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Submission #114075

# Submission time Handle Problem Language Result Execution time Memory
114075 2019-05-29T21:36:42 Z keko37 Fireworks (APIO16_fireworks) C++14
100 / 100
 345 ms 68600 KB 
#include<bits/stdc++.h>

using namespace std;

typedef long long llint;

const int MAXN = 300005;
const llint INF = 1000000000000000LL;

int n, m;
llint p[MAXN], c[MAXN];
llint a[MAXN], b[MAXN];
vector <int> v[MAXN];
priority_queue <llint> hull[MAXN];

void add (int x, int len) {
    int slope = a[x] + hull[x].size();
    llint x1, x2;
    while (slope >= 0) {
        if (slope == 1) x2 = hull[x].top();
        if (slope == 0) x1 = hull[x].top();
        hull[x].pop(); slope--;
    }
    b[x] += len;
    hull[x].push(x1 + len);
    hull[x].push(x2 + len);
}

void spoji (int x, int y) {
    if (hull[x].size() > hull[y].size()) swap(hull[x], hull[y]);
    a[y] += a[x];
    b[y] += b[x];
    while (!hull[x].empty()) {
        hull[y].push(hull[x].top());
        hull[x].pop();
    }
}

void dfs (int x) {
    if (x >= n + 1) {
        a[x] = -1; b[x] = 0;
        hull[x].push(0);
        hull[x].push(0);
        return;
    }
    for (int i=0; i<v[x].size(); i++) {
        int sus = v[x][i];
        dfs(sus);
        add(sus, c[sus]);
        spoji(sus, x);
    }
}

llint upit (int x) {
    vector <llint> r;
    while (!hull[x].empty()) {
        r.push_back(hull[x].top());
        hull[x].pop();
    }
    llint val = b[x], slope = a[x], pos = 0;
    llint sol = val;
    while (!r.empty()) {
        val += slope * (r.back() - pos);
        sol = min(sol, val);
        pos = r.back();
        r.pop_back();
        slope++;
    }
    return sol;
}

int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> m;
    for (int i = 2; i <= n+m; i++) {
        cin >> p[i] >> c[i];
        v[p[i]].push_back(i);
    }
    dfs(1);
    cout << upit(1);
    return 0;
}

