답안 #210734

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
210734	2020-03-18T08:25:32 Z	arman_ferdous	Lamps (JOI19_lamps)	C++17	100 / 100	252 ms	113912 KB

lamp

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

using ll = long long;
const int N = 1e6+10;
const int oo = 1e9;

int n, ans;
char a[N], b[N];

int dp[8][N];

int get(int x, int mask) {
	if(mask & 1) x = 0;
	if(mask & 2) x = 1;
	if(mask & 4) x ^= 1;
	return x;
}

int DP(int prev, int pos) {
	if(pos < 0) return 0;
	if(dp[prev][pos] != -1) return dp[prev][pos];

	int &ret = dp[prev][pos]; ret = oo;
	for(int i = 0; i < 7; i++)
		if(get(a[pos] - '0', i) == b[pos] - '0')
			ret = min(ret, __builtin_popcount(~prev & i) + DP(i, pos - 1));
	return ret;
}

int main() {
	scanf("%d", &n);	
	scanf(" %s %s", a, b);
    memset(dp, -1, sizeof dp);
    printf("%d\n", DP(0, n - 1));
	return 0;
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n); 
  ~~~~~^~~~~~~~~~
lamp.cpp:33:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf(" %s %s", a, b);
  ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	31608 KB	Output is correct
2	Correct	21 ms	31608 KB	Output is correct
3	Correct	20 ms	31608 KB	Output is correct
4	Correct	20 ms	31608 KB	Output is correct
5	Correct	20 ms	31608 KB	Output is correct
6	Correct	19 ms	31608 KB	Output is correct
7	Correct	20 ms	31608 KB	Output is correct
8	Correct	19 ms	31608 KB	Output is correct
9	Correct	20 ms	31608 KB	Output is correct
10	Correct	19 ms	31608 KB	Output is correct
11	Correct	21 ms	31608 KB	Output is correct
12	Correct	20 ms	31608 KB	Output is correct
13	Correct	20 ms	31656 KB	Output is correct
14	Correct	19 ms	31608 KB	Output is correct
15	Correct	20 ms	31608 KB	Output is correct
16	Correct	21 ms	31608 KB	Output is correct
17	Correct	22 ms	31608 KB	Output is correct
18	Correct	21 ms	31656 KB	Output is correct
19	Correct	20 ms	31608 KB	Output is correct
20	Correct	20 ms	31608 KB	Output is correct
21	Correct	21 ms	31608 KB	Output is correct
22	Correct	21 ms	31608 KB	Output is correct
23	Correct	20 ms	31608 KB	Output is correct
24	Correct	20 ms	31608 KB	Output is correct
25	Correct	21 ms	31612 KB	Output is correct
26	Correct	20 ms	31608 KB	Output is correct
27	Correct	20 ms	31608 KB	Output is correct
28	Correct	20 ms	31608 KB	Output is correct
29	Correct	21 ms	31608 KB	Output is correct
30	Correct	20 ms	31608 KB	Output is correct
31	Correct	20 ms	31608 KB	Output is correct
32	Correct	20 ms	31608 KB	Output is correct
33	Correct	20 ms	31608 KB	Output is correct
34	Correct	19 ms	31608 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	31608 KB	Output is correct
2	Correct	21 ms	31608 KB	Output is correct
3	Correct	20 ms	31608 KB	Output is correct
4	Correct	20 ms	31608 KB	Output is correct
5	Correct	20 ms	31608 KB	Output is correct
6	Correct	19 ms	31608 KB	Output is correct
7	Correct	20 ms	31608 KB	Output is correct
8	Correct	19 ms	31608 KB	Output is correct
9	Correct	20 ms	31608 KB	Output is correct
10	Correct	19 ms	31608 KB	Output is correct
11	Correct	21 ms	31608 KB	Output is correct
12	Correct	20 ms	31608 KB	Output is correct
13	Correct	20 ms	31656 KB	Output is correct
14	Correct	19 ms	31608 KB	Output is correct
15	Correct	20 ms	31608 KB	Output is correct
16	Correct	21 ms	31608 KB	Output is correct
17	Correct	22 ms	31608 KB	Output is correct
18	Correct	21 ms	31656 KB	Output is correct
19	Correct	20 ms	31608 KB	Output is correct
20	Correct	20 ms	31608 KB	Output is correct
21	Correct	21 ms	31608 KB	Output is correct
