답안 #260518

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
260518	2020-08-10T12:39:10 Z	stefantaga	Global Warming (CEOI18_glo)	C++14	100 / 100	99 ms	12408 KB

#include <cstdio>


inline int max(int a, int b) {
    return a > b ? a : b;
}

int n, X, res;
const int maxN = 2e5+10;


int dp_max[maxN];
int dp_min[maxN];
int mx_i, mn_i;

int find(int* dp, int i, int val) {
    int a = -1, b = i, avg;
    while(b - a > 1) {
        avg = (a + b) / 2;
        if(dp[avg] < val) a = avg;
        else b = avg;
    }
    return b;
}

int add(int* dp, int &i, int val) {
    int b = find(dp, i, val);
    dp[b] = val;
    i = max(i, b + 1);
    return b;
}

void count(int left) {
    if(left == 0)
        return;

    int val;
    scanf("%d", &val);
    int b_here = add(dp_max, mx_i, val);

    count(left - 1);

    res = max(b_here + find(dp_min, mn_i, -val+X) + 1, res);
    add(dp_min, mn_i, -val);
}


int main() {
    scanf("%d%d", &n, &X);
    count(n);
    printf("%d\n", res);
}

Compilation message

glo.cpp: In function 'void count(int)':
glo.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &val);
     ~~~~~^~~~~~~~~~~~
glo.cpp: In function 'int main()':
glo.cpp:49:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &X);
     ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	256 KB	Output is correct
2	Correct	0 ms	256 KB	Output is correct
3	Correct	0 ms	256 KB	Output is correct
4	Correct	0 ms	256 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	0 ms	256 KB	Output is correct
7	Correct	0 ms	256 KB	Output is correct
8	Correct	0 ms	256 KB	Output is correct
9	Correct	1 ms	256 KB	Output is correct
10	Correct	0 ms	256 KB	Output is correct
11	Correct	0 ms	256 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	256 KB	Output is correct
2	Correct	0 ms	256 KB	Output is correct
3	Correct	0 ms	256 KB	Output is correct
4	Correct	0 ms	256 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	0 ms	256 KB	Output is correct
7	Correct	0 ms	256 KB	Output is correct
8	Correct	0 ms	256 KB	Output is correct
9	Correct	1 ms	256 KB	Output is correct
10	Correct	0 ms	256 KB	Output is correct
11	Correct	0 ms	256 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	256 KB	Output is correct
14	Correct	1 ms	256 KB	Output is correct
15	Correct	1 ms	256 KB	Output is correct
16	Correct	0 ms	256 KB	Output is correct
17	Correct	0 ms	256 KB	Output is correct
18	Correct	0 ms	256 KB	Output is correct

Subtask #3
13.0 / 13.0

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

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	73 ms	10488 KB	Output is correct
2	Correct	75 ms	11644 KB	Output is correct
3	Correct	91 ms	11640 KB	Output is correct
4	Correct	77 ms	11640 KB	Output is correct
5	Correct	89 ms	11680 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	3072 KB	Output is correct
2	Correct	21 ms	3200 KB	Output is correct
3	Correct	19 ms	3072 KB	Output is correct
4	Correct	20 ms	3200 KB	Output is correct
5	Correct	0 ms	288 KB	Output is correct
6	Correct	22 ms	3200 KB	Output is correct
7	Correct	19 ms	3200 KB	Output is correct

Subtask #6
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	37 ms	5752 KB	Output is correct
2	Correct	38 ms	6008 KB	Output is correct
3	Correct	76 ms	11640 KB	Output is correct
4	Correct	99 ms	11740 KB	Output is correct
5	Correct	40 ms	6008 KB	Output is correct
6	Correct	65 ms	11128 KB	Output is correct
7	Correct	76 ms	11768 KB	Output is correct
8	Correct	35 ms	6052 KB	Output is correct

Subtask #7
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	256 KB	Output is correct
2	Correct	0 ms	256 KB	Output is correct
3	Correct	0 ms	256 KB	Output is correct
4	Correct	0 ms	256 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	0 ms	256 KB	Output is correct
7	Correct	0 ms	256 KB	Output is correct
8	Correct	0 ms	256 KB	Output is correct
9	Correct	1 ms	256 KB	Output is correct
10	Correct	0 ms	256 KB	Output is correct
11	Correct	0 ms	256 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	256 KB	Output is correct
14	Correct	1 ms	256 KB	Output is correct
15	Correct	1 ms	256 KB	Output is correct
16	Correct	0 ms	256 KB	Output is correct
17	Correct	0 ms	256 KB	Output is correct
18	Correct	0 ms	256 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	384 KB	Output is correct
24	Correct	1 ms	384 KB	Output is correct
25	Correct	1 ms	384 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	73 ms	10488 KB	Output is correct
28	Correct	75 ms	11644 KB	Output is correct
29	Correct	91 ms	11640 KB	Output is correct
30	Correct	77 ms	11640 KB	Output is correct
31	Correct	89 ms	11680 KB	Output is correct
32	Correct	20 ms	3072 KB	Output is correct
33	Correct	21 ms	3200 KB	Output is correct
34	Correct	19 ms	3072 KB	Output is correct
35	Correct	20 ms	3200 KB	Output is correct
36	Correct	0 ms	288 KB	Output is correct
37	Correct	22 ms	3200 KB	Output is correct
38	Correct	19 ms	3200 KB	Output is correct
39	Correct	37 ms	5752 KB	Output is correct
40	Correct	38 ms	6008 KB	Output is correct
41	Correct	76 ms	11640 KB	Output is correct
42	Correct	99 ms	11740 KB	Output is correct
43	Correct	40 ms	6008 KB	Output is correct
44	Correct	65 ms	11128 KB	Output is correct
45	Correct	76 ms	11768 KB	Output is correct
46	Correct	35 ms	6052 KB	Output is correct
47	Correct	40 ms	6016 KB	Output is correct
48	Correct	37 ms	6008 KB	Output is correct
49	Correct	76 ms	11640 KB	Output is correct
50	Correct	91 ms	11640 KB	Output is correct
51	Correct	67 ms	8952 KB	Output is correct
52	Correct	83 ms	11768 KB	Output is correct
53	Correct	69 ms	11768 KB	Output is correct
54	Correct	81 ms	12408 KB	Output is correct
55	Correct	71 ms	11640 KB	Output is correct

답안 #260518

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 13.0 / 13.0

Subtask #4 10.0 / 10.0

Subtask #5 20.0 / 20.0

Subtask #6 17.0 / 17.0

Subtask #7 25.0 / 25.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
13.0 / 13.0

Subtask #4
10.0 / 10.0

Subtask #5
20.0 / 20.0

Subtask #6
17.0 / 17.0

Subtask #7
25.0 / 25.0