oj.uz

Submission #959498

# Submission time Handle Problem Language Result Execution time Memory
959498 2024-04-08T10:29:45 Z Yang8on Lamps (JOI19_lamps) C++14
100 / 100
 53 ms 16492 KB 
#include <bits/stdc++.h>
#define Y8o "lamps"
#define maxn 1000005
#define ll long long
#define pii pair<int, int>
#define gb(i, j) ((i >> j) & 1)

using namespace std;

/// okay?
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll GetRandom(ll l, ll r)
{
    return uniform_int_distribution<ll> (l, r) (rng);
}
void iof()   /// ------------------inp_out file!-----------------///
{
    if(fopen(Y8o".inp", "r"))
    {
        freopen(Y8o".inp", "r", stdin);
        freopen(Y8o".out", "w", stdout);
    }
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
}
void ctime()   /// ------------------check time!-----------------///
{
    cerr << "\n" << "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
}
/// okay!

int n;
string a, b;
int dp[maxn][3];

char make(int pos, int operation)
{
    if(operation < 2) return operation + '0';
    return a[pos];
}

void solve()
{
    cin >> n >> a >> b;
    a = ' ' + a, b = ' ' + b;

    memset(dp, 0x3f, sizeof dp);
    dp[0][2] = 0;

    for(int i = 1; i <= n; i ++)
    {
        for(int j = 0; j <= 2; j ++)
        {
            for(int t = 0; t <= 2; t ++) /// (i - 1, j) --> (i, t)
            {
                int cost = dp[i - 1][j];
                if(j != t && t != 2)
                    cost ++;
                if((i == 1 || make(i - 1, j) == b[i - 1]) && make(i, t) != b[i])
                    cost ++;

                dp[i][t] = min(dp[i][t], cost);
            }
        }
    }

    cout << min({ dp[n][0], dp[n][1], dp[n][2] });
}

int main()
{
    iof();

    int nTest = 1;
//    cin >> nTest;