22	Correct	21 ms	31608 KB	Output is correct
23	Correct	20 ms	31608 KB	Output is correct
24	Correct	20 ms	31608 KB	Output is correct
25	Correct	21 ms	31612 KB	Output is correct
26	Correct	20 ms	31608 KB	Output is correct
27	Correct	20 ms	31608 KB	Output is correct
28	Correct	20 ms	31608 KB	Output is correct
29	Correct	21 ms	31608 KB	Output is correct
30	Correct	20 ms	31608 KB	Output is correct
31	Correct	20 ms	31608 KB	Output is correct
32	Correct	20 ms	31608 KB	Output is correct
33	Correct	20 ms	31608 KB	Output is correct
34	Correct	19 ms	31608 KB	Output is correct
35	Correct	21 ms	31736 KB	Output is correct
36	Correct	20 ms	31784 KB	Output is correct
37	Correct	20 ms	31736 KB	Output is correct
38	Correct	21 ms	31736 KB	Output is correct
39	Correct	20 ms	31736 KB	Output is correct
40	Correct	21 ms	31736 KB	Output is correct
41	Correct	21 ms	31736 KB	Output is correct
42	Correct	22 ms	31736 KB	Output is correct
43	Correct	20 ms	31736 KB	Output is correct
44	Correct	21 ms	31736 KB	Output is correct
45	Correct	21 ms	31736 KB	Output is correct
46	Correct	21 ms	31736 KB	Output is correct
47	Correct	20 ms	31736 KB	Output is correct
48	Correct	21 ms	31864 KB	Output is correct
49	Correct	22 ms	31864 KB	Output is correct
50	Correct	21 ms	31740 KB	Output is correct
51	Correct	21 ms	31736 KB	Output is correct
52	Correct	20 ms	31736 KB	Output is correct
53	Correct	21 ms	31736 KB	Output is correct
54	Correct	20 ms	31736 KB	Output is correct
55	Correct	21 ms	31740 KB	Output is correct
56	Correct	20 ms	31864 KB	Output is correct
57	Correct	21 ms	31740 KB	Output is correct
58	Correct	20 ms	31736 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	31608 KB	Output is correct
2	Correct	20 ms	31608 KB	Output is correct
3	Correct	20 ms	31608 KB	Output is correct
4	Correct	21 ms	31608 KB	Output is correct
5	Correct	20 ms	31608 KB	Output is correct
6	Correct	20 ms	31608 KB	Output is correct
7	Correct	168 ms	113784 KB	Output is correct
8	Correct	211 ms	113784 KB	Output is correct
9	Correct	210 ms	113784 KB	Output is correct
10	Correct	208 ms	113784 KB	Output is correct
11	Correct	205 ms	113784 KB	Output is correct
12	Correct	245 ms	113784 KB	Output is correct
13	Correct	227 ms	113784 KB	Output is correct
14	Correct	208 ms	113784 KB	Output is correct

Subtask #4
49.0 / 49.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	31608 KB	Output is correct
2	Correct	21 ms	31608 KB	Output is correct
3	Correct	20 ms	31608 KB	Output is correct
4	Correct	20 ms	31608 KB	Output is correct
5	Correct	20 ms	31608 KB	Output is correct
6	Correct	19 ms	31608 KB	Output is correct
7	Correct	20 ms	31608 KB	Output is correct
8	Correct	19 ms	31608 KB	Output is correct
9	Correct	20 ms	31608 KB	Output is correct
10	Correct	19 ms	31608 KB	Output is correct
11	Correct	21 ms	31608 KB	Output is correct
12	Correct	20 ms	31608 KB	Output is correct
13	Correct	20 ms	31656 KB	Output is correct
14	Correct	19 ms	31608 KB	Output is correct
15	Correct	20 ms	31608 KB	Output is correct
16	Correct	21 ms	31608 KB	Output is correct
17	Correct	22 ms	31608 KB	Output is correct
18	Correct	21 ms	31656 KB	Output is correct
19	Correct	20 ms	31608 KB	Output is correct
20	Correct	20 ms	31608 KB	Output is correct
21	Correct	21 ms	31608 KB	Output is correct
22	Correct	21 ms	31608 KB	Output is correct
23	Correct	20 ms	31608 KB	Output is correct
24	Correct	20 ms	31608 KB	Output is correct
25	Correct	21 ms	31612 KB	Output is correct
26	Correct	20 ms	31608 KB	Output is correct