Compilation message

fireworks.cpp: In function 'void dfs(int)':
fireworks.cpp:46:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0; i<v[x].size(); i++) {
                   ~^~~~~~~~~~~~
fireworks.cpp: In function 'void add(int, int)':
fireworks.cpp:26:21: warning: 'x2' may be used uninitialized in this function [-Wmaybe-uninitialized]
     hull[x].push(x2 + len);
                  ~~~^~~~~
fireworks.cpp:25:21: warning: 'x1' may be used uninitialized in this function [-Wmaybe-uninitialized]
     hull[x].push(x1 + len);
                  ~~~^~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 16768 KB Output is correct
2 Correct 15 ms 16768 KB Output is correct
3 Correct 16 ms 17016 KB Output is correct
4 Correct 15 ms 16768 KB Output is correct
5 Correct 15 ms 16888 KB Output is correct
6 Correct 16 ms 16768 KB Output is correct
7 Correct 15 ms 16768 KB Output is correct
8 Correct 15 ms 16768 KB Output is correct
9 Correct 16 ms 16768 KB Output is correct
10 Correct 16 ms 16768 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 16896 KB Output is correct
2 Correct 15 ms 16768 KB Output is correct
3 Correct 15 ms 16768 KB Output is correct
4 Correct 16 ms 16896 KB Output is correct
5 Correct 15 ms 16768 KB Output is correct
6 Correct 15 ms 16768 KB Output is correct
7 Correct 15 ms 16768 KB Output is correct
8 Correct 15 ms 16768 KB Output is correct
9 Correct 16 ms 16768 KB Output is correct
10 Correct 15 ms 16896 KB Output is correct
11 Correct 15 ms 16868 KB Output is correct
12 Correct 16 ms 16896 KB Output is correct
13 Correct 15 ms 16768 KB Output is correct
14 Correct 15 ms 16768 KB Output is correct
15 Correct 17 ms 16896 KB Output is correct
16 Correct 17 ms 17024 KB Output is correct
17 Correct 15 ms 16896 KB Output is correct
18 Correct 17 ms 16896 KB Output is correct
19 Correct 15 ms 16896 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 16768 KB Output is correct
2 Correct 15 ms 16768 KB Output is correct
3 Correct 16 ms 17016 KB Output is correct
4 Correct 15 ms 16768 KB Output is correct
5 Correct 15 ms 16888 KB Output is correct
6 Correct 16 ms 16768 KB Output is correct
7 Correct 15 ms 16768 KB Output is correct
8 Correct 15 ms 16768 KB Output is correct
9 Correct 16 ms 16768 KB Output is correct
10 Correct 16 ms 16768 KB Output is correct
11 Correct 16 ms 16896 KB Output is correct
12 Correct 15 ms 16768 KB Output is correct
13 Correct 15 ms 16768 KB Output is correct
14 Correct 16 ms 16896 KB Output is correct
15 Correct 15 ms 16768 KB Output is correct
16 Correct 15 ms 16768 KB Output is correct
17 Correct 15 ms 16768 KB Output is correct
18 Correct 15 ms 16768 KB Output is correct
19 Correct 16 ms 16768 KB Output is correct
20 Correct 15 ms 16896 KB Output is correct
21 Correct 15 ms 16868 KB Output is correct
22 Correct 16 ms 16896 KB Output is correct
23 Correct 15 ms 16768 KB Output is correct
24 Correct 15 ms 16768 KB Output is correct
25 Correct 17 ms 16896 KB Output is correct
26 Correct 17 ms 17024 KB Output is correct
27 Correct 15 ms 16896 KB Output is correct
28 Correct 17 ms 16896 KB Output is correct
29 Correct 15 ms 16896 KB Output is correct
30 Correct 15 ms 16768 KB Output is correct
31 Correct 15 ms 16896 KB Output is correct
32 Correct 17 ms 16896 KB Output is correct
33 Correct 18 ms 17024 KB Output is correct
34 Correct 18 ms 17024 KB Output is correct
35 Correct 18 ms 17124 KB Output is correct
36 Correct 18 ms 17152 KB Output is correct
37 Correct 18 ms 17280 KB Output is correct
38 Correct 19 ms 17280 KB Output is correct
39 Correct 19 ms 17256 KB Output is correct
40 Correct 19 ms 17664 KB Output is correct
41 Correct 18 ms 17664 KB Output is correct
42 Correct 17 ms 17152 KB Output is correct
43 Correct 20 ms 17436 KB Output is correct
44 Correct 20 ms 17408 KB Output is correct
45 Correct 19 ms 17408 KB Output is correct
46 Correct 19 ms 17528 KB Output is correct