    while(nTest --)
    {
        solve();
    }

    ctime();
    return 0;
}

Compilation message

lamp.cpp: In function 'void iof()':
lamp.cpp:20:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         freopen(Y8o".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
lamp.cpp:21:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen(Y8o".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12124 KB Output is correct
2 Correct 4 ms 12120 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 4 ms 12124 KB Output is correct
5 Correct 4 ms 12120 KB Output is correct
6 Correct 4 ms 12124 KB Output is correct
7 Correct 4 ms 12124 KB Output is correct
8 Correct 6 ms 12124 KB Output is correct
9 Correct 5 ms 12124 KB Output is correct
10 Correct 4 ms 12000 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 5 ms 12124 KB Output is correct
13 Correct 4 ms 12124 KB Output is correct
14 Correct 4 ms 12124 KB Output is correct
15 Correct 4 ms 12124 KB Output is correct
16 Correct 4 ms 12004 KB Output is correct
17 Correct 4 ms 12036 KB Output is correct
18 Correct 4 ms 12124 KB Output is correct
19 Correct 4 ms 12124 KB Output is correct
20 Correct 4 ms 12124 KB Output is correct
21 Correct 4 ms 12124 KB Output is correct
22 Correct 4 ms 12124 KB Output is correct
23 Correct 5 ms 12168 KB Output is correct
24 Correct 4 ms 12124 KB Output is correct
25 Correct 5 ms 12120 KB Output is correct
26 Correct 4 ms 12124 KB Output is correct
27 Correct 4 ms 12124 KB Output is correct
28 Correct 4 ms 12124 KB Output is correct
29 Correct 4 ms 12124 KB Output is correct
30 Correct 4 ms 12124 KB Output is correct
31 Correct 4 ms 12124 KB Output is correct
32 Correct 4 ms 12124 KB Output is correct
33 Correct 4 ms 12124 KB Output is correct
34 Correct 4 ms 12124 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12124 KB Output is correct
2 Correct 4 ms 12120 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 4 ms 12124 KB Output is correct
5 Correct 4 ms 12120 KB Output is correct
6 Correct 4 ms 12124 KB Output is correct
7 Correct 4 ms 12124 KB Output is correct
8 Correct 6 ms 12124 KB Output is correct
9 Correct 5 ms 12124 KB Output is correct
10 Correct 4 ms 12000 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 5 ms 12124 KB Output is correct
13 Correct 4 ms 12124 KB Output is correct
14 Correct 4 ms 12124 KB Output is correct
15 Correct 4 ms 12124 KB Output is correct
16 Correct 4 ms 12004 KB Output is correct
17 Correct 4 ms 12036 KB Output is correct
18 Correct 4 ms 12124 KB Output is correct
19 Correct 4 ms 12124 KB Output is correct
20 Correct 4 ms 12124 KB Output is correct
21 Correct 4 ms 12124 KB Output is correct
22 Correct 4 ms 12124 KB Output is correct
23 Correct 5 ms 12168 KB Output is correct
24 Correct 4 ms 12124 KB Output is correct
25 Correct 5 ms 12120 KB Output is correct
26 Correct 4 ms 12124 KB Output is correct
27 Correct 4 ms 12124 KB Output is correct
28 Correct 4 ms 12124 KB Output is correct
29 Correct 4 ms 12124 KB Output is correct
30 Correct 4 ms 12124 KB Output is correct
31 Correct 4 ms 12124 KB Output is correct
32 Correct 4 ms 12124 KB Output is correct
33 Correct 4 ms 12124 KB Output is correct
34 Correct 4 ms 12124 KB Output is correct
35 Correct 4 ms 12124 KB Output is correct
36 Correct 4 ms 12124 KB Output is correct
37 Correct 5 ms 12120 KB Output is correct
38 Correct 4 ms 12124 KB Output is correct
39 Correct 4 ms 11984 KB Output is correct
40 Correct 4 ms 12124 KB Output is correct
41 Correct 4 ms 12124 KB Output is correct
42 Correct 4 ms 12124 KB Output is correct
43 Correct 4 ms 12036 KB Output is correct
44 Correct 4 ms 12124 KB Output is correct
45 Correct 4 ms 12124 KB Output is correct
46 Correct 4 ms 12124 KB Output is correct
47 Correct 4 ms 12124 KB Output is correct
48 Correct 4 ms 12124 KB Output is correct
49 Correct 4 ms 11972 KB Output is correct
50 Correct 4 ms 12372 KB Output is correct
51 Correct 4 ms 12124 KB Output is correct
52 Correct 4 ms 12376 KB Output is correct
53 Correct 4 ms 12124 KB Output is correct
54 Correct 4 ms 12124 KB Output is correct
55 Correct 5 ms 12124 KB Output is correct
56 Correct 4 ms 12124 KB Output is correct
57 Correct 4 ms 12124 KB Output is correct
58 Correct 4 ms 12124 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12120 KB Output is correct
2 Correct 5 ms 12120 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 4 ms 12124 KB Output is correct
5 Correct 4 ms 12096 KB Output is correct
6 Correct 4 ms 12124 KB Output is correct
7 Correct 39 ms 16240 KB Output is correct
8 Correct 37 ms 16132 KB Output is correct
9 Correct 39 ms 16244 KB Output is correct
