oj.uz

Submission #331058

# Submission time Handle Problem Language Result Execution time Memory
331058 2020-11-27T07:55:35 Z lohacho Lamps (JOI19_lamps) C++14
100 / 100
 265 ms 21996 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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