47 Correct 19 ms 17408 KB Output is correct
48 Correct 19 ms 17408 KB Output is correct
49 Correct 20 ms 17472 KB Output is correct
50 Correct 19 ms 17280 KB Output is correct
51 Correct 18 ms 17280 KB Output is correct
52 Correct 18 ms 17408 KB Output is correct
53 Correct 20 ms 17408 KB Output is correct
54 Correct 19 ms 17504 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 16768 KB Output is correct
2 Correct 15 ms 16768 KB Output is correct
3 Correct 16 ms 17016 KB Output is correct
4 Correct 15 ms 16768 KB Output is correct
5 Correct 15 ms 16888 KB Output is correct
6 Correct 16 ms 16768 KB Output is correct
7 Correct 15 ms 16768 KB Output is correct
8 Correct 15 ms 16768 KB Output is correct
9 Correct 16 ms 16768 KB Output is correct
10 Correct 16 ms 16768 KB Output is correct
11 Correct 16 ms 16896 KB Output is correct
12 Correct 15 ms 16768 KB Output is correct
13 Correct 15 ms 16768 KB Output is correct
14 Correct 16 ms 16896 KB Output is correct
15 Correct 15 ms 16768 KB Output is correct
16 Correct 15 ms 16768 KB Output is correct
17 Correct 15 ms 16768 KB Output is correct
18 Correct 15 ms 16768 KB Output is correct
19 Correct 16 ms 16768 KB Output is correct
20 Correct 15 ms 16896 KB Output is correct
21 Correct 15 ms 16868 KB Output is correct
22 Correct 16 ms 16896 KB Output is correct
23 Correct 15 ms 16768 KB Output is correct
24 Correct 15 ms 16768 KB Output is correct
25 Correct 17 ms 16896 KB Output is correct
26 Correct 17 ms 17024 KB Output is correct
27 Correct 15 ms 16896 KB Output is correct
28 Correct 17 ms 16896 KB Output is correct
29 Correct 15 ms 16896 KB Output is correct
30 Correct 15 ms 16768 KB Output is correct
31 Correct 15 ms 16896 KB Output is correct
32 Correct 17 ms 16896 KB Output is correct
33 Correct 18 ms 17024 KB Output is correct
34 Correct 18 ms 17024 KB Output is correct
35 Correct 18 ms 17124 KB Output is correct
36 Correct 18 ms 17152 KB Output is correct
37 Correct 18 ms 17280 KB Output is correct
38 Correct 19 ms 17280 KB Output is correct
39 Correct 19 ms 17256 KB Output is correct
40 Correct 19 ms 17664 KB Output is correct
41 Correct 18 ms 17664 KB Output is correct
42 Correct 17 ms 17152 KB Output is correct
43 Correct 20 ms 17436 KB Output is correct
44 Correct 20 ms 17408 KB Output is correct
45 Correct 19 ms 17408 KB Output is correct
46 Correct 19 ms 17528 KB Output is correct
47 Correct 19 ms 17408 KB Output is correct
48 Correct 19 ms 17408 KB Output is correct
49 Correct 20 ms 17472 KB Output is correct
50 Correct 19 ms 17280 KB Output is correct
51 Correct 18 ms 17280 KB Output is correct
52 Correct 18 ms 17408 KB Output is correct
53 Correct 20 ms 17408 KB Output is correct
54 Correct 19 ms 17504 KB Output is correct
55 Correct 25 ms 18048 KB Output is correct
56 Correct 55 ms 21748 KB Output is correct
57 Correct 90 ms 25028 KB Output is correct
58 Correct 108 ms 27632 KB Output is correct
59 Correct 151 ms 30960 KB Output is correct
60 Correct 185 ms 34288 KB Output is correct
61 Correct 231 ms 37580 KB Output is correct
62 Correct 258 ms 39372 KB Output is correct
63 Correct 318 ms 43628 KB Output is correct
64 Correct 345 ms 44904 KB Output is correct
65 Correct 138 ms 68600 KB Output is correct
66 Correct 133 ms 68600 KB Output is correct
67 Correct 180 ms 40532 KB Output is correct
68 Correct 205 ms 58720 KB Output is correct
69 Correct 266 ms 56264 KB Output is correct
70 Correct 280 ms 56560 KB Output is correct
71 Correct 253 ms 59232 KB Output is correct
72 Correct 255 ms 59072 KB Output is correct
73 Correct 239 ms 55668 KB Output is correct
74 Correct 231 ms 55772 KB Output is correct
75 Correct 225 ms 54492 KB Output is correct
76 Correct 230 ms 54600 KB Output is correct
77 Correct 226 ms 53344 KB Output is correct
78 Correct 226 ms 52196 KB Output is correct
79 Correct 231 ms 57372 KB Output is correct