답안 #959498

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
959498	2024-04-08T10:29:45 Z	Yang8on	Lamps (JOI19_lamps)	C++14	100 / 100	53 ms	16492 KB

lamp

#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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

답안 #959498

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 41.0 / 41.0

Subtask #3 4.0 / 4.0

Subtask #4 49.0 / 49.0

Subtask #1
6.0 / 6.0

Subtask #2
41.0 / 41.0

Subtask #3
4.0 / 4.0

Subtask #4
49.0 / 49.0