답안 #331058

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
331058	2020-11-27T07:55:35 Z	lohacho	Lamps (JOI19_lamps)	C++14	100 / 100	265 ms	21996 KB

lamp

#include <bits/stdc++.h>

using namespace std;

using LL = long long;
const int MOD = (int)1e9 + 7;
const int NS = (int)1e6 + 4;
int N;
int A[NS], B[NS];
int dp[NS][3];

int cha(int x, int y){
    if(y != 2){
        return y;
    }
    return x;
}

int main(){
    scanf("%d", &N);
    for(int i = 1; i <= N; ++i){
        scanf("%1d", A + i);
    }
    for(int i = 1; i <= N; ++i){
        scanf("%1d", B + i);
    }
    for(int i = 0; i < NS; ++i){
        for(int j = 0; j < 3; ++j){
            dp[i][j] = MOD;
        }
    }
    dp[1][2] = 0;
    for(int i = 1; i <= N; ++i){
        for(int last = 0; last < 3; ++last){
            for(int now = 0; now < 3; ++now){
                int cost = 0;
                if(last != now && now != 2){
                    ++cost;
                }
                if((i == 1 || cha(A[i - 1], last) == B[i - 1]) && (cha(A[i], now) != B[i])){
                    ++cost;
                }
                dp[i + 1][now] = min(dp[i + 1][now], cost + dp[i][last]);
            }
        }
    }
    printf("%d", min({dp[N + 1][0], dp[N + 1][1], dp[N + 1][2]}));
    return 0;
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   20 |     scanf("%d", &N);
      |     ~~~~~^~~~~~~~~~
lamp.cpp:22:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |         scanf("%1d", A + i);
      |         ~~~~~^~~~~~~~~~~~~~
lamp.cpp:25:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   25 |         scanf("%1d", B + i);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	12288 KB	Output is correct
2	Correct	8 ms	12012 KB	Output is correct
3	Correct	8 ms	12012 KB	Output is correct
4	Correct	8 ms	12012 KB	Output is correct
5	Correct	8 ms	12012 KB	Output is correct
6	Correct	7 ms	12012 KB	Output is correct
7	Correct	8 ms	12012 KB	Output is correct
8	Correct	8 ms	12012 KB	Output is correct
9	Correct	8 ms	12012 KB	Output is correct
10	Correct	8 ms	12160 KB	Output is correct
11	Correct	8 ms	12012 KB	Output is correct
12	Correct	8 ms	12272 KB	Output is correct
13	Correct	8 ms	12012 KB	Output is correct
14	Correct	8 ms	12012 KB	Output is correct
15	Correct	8 ms	12012 KB	Output is correct
16	Correct	9 ms	12012 KB	Output is correct
17	Correct	8 ms	12012 KB	Output is correct
18	Correct	9 ms	12012 KB	Output is correct
19	Correct	8 ms	12012 KB	Output is correct
20	Correct	7 ms	12012 KB	Output is correct
21	Correct	8 ms	12012 KB	Output is correct
22	Correct	8 ms	12012 KB	Output is correct
23	Correct	8 ms	12012 KB	Output is correct
24	Correct	7 ms	12160 KB	Output is correct
25	Correct	8 ms	12012 KB	Output is correct
26	Correct	8 ms	12012 KB	Output is correct
27	Correct	9 ms	12140 KB	Output is correct
28	Correct	8 ms	12012 KB	Output is correct
29	Correct	8 ms	12032 KB	Output is correct
30	Correct	8 ms	12012 KB	Output is correct
31	Correct	8 ms	12012 KB	Output is correct
32	Correct	10 ms	12012 KB	Output is correct
33	Correct	8 ms	12012 KB	Output is correct