10 Correct 38 ms 16240 KB Output is correct
11 Correct 38 ms 16132 KB Output is correct
12 Correct 44 ms 16240 KB Output is correct
13 Correct 37 ms 16124 KB Output is correct
14 Correct 38 ms 16064 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12124 KB Output is correct
2 Correct 4 ms 12120 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 4 ms 12124 KB Output is correct
5 Correct 4 ms 12120 KB Output is correct
6 Correct 4 ms 12124 KB Output is correct
7 Correct 4 ms 12124 KB Output is correct
8 Correct 6 ms 12124 KB Output is correct
9 Correct 5 ms 12124 KB Output is correct
10 Correct 4 ms 12000 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 5 ms 12124 KB Output is correct
13 Correct 4 ms 12124 KB Output is correct
14 Correct 4 ms 12124 KB Output is correct
15 Correct 4 ms 12124 KB Output is correct
16 Correct 4 ms 12004 KB Output is correct
17 Correct 4 ms 12036 KB Output is correct
18 Correct 4 ms 12124 KB Output is correct
19 Correct 4 ms 12124 KB Output is correct
20 Correct 4 ms 12124 KB Output is correct
21 Correct 4 ms 12124 KB Output is correct
22 Correct 4 ms 12124 KB Output is correct
23 Correct 5 ms 12168 KB Output is correct
24 Correct 4 ms 12124 KB Output is correct
25 Correct 5 ms 12120 KB Output is correct
26 Correct 4 ms 12124 KB Output is correct
27 Correct 4 ms 12124 KB Output is correct
28 Correct 4 ms 12124 KB Output is correct
29 Correct 4 ms 12124 KB Output is correct
30 Correct 4 ms 12124 KB Output is correct
31 Correct 4 ms 12124 KB Output is correct
32 Correct 4 ms 12124 KB Output is correct
33 Correct 4 ms 12124 KB Output is correct
34 Correct 4 ms 12124 KB Output is correct
35 Correct 4 ms 12124 KB Output is correct
36 Correct 4 ms 12124 KB Output is correct
37 Correct 5 ms 12120 KB Output is correct
38 Correct 4 ms 12124 KB Output is correct
39 Correct 4 ms 11984 KB Output is correct
40 Correct 4 ms 12124 KB Output is correct
41 Correct 4 ms 12124 KB Output is correct
42 Correct 4 ms 12124 KB Output is correct
43 Correct 4 ms 12036 KB Output is correct
44 Correct 4 ms 12124 KB Output is correct
45 Correct 4 ms 12124 KB Output is correct
46 Correct 4 ms 12124 KB Output is correct
47 Correct 4 ms 12124 KB Output is correct
48 Correct 4 ms 12124 KB Output is correct
49 Correct 4 ms 11972 KB Output is correct
50 Correct 4 ms 12372 KB Output is correct
51 Correct 4 ms 12124 KB Output is correct
52 Correct 4 ms 12376 KB Output is correct
53 Correct 4 ms 12124 KB Output is correct
54 Correct 4 ms 12124 KB Output is correct
55 Correct 5 ms 12124 KB Output is correct
56 Correct 4 ms 12124 KB Output is correct
57 Correct 4 ms 12124 KB Output is correct
58 Correct 4 ms 12124 KB Output is correct
59 Correct 4 ms 12120 KB Output is correct
60 Correct 5 ms 12120 KB Output is correct
61 Correct 4 ms 12124 KB Output is correct
62 Correct 4 ms 12124 KB Output is correct
63 Correct 4 ms 12096 KB Output is correct
64 Correct 4 ms 12124 KB Output is correct
65 Correct 39 ms 16240 KB Output is correct
66 Correct 37 ms 16132 KB Output is correct
67 Correct 39 ms 16244 KB Output is correct
68 Correct 38 ms 16240 KB Output is correct
69 Correct 38 ms 16132 KB Output is correct
70 Correct 44 ms 16240 KB Output is correct
71 Correct 37 ms 16124 KB Output is correct
72 Correct 38 ms 16064 KB Output is correct
73 Correct 37 ms 16084 KB Output is correct
74 Correct 39 ms 16128 KB Output is correct
75 Correct 36 ms 16136 KB Output is correct
76 Correct 34 ms 16124 KB Output is correct
77 Correct 41 ms 16408 KB Output is correct
78 Correct 40 ms 16136 KB Output is correct
79 Correct 36 ms 16128 KB Output is correct
80 Correct 45 ms 16380 KB Output is correct
81 Correct 38 ms 16132 KB Output is correct
82 Correct 42 ms 16132 KB Output is correct
83 Correct 40 ms 16248 KB Output is correct
84 Correct 50 ms 16136 KB Output is correct
85 Correct 43 ms 16244 KB Output is correct
86 Correct 41 ms 16136 KB Output is correct
87 Correct 41 ms 16128 KB Output is correct
88 Correct 48 ms 16124 KB Output is correct
89 Correct 44 ms 16136 KB Output is correct
90 Correct 40 ms 16244 KB Output is correct
91 Correct 48 ms 16492 KB Output is correct
92 Correct 47 ms 16180 KB Output is correct
93 Correct 53 ms 16208 KB Output is correct
94 Correct 47 ms 16136 KB Output is correct
95 Correct 47 ms 16132 KB Output is correct
96 Correct 52 ms 16240 KB Output is correct
97 Correct 48 ms 16136 KB Output is correct
98 Correct 46 ms 16136 KB Output is correct
99 Correct 45 ms 16124 KB Output is correct
100 Correct 47 ms 16136 KB Output is correct
101 Correct 49 ms 16244 KB Output is correct
102 Correct 46 ms 16132 KB Output is correct