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Submission #1017377

# Submission time Handle Problem Language Result Execution time Memory
1017377 2024-07-09T07:39:37 Z vjudge1 Fireworks (APIO16_fireworks) C++17
100 / 100
 238 ms 24588 KB 
#include <stdio.h>
const int _(300001);
int d[_], f[_], w[_], r[_];
struct node { int d, lc, rc; long long v; } t[_ << 2];
void swap(int &x, int &y) { x ^= y ^= x ^= y;}
int merge(int x, int y)
{
    if (!x || !y) return x | y;
    if (t[x].v < t[y].v) swap(x, y);
    t[x].rc = merge(t[x].rc, y);
    if (t[t[x].lc].d < t[t[x].rc].d) swap(t[x].lc, t[x].rc);
    t[x].d = t[t[x].rc].d + 1;
    return x;
}
int pop(const int x) { return merge(t[x].lc, t[x].rc); }
int main()
{
    int n, m; scanf("%d%d", &n, &m); long long s(0);
    for (int i(2); i <= n + m; ++i) scanf("%d%d", &f[i], &w[i]), ++d[f[i]], s += w[i];
    for (int i(n + m), j(0); i > 1; --i)
    {
        long long L(0), R(0);
        if (i <= n)
        {
            while (--d[i]) r[i] = pop(r[i]);
            R = t[r[i]].v; r[i] = pop(r[i]);
            L = t[r[i]].v; r[i] = pop(r[i]);
        }
        t[++j].v = L + w[i]; t[++j].v = R + w[i];
        r[i] = merge(r[i], merge(j - 1, j));
        r[f[i]] = merge(r[f[i]], r[i]);
    }
    while (d[1]--) r[1] = pop(r[1]);
    while (r[1]) s -= t[r[1]].v, r[1] = pop(r[1]);
    return !printf("%lld\n", s);
}

Compilation message

fireworks.cpp: In function 'int main()':
fireworks.cpp:18:20: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     int n, m; scanf("%d%d", &n, &m); long long s(0);
      |               ~~~~~^~~~~~~~~~~~~~~~
fireworks.cpp:19:42: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |     for (int i(2); i <= n + m; ++i) scanf("%d%d", &f[i], &w[i]), ++d[f[i]], s += w[i];
      |                                     ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 428 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 428 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 2392 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 2392 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 2484 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 1 ms 2652 KB Output is correct
37 Correct 1 ms 780 KB Output is correct
38 Correct 2 ms 600 KB Output is correct
39 Correct 2 ms 604 KB Output is correct
40 Correct 1 ms 692 KB Output is correct
41 Correct 1 ms 604 KB Output is correct
42 Correct 1 ms 604 KB Output is correct
43 Correct 2 ms 604 KB Output is correct
44 Correct 2 ms 604 KB Output is correct
45 Correct 1 ms 604 KB Output is correct
46 Correct 2 ms 604 KB Output is correct
47 Correct 2 ms 860 KB Output is correct
48 Correct 2 ms 2648 KB Output is correct
49 Correct 3 ms 2820 KB Output is correct
50 Correct 3 ms 604 KB Output is correct
51 Correct 2 ms 604 KB Output is correct
52 Correct 2 ms 600 KB Output is correct
53 Correct 2 ms 604 KB Output is correct
54 Correct 2 ms 604 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 428 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 2392 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 2392 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 2484 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 1 ms 2652 KB Output is correct
37 Correct 1 ms 780 KB Output is correct
38 Correct 2 ms 600 KB Output is correct
39 Correct 2 ms 604 KB Output is correct
40 Correct 1 ms 692 KB Output is correct
41 Correct 1 ms 604 KB Output is correct
42 Correct 1 ms 604 KB Output is correct
43 Correct 2 ms 604 KB Output is correct
44 Correct 2 ms 604 KB Output is correct
45 Correct 1 ms 604 KB Output is correct
46 Correct 2 ms 604 KB Output is correct
47 Correct 2 ms 860 KB Output is correct
48 Correct 2 ms 2648 KB Output is correct
49 Correct 3 ms 2820 KB Output is correct
50 Correct 3 ms 604 KB Output is correct
51 Correct 2 ms 604 KB Output is correct
52 Correct 2 ms 600 KB Output is correct
53 Correct 2 ms 604 KB Output is correct
54 Correct 2 ms 604 KB Output is correct
55 Correct 3 ms 1372 KB Output is correct
56 Correct 16 ms 3996 KB Output is correct
57 Correct 22 ms 6876 KB Output is correct
58 Correct 34 ms 9720 KB Output is correct
59 Correct 37 ms 13384 KB Output is correct
60 Correct 74 ms 15184 KB Output is correct
61 Correct 53 ms 17100 KB Output is correct
62 Correct 64 ms 18256 KB Output is correct
63 Correct 79 ms 20816 KB Output is correct
64 Correct 85 ms 21840 KB Output is correct
65 Correct 46 ms 23120 KB Output is correct
66 Correct 56 ms 24588 KB Output is correct
67 Correct 58 ms 23380 KB Output is correct
68 Correct 87 ms 22356 KB Output is correct
69 Correct 87 ms 22564 KB Output is correct
70 Correct 89 ms 22608 KB Output is correct
71 Correct 147 ms 22108 KB Output is correct
72 Correct 143 ms 21804 KB Output is correct
73 Correct 185 ms 21844 KB Output is correct
74 Correct 190 ms 21508 KB Output is correct
75 Correct 185 ms 21152 KB Output is correct
76 Correct 184 ms 21840 KB Output is correct
77 Correct 187 ms 21596 KB Output is correct
78 Correct 189 ms 21528 KB Output is correct
79 Correct 238 ms 21484 KB Output is correct