#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef pair <ll, ll> pii;
typedef pair <long double, pii> muchie;
const ll NMAX = 300001;
const ll VMAX = 1000001;
const ll INF = (1LL << 59);
const ll MOD = 998244353;
const ll BLOCK = 318;
const ll base = 31;
const ll nr_of_bits = 21;
vector <pii> v[NMAX];
ll n, m;
multiset <ll> st[NMAX];
ll slope[NMAX];
ll schema[NMAX];
void shift(ll node, ll d) {
ll act = slope[node];
ll last = 0;
while(act > 0) {
auto it = st[node].rbegin();
last = *it;
st[node].erase(st[node].find(*it));
act--;
}
ll celalalt = *st[node].rbegin();
st[node].erase(st[node].find(celalalt));
st[node].insert(last + d);
st[node].insert(celalalt + d);
slope[node] = 1;
}
void merge(multiset <ll> &a, multiset <ll> &b) {
if(a.size() < b.size()) {
swap(a, b);
}
for(auto x : b) {
a.insert(x);
}
b.clear();
}
void DFS(ll node, ll p) {
if(v[node].size() == 1 && node != 1) {
st[node].insert(0);
st[node].insert(0);
slope[node] = 1;
return;
}
for(auto y : v[node]) {
ll x = y.first;
ll d = y.second;
if(x == p)
continue;
DFS(x, node);
shift(x, d);
slope[node] += slope[x];
schema[node] += schema[x];
merge(st[node], st[x]);
}
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
ll sum = 0;
ll i;
cin >> n >> m;
for(i = 2; i <= n + m; i++) {
ll p, l;
cin >> p >> l;
v[i].push_back({p, l});
v[p].push_back({i, l});
sum += 1LL * l;
}
DFS(1, 0);
ll last;
while(slope[1] > 0) {
auto it = st[1].rbegin();
last = *it;
st[1].erase(st[1].find(*it));
slope[1]--;
}
/// Acum cel din spate e primul cu slope 0
ll panta = 0;
vector <pii> v;
v.push_back({0, 0});
for(auto x : st[1]){
if(x == 0){
continue;
}
if(v.size() == 0 || v.back().first != x){
v.push_back({x, 1});
}else{
v.back().second++;
}
panta++;
}
for(ll i = 1; i < v.size(); i++){
sum -= 1LL * panta * 1LL * (v[i].first - v[i - 1].first);
panta -= v[i].second;
}
cout << sum;
return 0;
}
Compilation message
fireworks.cpp: In function 'int main()':
fireworks.cpp:110:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
110 | for(ll i = 1; i < v.size(); i++){
| ~~^~~~~~~~~~
fireworks.cpp:88:8: warning: variable 'last' set but not used [-Wunused-but-set-variable]
88 | ll last;
| ^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
12 ms |
21452 KB |
Output is correct |
2 |
Correct |
11 ms |
21400 KB |
Output is correct |
3 |
Correct |
12 ms |
21452 KB |
Output is correct |
4 |
Correct |
12 ms |
21424 KB |
Output is correct |
5 |
Correct |
12 ms |
21464 KB |
Output is correct |
6 |
Correct |
12 ms |
21472 KB |
Output is correct |
7 |
Correct |
13 ms |
21404 KB |
Output is correct |
8 |
Correct |
12 ms |
21460 KB |
Output is correct |
9 |
Correct |
12 ms |
21472 KB |
Output is correct |
10 |
Correct |
13 ms |
21452 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
12 ms |
21440 KB |
Output is correct |
2 |
Correct |
12 ms |
21452 KB |
Output is correct |
3 |
Correct |
12 ms |
21452 KB |
Output is correct |
4 |
Correct |
13 ms |
21428 KB |
Output is correct |
5 |
Correct |
12 ms |
21452 KB |
Output is correct |
6 |
Correct |
12 ms |
21452 KB |
Output is correct |
7 |
Correct |
13 ms |
21452 KB |
Output is correct |
8 |
Correct |
12 ms |
21388 KB |
Output is correct |
9 |
