답안 #410275

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
410275	2021-05-22T11:52:44 Z	alireza_kaviani	Lamps (JOI19_lamps)	C++11	100 / 100	84 ms	16036 KB

lamp

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;

#define all(x)						(x).begin(),(x).end()
#define X							first
#define Y							second
#define sep							' '
#define endl						'\n'
#define SZ(x)						ll(x.size())

const ll MAXN = 1e6 + 10;
const ll LOG = 22;
const ll INF = 8e18;
const ll MOD = 1e9 + 7; //998244353; //1e9 + 9;

int n , dp[MAXN][3];
string s , t;

int valid(int i , int j){
	if(i < 0)	return 1;
	if(j == 0)	return (s[i] == t[i]);
	if(j == 1)	return (t[i] == '0');
	if(j == 2)	return (t[i] == '1');
}

int main() {
    ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

	cin >> n >> s >> t;
	s = "." + s; t = "." + t;
	dp[0][1] = dp[0][2] = MOD;
	for(int i = 1 ; i <= n ; i++){
		for(int j = 0 ; j < 3 ; j++){
			dp[i][j] = MOD;
			for(int k = 0 ; k < 3 ; k++){
				dp[i][j] = min(dp[i][j] , dp[i - 1][k] + ((j != k) + (j != k && j > 0 && k > 0)) + (valid(i , j) != valid(i - 1 , k)));
				//cout << dp[i - 1][k] + (j != k) + (valid(i , j) != valid(i - 1 , k)) << sep;
			}
			//cout << dp[i][j] << endl;
		}
		//cout << "==========" << endl;
	}
	int ans = MOD;
	for(int i = 0 ; i < 3 ; i++){
		ans = min(ans , dp[n][i] + (i != 0) + 1 - valid(n , i));
	}
	cout << ans / 2 << endl;

    return 0;
}
/*

*/

Compilation message

lamp.cpp: In function 'int valid(int, int)':
lamp.cpp:28:1: warning: control reaches end of non-void function [-Wreturn-type]
   28 | }
      | ^

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	1 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	204 KB	Output is correct
22	Correct	1 ms	328 KB	Output is correct
23	Correct	1 ms	204 KB	Output is correct
24	Correct	1 ms	204 KB	Output is correct
25	Correct	1 ms	204 KB	Output is correct
26	Correct	1 ms	204 KB	Output is correct
27	Correct	1 ms	204 KB	Output is correct
28	Correct	1 ms	204 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	1 ms	204 KB	Output is correct
32	Correct	1 ms	204 KB	Output is correct
33	Correct	1 ms	204 KB	Output is correct
34	Correct	1 ms	204 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	1 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	204 KB	Output is correct
22	Correct	1 ms	328 KB	Output is correct
23	Correct	1 ms	204 KB	Output is correct
24	Correct	1 ms	204 KB	Output is correct
25	Correct	1 ms	204 KB	Output is correct
26	Correct	1 ms	204 KB	Output is correct
27	Correct	1 ms	204 KB	Output is correct
28	Correct	1 ms	204 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	1 ms	204 KB	Output is correct
32	Correct	1 ms	204 KB	Output is correct
33	Correct	1 ms	204 KB	Output is correct
34	Correct	1 ms	204 KB	Output is correct
35	Correct	1 ms	332 KB	Output is correct
36	Correct	1 ms	332 KB	Output is correct
37	Correct	1 ms	332 KB	Output is correct
38	Correct	2 ms	332 KB	Output is correct
39	Correct	1 ms	332 KB	Output is correct
40	Correct	1 ms	332 KB	Output is correct
41	Correct	1 ms	332 KB	Output is correct
42	Correct	1 ms	332 KB	Output is correct
43	Correct	1 ms	332 KB	Output is correct
44	Correct	1 ms	332 KB	Output is correct
45	Correct	1 ms	332 KB	Output is correct
46	Correct	1 ms	332 KB	Output is correct
47	Correct	1 ms	332 KB	Output is correct
48	Correct	1 ms	332 KB	Output is correct
49	Correct	1 ms	332 KB	Output is correct
50	Correct	1 ms	332 KB	Output is correct
51	Correct	1 ms	332 KB	Output is correct
52	Correct	1 ms	324 KB	Output is correct
53	Correct	1 ms	332 KB	Output is correct
54	Correct	2 ms	332 KB	Output is correct
55	Correct	1 ms	324 KB	Output is correct
56	Correct	1 ms	332 KB	Output is correct
57	Correct	1 ms	332 KB	Output is correct
58	Correct	1 ms	324 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	62 ms	14096 KB	Output is correct
8	Correct	64 ms	14044 KB	Output is correct
9	Correct	63 ms	13892 KB	Output is correct
10	Correct	63 ms	13924 KB	Output is correct
11	Correct	63 ms	13912 KB	Output is correct
12	Correct	66 ms	13912 KB	Output is correct
13	Correct	84 ms	14004 KB	Output is correct
14	Correct	62 ms	13920 KB	Output is correct

