correct 16 ms 23788 KB Output is correct
64 Correct 17 ms 23788 KB Output is correct
65 Correct 44 ms 35772 KB Output is correct
66 Correct 43 ms 35772 KB Output is correct
67 Correct 43 ms 35772 KB Output is correct
68 Correct 49 ms 35772 KB Output is correct
69 Correct 56 ms 35772 KB Output is correct
70 Correct 46 ms 35772 KB Output is correct
71 Correct 43 ms 35772 KB Output is correct
72 Correct 44 ms 35772 KB Output is correct
73 Correct 43 ms 35772 KB Output is correct
74 Correct 46 ms 35776 KB Output is correct
75 Correct 41 ms 35772 KB Output is correct
76 Correct 44 ms 35772 KB Output is correct
77 Correct 44 ms 35772 KB Output is correct
78 Correct 43 ms 35772 KB Output is correct
79 Correct 46 ms 35772 KB Output is correct
80 Correct 41 ms 35772 KB Output is correct
81 Correct 43 ms 35792 KB Output is correct
82 Correct 45 ms 35920 KB Output is correct
83 Correct 49 ms 35772 KB Output is correct
84 Correct 49 ms 35772 KB Output is correct
85 Correct 49 ms 35900 KB Output is correct
86 Correct 49 ms 35772 KB Output is correct
87 Correct 49 ms 35772 KB Output is correct
88 Correct 49 ms 35780 KB Output is correct
89 Correct 48 ms 35772 KB Output is correct
90 Correct 48 ms 35772 KB Output is correct
91 Correct 52 ms 35772 KB Output is correct
92 Correct 54 ms 35772 KB Output is correct
93 Correct 55 ms 35904 KB Output is correct
94 Correct 55 ms 35772 KB Output is correct
95 Correct 65 ms 35920 KB Output is correct
96 Correct 55 ms 35900 KB Output is correct
97 Correct 54 ms 35772 KB Output is correct
98 Correct 55 ms 35772 KB Output is correct
99 Correct 54 ms 35772 KB Output is correct
100 Correct 63 ms 35772 KB Output is correct
101 Correct 58 ms 35776 KB Output is correct
102 Correct 56 ms 35772 KB Output is correct