Correct |
12 ms |
21440 KB |
Output is correct |
10 |
Correct |
12 ms |
21404 KB |
Output is correct |
11 |
Correct |
13 ms |
21452 KB |
Output is correct |
12 |
Correct |
12 ms |
21400 KB |
Output is correct |
13 |
Correct |
12 ms |
21452 KB |
Output is correct |
14 |
Correct |
12 ms |
21468 KB |
Output is correct |
15 |
Correct |
12 ms |
21452 KB |
Output is correct |
16 |
Correct |
12 ms |
21452 KB |
Output is correct |
17 |
Correct |
13 ms |
21416 KB |
Output is correct |
18 |
Correct |
12 ms |
21484 KB |
Output is correct |
19 |
Correct |
12 ms |
21368 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
12 ms |
21452 KB |
Output is correct |
2 |
Correct |
11 ms |
21400 KB |
Output is correct |
3 |
Correct |
12 ms |
21452 KB |
Output is correct |
4 |
Correct |
12 ms |
21424 KB |
Output is correct |
5 |
Correct |
12 ms |
21464 KB |
Output is correct |
6 |
Correct |
12 ms |
21472 KB |
Output is correct |
7 |
Correct |
13 ms |
21404 KB |
Output is correct |
8 |
Correct |
12 ms |
21460 KB |
Output is correct |
9 |
Correct |
12 ms |
21472 KB |
Output is correct |
10 |
Correct |
13 ms |
21452 KB |
Output is correct |
11 |
Correct |
12 ms |
21440 KB |
Output is correct |
12 |
Correct |
12 ms |
21452 KB |
Output is correct |
13 |
Correct |
12 ms |
21452 KB |
Output is correct |
14 |
Correct |
13 ms |
21428 KB |
Output is correct |
15 |
Correct |
12 ms |
21452 KB |
Output is correct |
16 |
Correct |
12 ms |
21452 KB |
Output is correct |
17 |
Correct |
13 ms |
21452 KB |
Output is correct |
18 |
Correct |
12 ms |
21388 KB |
Output is correct |
19 |
Correct |
12 ms |
21440 KB |
Output is correct |
20 |
Correct |
12 ms |
21404 KB |
Output is correct |
21 |
Correct |
13 ms |
21452 KB |
Output is correct |
22 |
Correct |
12 ms |
21400 KB |
Output is correct |
23 |
Correct |
12 ms |
21452 KB |
Output is correct |
24 |
Correct |
12 ms |
21468 KB |
Output is correct |
25 |
Correct |
12 ms |
21452 KB |
Output is correct |
26 |
Correct |
12 ms |
21452 KB |
Output is correct |
27 |
Correct |
13 ms |
21416 KB |
Output is correct |
28 |
Correct |
12 ms |
21484 KB |
Output is correct |
29 |
Correct |
12 ms |
21368 KB |
Output is correct |
30 |
Correct |
13 ms |
21428 KB |
Output is correct |
31 |
Correct |
13 ms |
21464 KB |
Output is correct |
32 |
Correct |
12 ms |
21580 KB |
Output is correct |
33 |
Correct |
14 ms |
21676 KB |
Output is correct |
34 |
Correct |
14 ms |
21724 KB |
Output is correct |
35 |
Correct |
17 ms |
21840 KB |
Output is correct |
36 |
Correct |
16 ms |
21836 KB |
Output is correct |
37 |
Correct |
16 ms |
21948 KB |
Output is correct |
38 |
Correct |
16 ms |
21924 KB |
Output is correct |
39 |
Correct |
16 ms |
21964 KB |
Output is correct |
40 |
Correct |
15 ms |
22336 KB |
Output is correct |
41 |
Correct |
15 ms |
22348 KB |
Output is correct |
42 |
Correct |
15 ms |
21836 KB |
Output is correct |
43 |
Correct |
17 ms |
22284 KB |
Output is correct |
44 |
Correct |
16 ms |
22220 KB |
Output is correct |
45 |
Correct |
16 ms |
22116 KB |
Output is correct |
46 |
Correct |
17 ms |
22188 KB |
Output is correct |
47 |
Correct |
17 ms |
22092 KB |
Output is correct |
48 |
Correct |
16 ms |
22092 KB |
