답안 #70181 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
70181	2018-08-22T13:02:53 Z	model_code	Global Warming (CEOI18_glo)	C++17	100 / 100	100 ms	10804 KB

// Patryk Czajka
// O(n*logn)

#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:41:10: 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:52:10: 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	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	444 KB	Output is correct
4	Correct	3 ms	460 KB	Output is correct
5	Correct	2 ms	460 KB	Output is correct
6	Correct	2 ms	512 KB	Output is correct
7	Correct	2 ms	512 KB	Output is correct
8	Correct	2 ms	560 KB	Output is correct
9	Correct	2 ms	560 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	3 ms	560 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	444 KB	Output is correct
4	Correct	3 ms	460 KB	Output is correct
5	Correct	2 ms	460 KB	Output is correct
6	Correct	2 ms	512 KB	Output is correct
7	Correct	2 ms	512 KB	Output is correct
8	Correct	2 ms	560 KB	Output is correct
9	Correct	2 ms	560 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	3 ms	560 KB	Output is correct
12	Correct	2 ms	560 KB	Output is correct
13	Correct	3 ms	560 KB	Output is correct
14	Correct	2 ms	560 KB	Output is correct
15	Correct	2 ms	560 KB	Output is correct
16	Correct	2 ms	560 KB	Output is correct
17	Correct	3 ms	560 KB	Output is correct
18	Correct	2 ms	560 KB	Output is correct

Subtask #3
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	444 KB	Output is correct
4	Correct	3 ms	460 KB	Output is correct
5	Correct	2 ms	460 KB	Output is correct
6	Correct	2 ms	512 KB	Output is correct
7	Correct	2 ms	512 KB	Output is correct
8	Correct	2 ms	560 KB	Output is correct
9	Correct	2 ms	560 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	3 ms	560 KB	Output is correct
12	Correct	2 ms	560 KB	Output is correct
13	Correct	3 ms	560 KB	Output is correct
14	Correct	2 ms	560 KB	Output is correct
15	Correct	2 ms	560 KB	Output is correct
16	Correct	2 ms	560 KB	Output is correct
17	Correct	3 ms	560 KB	Output is correct
18	Correct	2 ms	560 KB	Output is correct
19	Correct	3 ms	620 KB	Output is correct
20	Correct	2 ms	620 KB	Output is correct
21	Correct	2 ms	620 KB	Output is correct
22	Correct	2 ms	620 KB	Output is correct
23	Correct	2 ms	620 KB	Output is correct
24	Correct	3 ms	620 KB	Output is correct
25	Correct	3 ms	624 KB	Output is correct
26	Correct	2 ms	624 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	85 ms	9988 KB	Output is correct
2	Correct	97 ms	9988 KB	Output is correct
3	Correct	79 ms	9988 KB	Output is correct
4	Correct	76 ms	9988 KB	Output is correct
5	Correct	90 ms	10780 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	10780 KB	Output is correct
2	Correct	23 ms	10780 KB	Output is correct
3	Correct	21 ms	10780 KB	Output is correct
4	Correct	27 ms	10780 KB	Output is correct
5	Correct	3 ms	10780 KB	Output is correct
6	Correct	21 ms	10780 KB	Output is correct
7	Correct	20 ms	10780 KB	Output is correct

Subtask #6
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	42 ms	10780 KB	Output is correct
2	Correct	38 ms	10780 KB	Output is correct
3	Correct	88 ms	10780 KB	Output is correct
4	Correct	85 ms	10804 KB	Output is correct
5	Correct	41 ms	10804 KB	Output is correct
6	Correct	70 ms	10804 KB	Output is correct
7	Correct	82 ms	10804 KB	Output is correct
8	Correct	38 ms	10804 KB	Output is correct

Subtask #7
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	444 KB	Output is correct
4	Correct	3 ms	460 KB	Output is correct
5	Correct	2 ms	460 KB	Output is correct
6	Correct	2 ms	512 KB	Output is correct
7	Correct	2 ms	512 KB	Output is correct
8	Correct	2 ms	560 KB	Output is correct
9	Correct	2 ms	560 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	3 ms	560 KB	Output is correct
12	Correct	2 ms	560 KB	Output is correct
13	Correct	3 ms	560 KB	Output is correct
14	Correct	2 ms	560 KB	Output is correct
15	Correct	2 ms	560 KB	Output is correct
16	Correct	2 ms	560 KB	Output is correct
17	Correct	3 ms	560 KB	Output is correct
18	Correct	2 ms	560 KB	Output is correct
19	Correct	3 ms	620 KB	Output is correct
20	Correct	2 ms	620 KB	Output is correct
21	Correct	2 ms	620 KB	Output is correct
22	Correct	2 ms	620 KB	Output is correct
23	Correct	2 ms	620 KB	Output is correct
24	Correct	3 ms	620 KB	Output is correct
25	Correct	3 ms	624 KB	Output is correct
26	Correct	2 ms	624 KB	Output is correct
27	Correct	85 ms	9988 KB	Output is correct
28	Correct	97 ms	9988 KB	Output is correct
29	Correct	79 ms	9988 KB	Output is correct
30	Correct	76 ms	9988 KB	Output is correct
31	Correct	90 ms	10780 KB	Output is correct
32	Correct	21 ms	10780 KB	Output is correct
33	Correct	23 ms	10780 KB	Output is correct
34	Correct	21 ms	10780 KB	Output is correct
35	Correct	27 ms	10780 KB	Output is correct
36	Correct	3 ms	10780 KB	Output is correct
37	Correct	21 ms	10780 KB	Output is correct
38	Correct	20 ms	10780 KB	Output is correct
39	Correct	42 ms	10780 KB	Output is correct
40	Correct	38 ms	10780 KB	Output is correct
41	Correct	88 ms	10780 KB	Output is correct
42	Correct	85 ms	10804 KB	Output is correct
43	Correct	41 ms	10804 KB	Output is correct
44	Correct	70 ms	10804 KB	Output is correct
45	Correct	82 ms	10804 KB	Output is correct
46	Correct	38 ms	10804 KB	Output is correct
47	Correct	45 ms	10804 KB	Output is correct
48	Correct	37 ms	10804 KB	Output is correct
49	Correct	76 ms	10804 KB	Output is correct
50	Correct	88 ms	10804 KB	Output is correct
51	Correct	74 ms	10804 KB	Output is correct
52	Correct	100 ms	10804 KB	Output is correct
53	Correct	82 ms	10804 KB	Output is correct
54	Correct	88 ms	10804 KB	Output is correct
55	Correct	72 ms	10804 KB	Output is correct

답안 #70181

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