답안 #114300

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
114300	2019-05-31T18:37:41 Z	tincamatei	Lamps (JOI19_lamps)	C++14	100 / 100	144 ms	27896 KB

lamp

#include <bits/stdc++.h>

using namespace std;

char getChar(FILE *fin) {
	char ch = fgetc(fin);
	while(!isdigit(ch))
		ch = fgetc(fin);
	return ch;
}

const int MAX_N = 1000000;

char str1[1+MAX_N];
char str2[1+MAX_N];

int dp[1+MAX_N][3][2];

// dp[N][0/1/2][0/1] = numarul minim de operatii daca la sfarsit n-am/am set 0/am set 1 si daca n-am/am operatie de xor

int main() {
	int N, rez = MAX_N;
	scanf("%d", &N);

	for(int i = 1; i <= N; ++i)
		str1[i] = getChar(stdin);
	for(int i = 1; i <= N; ++i)
		str2[i] = getChar(stdin);

	for(int i = 0; i <= N; ++i)
		for(int setmask = 0; setmask < 3; ++setmask)
			for(int xormask = 0; xormask < 2; ++xormask)
				dp[i][setmask][xormask] = MAX_N + 1;
	dp[0][0][0] = 0;

	for(int i = 1; i <= N; ++i) {
		for(int setmask1 = 0; setmask1 < 3; ++setmask1)
			for(int xormask1 = 0; xormask1 < 2; ++xormask1)
				for(int setmask2 = 0; setmask2 < 3; ++setmask2)
					for(int xormask2 = 0; xormask2 < 2; ++xormask2) {
						char chVal = str1[i];
						int cost = 0;

						if(setmask2 == 1)
							chVal = '0';
						else if(setmask2 == 2)
							chVal = '1';

						if(xormask2 == 1)
							chVal = '0' + '1' - chVal;
						
						if(setmask1 != setmask2 && setmask2 != 0)
							++cost;
						if(xormask1 != xormask2 && xormask2 != 0)
							++cost;
						
						if(chVal == str2[i])
							dp[i][setmask2][xormask2] = min(dp[i - 1][setmask1][xormask1] + cost, 
							                                dp[i][setmask2][xormask2]);
					}
	}

	for(int setmask = 0; setmask < 3; ++setmask)
		for(int xormask = 0; xormask < 2; ++xormask)
			rez = min(rez, dp[N][setmask][xormask]);

	printf("%d", rez);
	return 0;
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:23:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	384 KB	Output is correct
2	Correct	2 ms	384 KB	Output is correct
3	Correct	1 ms	256 KB	Output is correct
4	Correct	2 ms	384 KB	Output is correct
5	Correct	2 ms	384 KB	Output is correct
6	Correct	2 ms	384 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	2 ms	384 KB	Output is correct
9	Correct	2 ms	384 KB	Output is correct
10	Correct	2 ms	384 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	1 ms	256 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	384 KB	Output is correct
23	Correct	2 ms	384 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	2 ms	384 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	2 ms	384 KB	Output is correct
28	Correct	2 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	2 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	2 ms	384 KB	Output is correct
33	Correct	2 ms	384 KB	Output is correct
34	Correct	2 ms	384 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	384 KB	Output is correct
2	Correct	2 ms	384 KB	Output is correct
3	Correct	1 ms	256 KB	Output is correct
4	Correct	2 ms	384 KB	Output is correct
5	Correct	2 ms	384 KB	Output is correct
6	Correct	2 ms	384 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	2 ms	384 KB	Output is correct
9	Correct	2 ms	384 KB	Output is correct
10	Correct	2 ms	384 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	1 ms	256 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	384 KB	Output is correct
23	Correct	2 ms	384 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	2 ms	384 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	2 ms	384 KB	Output is correct
28	Correct	2 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	2 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	2 ms	384 KB	Output is correct
33	Correct	2 ms	384 KB	Output is correct
34	Correct	2 ms	384 KB	Output is correct
35	Correct	2 ms	384 KB	Output is correct
36	Correct	2 ms	384 KB	Output is correct
37	Correct	3 ms	384 KB	Output is correct
38	Correct	2 ms	384 KB	Output is correct
39	Correct	2 ms	384 KB	Output is correct
40	Correct	2 ms	384 KB	Output is correct
41	Correct	2 ms	384 KB	Output is correct
42	Correct	2 ms	384 KB	Output is correct
43	Correct	2 ms	384 KB	Output is correct
44	Correct	2 ms	384 KB	Output is correct
45	Correct	2 ms	384 KB	Output is correct
46	Correct	2 ms	384 KB	Output is correct
47	Correct	2 ms	384 KB	Output is correct
48	Correct	2 ms	384 KB	Output is correct
49	Correct	2 ms	384 KB	Output is correct
50	Correct	3 ms	384 KB	Output is correct
51	Correct	2 ms	384 KB	Output is correct
52	Correct	2 ms	384 KB	Output is correct
53	Correct	2 ms	384 KB	Output is correct
54	Correct	2 ms	384 KB	Output is correct
55	Correct	2 ms	384 KB	Output is correct
56	Correct	2 ms	460 KB	Output is correct
57	Correct	2 ms	384 KB	Output is correct
58	Correct	2 ms	384 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	2 ms	384 KB	Output is correct
3	Correct	2 ms	384 KB	Output is correct
4	Correct	2 ms	384 KB	Output is correct
5	Correct	2 ms	384 KB	Output is correct
6	Correct	2 ms	384 KB	Output is correct
7	Correct	144 ms	27768 KB	Output is correct
8	Correct	111 ms	27768 KB	Output is correct
9	Correct	113 ms	27844 KB	Output is correct
10	Correct	113 ms	27740 KB	Output is correct
11	Correct	109 ms	27768 KB	Output is correct
12	Correct	101 ms	27752 KB	Output is correct
13	Correct	109 ms	27768 KB	Output is correct
14	Correct	108 ms	27768 KB	Output is correct