Subtask #4
49.0 / 49.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	1 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	204 KB	Output is correct
22	Correct	1 ms	328 KB	Output is correct
23	Correct	1 ms	204 KB	Output is correct
24	Correct	1 ms	204 KB	Output is correct
25	Correct	1 ms	204 KB	Output is correct
26	Correct	1 ms	204 KB	Output is correct
27	Correct	1 ms	204 KB	Output is correct
28	Correct	1 ms	204 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	1 ms	204 KB	Output is correct
32	Correct	1 ms	204 KB	Output is correct
33	Correct	1 ms	204 KB	Output is correct
34	Correct	1 ms	204 KB	Output is correct
35	Correct	1 ms	332 KB	Output is correct
36	Correct	1 ms	332 KB	Output is correct
37	Correct	1 ms	332 KB	Output is correct
38	Correct	2 ms	332 KB	Output is correct
39	Correct	1 ms	332 KB	Output is correct
40	Correct	1 ms	332 KB	Output is correct
41	Correct	1 ms	332 KB	Output is correct
42	Correct	1 ms	332 KB	Output is correct
43	Correct	1 ms	332 KB	Output is correct
44	Correct	1 ms	332 KB	Output is correct
45	Correct	1 ms	332 KB	Output is correct
46	Correct	1 ms	332 KB	Output is correct
47	Correct	1 ms	332 KB	Output is correct
48	Correct	1 ms	332 KB	Output is correct
49	Correct	1 ms	332 KB	Output is correct
50	Correct	1 ms	332 KB	Output is correct
51	Correct	1 ms	332 KB	Output is correct
52	Correct	1 ms	324 KB	Output is correct
53	Correct	1 ms	332 KB	Output is correct
54	Correct	2 ms	332 KB	Output is correct
55	Correct	1 ms	324 KB	Output is correct
56	Correct	1 ms	332 KB	Output is correct
57	Correct	1 ms	332 KB	Output is correct
58	Correct	1 ms	324 KB	Output is correct
59	Correct	1 ms	204 KB	Output is correct
60	Correct	1 ms	204 KB	Output is correct
61	Correct	1 ms	204 KB	Output is correct
62	Correct	1 ms	204 KB	Output is correct
63	Correct	1 ms	204 KB	Output is correct
64	Correct	1 ms	204 KB	Output is correct
65	Correct	62 ms	14096 KB	Output is correct
66	Correct	64 ms	14044 KB	Output is correct
67	Correct	63 ms	13892 KB	Output is correct
68	Correct	63 ms	13924 KB	Output is correct
69	Correct	63 ms	13912 KB	Output is correct
70	Correct	66 ms	13912 KB	Output is correct
71	Correct	84 ms	14004 KB	Output is correct
72	Correct	62 ms	13920 KB	Output is correct
73	Correct	61 ms	15928 KB	Output is correct
74	Correct	62 ms	15964 KB	Output is correct
75	Correct	65 ms	15992 KB	Output is correct
76	Correct	67 ms	16036 KB	Output is correct
77	Correct	61 ms	15948 KB	Output is correct
78	Correct	67 ms	15844 KB	Output is correct
79	Correct	63 ms	15876 KB	Output is correct
80	Correct	64 ms	15940 KB	Output is correct
81	Correct	64 ms	15972 KB	Output is correct
82	Correct	62 ms	15888 KB	Output is correct
83	Correct	68 ms	15904 KB	Output is correct
84	Correct	75 ms	15848 KB	Output is correct
85	Correct	82 ms	15964 KB	Output is correct
86	Correct	63 ms	15944 KB	Output is correct
87	Correct	67 ms	15944 KB	Output is correct
88	Correct	64 ms	15848 KB	Output is correct
89	Correct	63 ms	15848 KB	Output is correct
90	Correct	64 ms	15896 KB	Output is correct
91	Correct	78 ms	15844 KB	Output is correct
92	Correct	63 ms	15848 KB	Output is correct
93	Correct	62 ms	15928 KB	Output is correct
94	Correct	61 ms	15844 KB	Output is correct
95	Correct	78 ms	15956 KB	Output is correct
96	Correct	72 ms	15912 KB	Output is correct
97	Correct	63 ms	15960 KB	Output is correct
98	Correct	66 ms	16020 KB	Output is correct
99	Correct	62 ms	15896 KB	Output is correct
100	Correct	80 ms	15928 KB	Output is correct
101	Correct	64 ms	15900 KB	Output is correct
102	Correct	64 ms	15948 KB	Output is correct

답안 #410275

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