34	Correct	8 ms	12012 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	12288 KB	Output is correct
2	Correct	8 ms	12012 KB	Output is correct
3	Correct	8 ms	12012 KB	Output is correct
4	Correct	8 ms	12012 KB	Output is correct
5	Correct	8 ms	12012 KB	Output is correct
6	Correct	7 ms	12012 KB	Output is correct
7	Correct	8 ms	12012 KB	Output is correct
8	Correct	8 ms	12012 KB	Output is correct
9	Correct	8 ms	12012 KB	Output is correct
10	Correct	8 ms	12160 KB	Output is correct
11	Correct	8 ms	12012 KB	Output is correct
12	Correct	8 ms	12272 KB	Output is correct
13	Correct	8 ms	12012 KB	Output is correct
14	Correct	8 ms	12012 KB	Output is correct
15	Correct	8 ms	12012 KB	Output is correct
16	Correct	9 ms	12012 KB	Output is correct
17	Correct	8 ms	12012 KB	Output is correct
18	Correct	9 ms	12012 KB	Output is correct
19	Correct	8 ms	12012 KB	Output is correct
20	Correct	7 ms	12012 KB	Output is correct
21	Correct	8 ms	12012 KB	Output is correct
22	Correct	8 ms	12012 KB	Output is correct
23	Correct	8 ms	12012 KB	Output is correct
24	Correct	7 ms	12160 KB	Output is correct
25	Correct	8 ms	12012 KB	Output is correct
26	Correct	8 ms	12012 KB	Output is correct
27	Correct	9 ms	12140 KB	Output is correct
28	Correct	8 ms	12012 KB	Output is correct
29	Correct	8 ms	12032 KB	Output is correct
30	Correct	8 ms	12012 KB	Output is correct
31	Correct	8 ms	12012 KB	Output is correct
32	Correct	10 ms	12012 KB	Output is correct
33	Correct	8 ms	12012 KB	Output is correct
34	Correct	8 ms	12012 KB	Output is correct
35	Correct	8 ms	12140 KB	Output is correct
36	Correct	8 ms	12140 KB	Output is correct
37	Correct	9 ms	12140 KB	Output is correct
38	Correct	8 ms	12140 KB	Output is correct
39	Correct	8 ms	12032 KB	Output is correct
40	Correct	10 ms	12140 KB	Output is correct
41	Correct	8 ms	12140 KB	Output is correct
42	Correct	9 ms	12140 KB	Output is correct
43	Correct	9 ms	12140 KB	Output is correct
44	Correct	8 ms	12140 KB	Output is correct
45	Correct	8 ms	12140 KB	Output is correct
46	Correct	8 ms	12140 KB	Output is correct
47	Correct	8 ms	12140 KB	Output is correct
48	Correct	9 ms	12140 KB	Output is correct
49	Correct	8 ms	12140 KB	Output is correct
50	Correct	8 ms	12140 KB	Output is correct
51	Correct	9 ms	12028 KB	Output is correct
52	Correct	8 ms	12140 KB	Output is correct
53	Correct	9 ms	12140 KB	Output is correct
54	Correct	8 ms	12140 KB	Output is correct
55	Correct	8 ms	12140 KB	Output is correct
56	Correct	9 ms	12140 KB	Output is correct
57	Correct	8 ms	12160 KB	Output is correct
58	Correct	8 ms	12140 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	12012 KB	Output is correct
2	Correct	8 ms	12012 KB	Output is correct
3	Correct	8 ms	12012 KB	Output is correct
4	Correct	9 ms	12012 KB	Output is correct
5	Correct	8 ms	12012 KB	Output is correct
6	Correct	8 ms	12012 KB	Output is correct
7	Correct	214 ms	21996 KB	Output is correct
8	Correct	228 ms	21868 KB	Output is correct
9	Correct	222 ms	21868 KB	Output is correct
10	Correct	226 ms	21868 KB	Output is correct
11	Correct	226 ms	21888 KB	Output is correct
12	Correct	215 ms	21868 KB	Output is correct
13	Correct	210 ms	21868 KB	Output is correct
14	Correct	212 ms	21868 KB	Output is correct