Subtask #4
49.0 / 49.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	384 KB	Output is correct
2	Correct	2 ms	384 KB	Output is correct
3	Correct	1 ms	256 KB	Output is correct
4	Correct	2 ms	384 KB	Output is correct
5	Correct	2 ms	384 KB	Output is correct
6	Correct	2 ms	384 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	2 ms	384 KB	Output is correct
9	Correct	2 ms	384 KB	Output is correct
10	Correct	2 ms	384 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	1 ms	256 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	384 KB	Output is correct
23	Correct	2 ms	384 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	2 ms	384 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	2 ms	384 KB	Output is correct
28	Correct	2 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	2 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	2 ms	384 KB	Output is correct
33	Correct	2 ms	384 KB	Output is correct
34	Correct	2 ms	384 KB	Output is correct
35	Correct	2 ms	384 KB	Output is correct
36	Correct	2 ms	384 KB	Output is correct
37	Correct	3 ms	384 KB	Output is correct
38	Correct	2 ms	384 KB	Output is correct
39	Correct	2 ms	384 KB	Output is correct
40	Correct	2 ms	384 KB	Output is correct
41	Correct	2 ms	384 KB	Output is correct
42	Correct	2 ms	384 KB	Output is correct
43	Correct	2 ms	384 KB	Output is correct
44	Correct	2 ms	384 KB	Output is correct
45	Correct	2 ms	384 KB	Output is correct
46	Correct	2 ms	384 KB	Output is correct
47	Correct	2 ms	384 KB	Output is correct
48	Correct	2 ms	384 KB	Output is correct
49	Correct	2 ms	384 KB	Output is correct
50	Correct	3 ms	384 KB	Output is correct
51	Correct	2 ms	384 KB	Output is correct
52	Correct	2 ms	384 KB	Output is correct
53	Correct	2 ms	384 KB	Output is correct
54	Correct	2 ms	384 KB	Output is correct
55	Correct	2 ms	384 KB	Output is correct
56	Correct	2 ms	460 KB	Output is correct
57	Correct	2 ms	384 KB	Output is correct
58	Correct	2 ms	384 KB	Output is correct
59	Correct	1 ms	384 KB	Output is correct
60	Correct	2 ms	384 KB	Output is correct
61	Correct	2 ms	384 KB	Output is correct
62	Correct	2 ms	384 KB	Output is correct
63	Correct	2 ms	384 KB	Output is correct
64	Correct	2 ms	384 KB	Output is correct
65	Correct	144 ms	27768 KB	Output is correct
66	Correct	111 ms	27768 KB	Output is correct
67	Correct	113 ms	27844 KB	Output is correct
68	Correct	113 ms	27740 KB	Output is correct
69	Correct	109 ms	27768 KB	Output is correct
70	Correct	101 ms	27752 KB	Output is correct
71	Correct	109 ms	27768 KB	Output is correct
72	Correct	108 ms	27768 KB	Output is correct
73	Correct	120 ms	27808 KB	Output is correct
74	Correct	114 ms	27768 KB	Output is correct
75	Correct	100 ms	27804 KB	Output is correct
76	Correct	101 ms	27768 KB	Output is correct
77	Correct	114 ms	27772 KB	Output is correct
78	Correct	108 ms	27768 KB	Output is correct
79	Correct	136 ms	27892 KB	Output is correct
80	Correct	100 ms	27768 KB	Output is correct
81	Correct	108 ms	27768 KB	Output is correct
82	Correct	106 ms	27768 KB	Output is correct
83	Correct	108 ms	27768 KB	Output is correct
84	Correct	111 ms	27896 KB	Output is correct
85	Correct	107 ms	27784 KB	Output is correct
86	Correct	109 ms	27768 KB	Output is correct
87	Correct	112 ms	27768 KB	Output is correct
88	Correct	108 ms	27764 KB	Output is correct
89	Correct	108 ms	27868 KB	Output is correct
90	Correct	107 ms	27768 KB	Output is correct
91	Correct	117 ms	27784 KB	Output is correct
92	Correct	115 ms	27768 KB	Output is correct
93	Correct	113 ms	27740 KB	Output is correct
94	Correct	115 ms	27744 KB	Output is correct
95	Correct	115 ms	27768 KB	Output is correct
96	Correct	115 ms	27768 KB	Output is correct
97	Correct	112 ms	27768 KB	Output is correct
98	Correct	116 ms	27772 KB	Output is correct
99	Correct	115 ms	27768 KB	Output is correct
100	Correct	115 ms	27776 KB	Output is correct
101	Correct	127 ms	27788 KB	Output is correct
102	Correct	113 ms	27768 KB	Output is correct

답안 #114300

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