27	Correct	20 ms	31608 KB	Output is correct
28	Correct	20 ms	31608 KB	Output is correct
29	Correct	21 ms	31608 KB	Output is correct
30	Correct	20 ms	31608 KB	Output is correct
31	Correct	20 ms	31608 KB	Output is correct
32	Correct	20 ms	31608 KB	Output is correct
33	Correct	20 ms	31608 KB	Output is correct
34	Correct	19 ms	31608 KB	Output is correct
35	Correct	21 ms	31736 KB	Output is correct
36	Correct	20 ms	31784 KB	Output is correct
37	Correct	20 ms	31736 KB	Output is correct
38	Correct	21 ms	31736 KB	Output is correct
39	Correct	20 ms	31736 KB	Output is correct
40	Correct	21 ms	31736 KB	Output is correct
41	Correct	21 ms	31736 KB	Output is correct
42	Correct	22 ms	31736 KB	Output is correct
43	Correct	20 ms	31736 KB	Output is correct
44	Correct	21 ms	31736 KB	Output is correct
45	Correct	21 ms	31736 KB	Output is correct
46	Correct	21 ms	31736 KB	Output is correct
47	Correct	20 ms	31736 KB	Output is correct
48	Correct	21 ms	31864 KB	Output is correct
49	Correct	22 ms	31864 KB	Output is correct
50	Correct	21 ms	31740 KB	Output is correct
51	Correct	21 ms	31736 KB	Output is correct
52	Correct	20 ms	31736 KB	Output is correct
53	Correct	21 ms	31736 KB	Output is correct
54	Correct	20 ms	31736 KB	Output is correct
55	Correct	21 ms	31740 KB	Output is correct
56	Correct	20 ms	31864 KB	Output is correct
57	Correct	21 ms	31740 KB	Output is correct
58	Correct	20 ms	31736 KB	Output is correct
59	Correct	21 ms	31608 KB	Output is correct
60	Correct	20 ms	31608 KB	Output is correct
61	Correct	20 ms	31608 KB	Output is correct
62	Correct	21 ms	31608 KB	Output is correct
63	Correct	20 ms	31608 KB	Output is correct
64	Correct	20 ms	31608 KB	Output is correct
65	Correct	168 ms	113784 KB	Output is correct
66	Correct	211 ms	113784 KB	Output is correct
67	Correct	210 ms	113784 KB	Output is correct
68	Correct	208 ms	113784 KB	Output is correct
69	Correct	205 ms	113784 KB	Output is correct
70	Correct	245 ms	113784 KB	Output is correct
71	Correct	227 ms	113784 KB	Output is correct
72	Correct	208 ms	113784 KB	Output is correct
73	Correct	175 ms	113784 KB	Output is correct
74	Correct	211 ms	113784 KB	Output is correct
75	Correct	207 ms	113824 KB	Output is correct
76	Correct	208 ms	113784 KB	Output is correct
77	Correct	208 ms	113784 KB	Output is correct
78	Correct	211 ms	113784 KB	Output is correct
79	Correct	206 ms	113784 KB	Output is correct
80	Correct	216 ms	113784 KB	Output is correct
81	Correct	207 ms	113784 KB	Output is correct
82	Correct	208 ms	113784 KB	Output is correct
83	Correct	231 ms	113784 KB	Output is correct
84	Correct	231 ms	113784 KB	Output is correct
85	Correct	230 ms	113784 KB	Output is correct
86	Correct	230 ms	113784 KB	Output is correct
87	Correct	231 ms	113784 KB	Output is correct
88	Correct	233 ms	113784 KB	Output is correct
89	Correct	252 ms	113788 KB	Output is correct
90	Correct	241 ms	113784 KB	Output is correct
91	Correct	243 ms	113784 KB	Output is correct
92	Correct	244 ms	113788 KB	Output is correct
93	Correct	244 ms	113784 KB	Output is correct
94	Correct	246 ms	113784 KB	Output is correct
95	Correct	247 ms	113784 KB	Output is correct
96	Correct	245 ms	113784 KB	Output is correct
97	Correct	246 ms	113784 KB	Output is correct
98	Correct	247 ms	113784 KB	Output is correct
99	Correct	247 ms	113784 KB	Output is correct
100	Correct	247 ms	113784 KB	Output is correct
101	Correct	245 ms	113784 KB	Output is correct
102	Correct	250 ms	113912 KB	Output is correct

답안 #210734

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