Subtask #4
49.0 / 49.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	12288 KB	Output is correct
2	Correct	8 ms	12012 KB	Output is correct
3	Correct	8 ms	12012 KB	Output is correct
4	Correct	8 ms	12012 KB	Output is correct
5	Correct	8 ms	12012 KB	Output is correct
6	Correct	7 ms	12012 KB	Output is correct
7	Correct	8 ms	12012 KB	Output is correct
8	Correct	8 ms	12012 KB	Output is correct
9	Correct	8 ms	12012 KB	Output is correct
10	Correct	8 ms	12160 KB	Output is correct
11	Correct	8 ms	12012 KB	Output is correct
12	Correct	8 ms	12272 KB	Output is correct
13	Correct	8 ms	12012 KB	Output is correct
14	Correct	8 ms	12012 KB	Output is correct
15	Correct	8 ms	12012 KB	Output is correct
16	Correct	9 ms	12012 KB	Output is correct
17	Correct	8 ms	12012 KB	Output is correct
18	Correct	9 ms	12012 KB	Output is correct
19	Correct	8 ms	12012 KB	Output is correct
20	Correct	7 ms	12012 KB	Output is correct
21	Correct	8 ms	12012 KB	Output is correct
22	Correct	8 ms	12012 KB	Output is correct
23	Correct	8 ms	12012 KB	Output is correct
24	Correct	7 ms	12160 KB	Output is correct
25	Correct	8 ms	12012 KB	Output is correct
26	Correct	8 ms	12012 KB	Output is correct
27	Correct	9 ms	12140 KB	Output is correct
28	Correct	8 ms	12012 KB	Output is correct
29	Correct	8 ms	12032 KB	Output is correct
30	Correct	8 ms	12012 KB	Output is correct
31	Correct	8 ms	12012 KB	Output is correct
32	Correct	10 ms	12012 KB	Output is correct
33	Correct	8 ms	12012 KB	Output is correct
34	Correct	8 ms	12012 KB	Output is correct
35	Correct	8 ms	12140 KB	Output is correct
36	Correct	8 ms	12140 KB	Output is correct
37	Correct	9 ms	12140 KB	Output is correct
38	Correct	8 ms	12140 KB	Output is correct
39	Correct	8 ms	12032 KB	Output is correct
40	Correct	10 ms	12140 KB	Output is correct
41	Correct	8 ms	12140 KB	Output is correct
42	Correct	9 ms	12140 KB	Output is correct
43	Correct	9 ms	12140 KB	Output is correct
44	Correct	8 ms	12140 KB	Output is correct
45	Correct	8 ms	12140 KB	Output is correct
46	Correct	8 ms	12140 KB	Output is correct
47	Correct	8 ms	12140 KB	Output is correct
48	Correct	9 ms	12140 KB	Output is correct
49	Correct	8 ms	12140 KB	Output is correct
50	Correct	8 ms	12140 KB	Output is correct
51	Correct	9 ms	12028 KB	Output is correct
52	Correct	8 ms	12140 KB	Output is correct
53	Correct	9 ms	12140 KB	Output is correct
54	Correct	8 ms	12140 KB	Output is correct
55	Correct	8 ms	12140 KB	Output is correct
56	Correct	9 ms	12140 KB	Output is correct
57	Correct	8 ms	12160 KB	Output is correct
58	Correct	8 ms	12140 KB	Output is correct
59	Correct	8 ms	12012 KB	Output is correct
60	Correct	8 ms	12012 KB	Output is correct
61	Correct	8 ms	12012 KB	Output is correct
62	Correct	9 ms	12012 KB	Output is correct
63	Correct	8 ms	12012 KB	Output is correct
64	Correct	8 ms	12012 KB	Output is correct
65	Correct	214 ms	21996 KB	Output is correct
66	Correct	228 ms	21868 KB	Output is correct
67	Correct	222 ms	21868 KB	Output is correct
68	Correct	226 ms	21868 KB	Output is correct
69	Correct	226 ms	21888 KB	Output is correct
70	Correct	215 ms	21868 KB	Output is correct
71	Correct	210 ms	21868 KB	Output is correct
72	Correct	212 ms	21868 KB	Output is correct
73	Correct	226 ms	21868 KB	Output is correct
74	Correct	245 ms	21856 KB	Output is correct
75	Correct	265 ms	21996 KB	Output is correct
76	Correct	238 ms	21868 KB	Output is correct
77	Correct	238 ms	21868 KB	Output is correct
78	Correct	241 ms	21868 KB	Output is correct
79	Correct	235 ms	21868 KB	Output is correct
80	Correct	233 ms	21868 KB	Output is correct
81	Correct	225 ms	21868 KB	Output is correct
82	Correct	226 ms	21868 KB	Output is correct
83	Correct	230 ms	21868 KB	Output is correct
84	Correct	222 ms	21868 KB	Output is correct
85	Correct	229 ms	21868 KB	Output is correct
86	Correct	225 ms	21868 KB	Output is correct
87	Correct	227 ms	21868 KB	Output is correct
88	Correct	224 ms	21868 KB	Output is correct
89	Correct	224 ms	21832 KB	Output is correct
90	Correct	227 ms	21996 KB	Output is correct
91	Correct	231 ms	21868 KB	Output is correct
92	Correct	237 ms	21868 KB	Output is correct
93	Correct	235 ms	21868 KB	Output is correct
94	Correct	234 ms	21868 KB	Output is correct
95	Correct	235 ms	21832 KB	Output is correct
96	Correct	236 ms	21868 KB	Output is correct
97	Correct	236 ms	21868 KB	Output is correct
98	Correct	236 ms	21868 KB	Output is correct
99	Correct	242 ms	21996 KB	Output is correct
100	Correct	236 ms	21868 KB	Output is correct
101	Correct	234 ms	21996 KB	Output is correct
102	Correct	239 ms	21996 KB	Output is correct

답안 #331058

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