oj.uz

Submission #260518

# Submission time Handle Problem Language Result Execution time Memory
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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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