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Submission #70179

# Submission time Handle Problem Language Result Execution time Memory
70179 2018-08-22T13:02:37 Z model_code Global Warming (CEOI18_glo) C++17
100 / 100
 106 ms 2668 KB 
// Patryk Czajka

#include <cstdio>
#include <cassert>

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

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

int t[maxN];
int dp[maxN];
int res_part[maxN];
int dp_i;

void reset() {
    dp_i = 0;
}

int add(int x) {
    int a = -1, b = dp_i, avg;
    while(b - a > 1) {
        avg = (a + b) / 2;
        if(dp[avg] < x) a = avg;
        else b = avg;
    }
    dp[b] = x;
    dp_i = max(dp_i, b + 1);
    return b + 1;
}


void check(int i) {
    int a = -1, b = dp_i, avg;
    while(b - a > 1) {
        avg = (a + b) / 2;
        if(dp[avg] < X - t[i]) a = avg;
        else b = avg;
    }
    res = max(res_part[i] + b, res);
}


int main() {
    int ans;
    ans = scanf("%d%d", &n, &X);
    assert(ans >= 0);
    for(int i = 0; i < n; ++i) {
        ans = scanf("%d", t + i);
        assert(ans >= 0);
        res_part[i] = add(t[i]);
    }

    reset();
    for(int i = n - 1; i >= 0; --i) {
        check(i);
        add(-t[i]);
    }
    printf("%d\n", res);
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 444 KB Output is correct
4 Correct 2 ms 444 KB Output is correct
5 Correct 2 ms 444 KB Output is correct
6 Correct 3 ms 444 KB Output is correct
7 Correct 2 ms 496 KB Output is correct
8 Correct 2 ms 496 KB Output is correct
9 Correct 3 ms 548 KB Output is correct
10 Correct 3 ms 548 KB Output is correct
11 Correct 2 ms 548 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 444 KB Output is correct
4 Correct 2 ms 444 KB Output is correct
5 Correct 2 ms 444 KB Output is correct
6 Correct 3 ms 444 KB Output is correct
7 Correct 2 ms 496 KB Output is correct
8 Correct 2 ms 496 KB Output is correct
9 Correct 3 ms 548 KB Output is correct
10 Correct 3 ms 548 KB Output is correct
11 Correct 2 ms 548 KB Output is correct
12 Correct 2 ms 548 KB Output is correct
13 Correct 2 ms 548 KB Output is correct
14 Correct 2 ms 548 KB Output is correct
15 Correct 2 ms 548 KB Output is correct
16 Correct 2 ms 548 KB Output is correct
17 Correct 3 ms 604 KB Output is correct
18 Correct 2 ms 604 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 444 KB Output is correct
4 Correct 2 ms 444 KB Output is correct
5 Correct 2 ms 444 KB Output is correct
6 Correct 3 ms 444 KB Output is correct
7 Correct 2 ms 496 KB Output is correct
8 Correct 2 ms 496 KB Output is correct
9 Correct 3 ms 548 KB Output is correct
10 Correct 3 ms 548 KB Output is correct
11 Correct 2 ms 548 KB Output is correct
12 Correct 2 ms 548 KB Output is correct
13 Correct 2 ms 548 KB Output is correct
14 Correct 2 ms 548 KB Output is correct
15 Correct 2 ms 548 KB Output is correct
16 Correct 2 ms 548 KB Output is correct
17 Correct 3 ms 604 KB Output is correct
18 Correct 2 ms 604 KB Output is correct
19 Correct 3 ms 604 KB Output is correct
20 Correct 2 ms 604 KB Output is correct
21 Correct 2 ms 604 KB Output is correct
22 Correct 3 ms 604 KB Output is correct
23 Correct 3 ms 620 KB Output is correct
24 Correct 2 ms 620 KB Output is correct
25 Correct 3 ms 620 KB Output is correct
26 Correct 2 ms 620 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 2156 KB Output is correct
2 Correct 75 ms 2284 KB Output is correct
3 Correct 85 ms 2284 KB Output is correct
4 Correct 84 ms 2284 KB Output is correct
5 Correct 87 ms 2540 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 2540 KB Output is correct
2 Correct 22 ms 2540 KB Output is correct
3 Correct 19 ms 2540 KB Output is correct
4 Correct 21 ms 2540 KB Output is correct
5 Correct 2 ms 2540 KB Output is correct
6 Correct 22 ms 2540 KB Output is correct
7 Correct 18 ms 2540 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 2540 KB Output is correct
2 Correct 40 ms 2540 KB Output is correct
3 Correct 82 ms 2540 KB Output is correct
4 Correct 105 ms 2540 KB Output is correct
5 Correct 43 ms 2540 KB Output is correct
6 Correct 94 ms 2540 KB Output is correct
7 Correct 105 ms 2540 KB Output is correct
8 Correct 36 ms 2540 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 444 KB Output is correct
4 Correct 2 ms 444 KB Output is correct
5 Correct 2 ms 444 KB Output is correct
6 Correct 3 ms 444 KB Output is correct
7 Correct 2 ms 496 KB Output is correct
8 Correct 2 ms 496 KB Output is correct
9 Correct 3 ms 548 KB Output is correct
10 Correct 3 ms 548 KB Output is correct
11 Correct 2 ms 548 KB Output is correct
12 Correct 2 ms 548 KB Output is correct
13 Correct 2 ms 548 KB Output is correct
14 Correct 2 ms 548 KB Output is correct
15 Correct 2 ms 548 KB Output is correct
16 Correct 2 ms 548 KB Output is correct
17 Correct 3 ms 604 KB Output is correct
18 Correct 2 ms 604 KB Output is correct
19 Correct 3 ms 604 KB Output is correct
20 Correct 2 ms 604 KB Output is correct
21 Correct 2 ms 604 KB Output is correct
22 Correct 3 ms 604 KB Output is correct
23 Correct 3 ms 620 KB Output is correct
24 Correct 2 ms 620 KB Output is correct
25 Correct 3 ms 620 KB Output is correct
26 Correct 2 ms 620 KB Output is correct
27 Correct 76 ms 2156 KB Output is correct
28 Correct 75 ms 2284 KB Output is correct
29 Correct 85 ms 2284 KB Output is correct
30 Correct 84 ms 2284 KB Output is correct
31 Correct 87 ms 2540 KB Output is correct
32 Correct 18 ms 2540 KB Output is correct
33 Correct 22 ms 2540 KB Output is correct
34 Correct 19 ms 2540 KB Output is correct
35 Correct 21 ms 2540 KB Output is correct
36 Correct 2 ms 2540 KB Output is correct
37 Correct 22 ms 2540 KB Output is correct
38 Correct 18 ms 2540 KB Output is correct
39 Correct 41 ms 2540 KB Output is correct
40 Correct 40 ms 2540 KB Output is correct
41 Correct 82 ms 2540 KB Output is correct
42 Correct 105 ms 2540 KB Output is correct
43 Correct 43 ms 2540 KB Output is correct
44 Correct 94 ms 2540 KB Output is correct
45 Correct 105 ms 2540 KB Output is correct
46 Correct 36 ms 2540 KB Output is correct
47 Correct 38 ms 2540 KB Output is correct
48 Correct 40 ms 2540 KB Output is correct
49 Correct 80 ms 2540 KB Output is correct
50 Correct 106 ms 2616 KB Output is correct
51 Correct 65 ms 2616 KB Output is correct
52 Correct 91 ms 2616 KB Output is correct
53 Correct 104 ms 2616 KB Output is correct
54 Correct 86 ms 2668 KB Output is correct
55 Correct 94 ms 2668 KB Output is correct