Output is correct |
49 |
Correct |
17 ms |
22108 KB |
Output is correct |
50 |
Correct |
15 ms |
22040 KB |
Output is correct |
51 |
Correct |
16 ms |
22092 KB |
Output is correct |
52 |
Correct |
17 ms |
22092 KB |
Output is correct |
53 |
Correct |
17 ms |
22104 KB |
Output is correct |
54 |
Correct |
17 ms |
22340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
12 ms |
21452 KB |
Output is correct |
2 |
Correct |
11 ms |
21400 KB |
Output is correct |
3 |
Correct |
12 ms |
21452 KB |
Output is correct |
4 |
Correct |
12 ms |
21424 KB |
Output is correct |
5 |
Correct |
12 ms |
21464 KB |
Output is correct |
6 |
Correct |
12 ms |
21472 KB |
Output is correct |
7 |
Correct |
13 ms |
21404 KB |
Output is correct |
8 |
Correct |
12 ms |
21460 KB |
Output is correct |
9 |
Correct |
12 ms |
21472 KB |
Output is correct |
10 |
Correct |
13 ms |
21452 KB |
Output is correct |
11 |
Correct |
12 ms |
21440 KB |
Output is correct |
12 |
Correct |
12 ms |
21452 KB |
Output is correct |
13 |
Correct |
12 ms |
21452 KB |
Output is correct |
14 |
Correct |
13 ms |
21428 KB |
Output is correct |
15 |
Correct |
12 ms |
21452 KB |
Output is correct |
16 |
Correct |
12 ms |
21452 KB |
Output is correct |
17 |
Correct |
13 ms |
21452 KB |
Output is correct |
18 |
Correct |
12 ms |
21388 KB |
Output is correct |
19 |
Correct |
12 ms |
21440 KB |
Output is correct |
20 |
Correct |
12 ms |
21404 KB |
Output is correct |
21 |
Correct |
13 ms |
21452 KB |
Output is correct |
22 |
Correct |
12 ms |
21400 KB |
Output is correct |
23 |
Correct |
12 ms |
21452 KB |
Output is correct |
24 |
Correct |
12 ms |
21468 KB |
Output is correct |
25 |
Correct |
12 ms |
21452 KB |
Output is correct |
26 |
Correct |
12 ms |
21452 KB |
Output is correct |
27 |
Correct |
13 ms |
21416 KB |
Output is correct |
28 |
Correct |
12 ms |
21484 KB |
Output is correct |
29 |
Correct |
12 ms |
21368 KB |
Output is correct |
30 |
Correct |
13 ms |
21428 KB |
Output is correct |
31 |
Correct |
13 ms |
21464 KB |
Output is correct |
32 |
Correct |
12 ms |
21580 KB |
Output is correct |
33 |
Correct |
14 ms |
21676 KB |
Output is correct |
34 |
Correct |
14 ms |
21724 KB |
Output is correct |
35 |
Correct |
17 ms |
21840 KB |
Output is correct |
36 |
Correct |
16 ms |
21836 KB |
Output is correct |
37 |
Correct |
16 ms |
21948 KB |
Output is correct |
38 |
Correct |
16 ms |
21924 KB |
Output is correct |
39 |
Correct |
16 ms |
21964 KB |
Output is correct |
40 |
Correct |
15 ms |
22336 KB |
Output is correct |
41 |
Correct |
15 ms |
22348 KB |
Output is correct |
42 |
Correct |
15 ms |
21836 KB |
Output is correct |
43 |
Correct |
17 ms |
22284 KB |
Output is correct |
44 |
Correct |
16 ms |
22220 KB |
Output is correct |
45 |
Correct |
16 ms |
22116 KB |
Output is correct |
46 |
Correct |
17 ms |
22188 KB |
Output is correct |
47 |
Correct |
17 ms |
22092 KB |
Output is correct |
48 |
Correct |
16 ms |
22092 KB |
Output is correct |
49 |
Correct |
17 ms |
22108 KB |
Output is correct |
50 |
Correct |
15 ms |
22040 KB |
Output is correct |
51 |
Correct |
16 ms |
22092 KB |
Output is correct |
52 |
Correct |
17 ms |
22092 KB |
Output is correct |
53 |
Correct |
17 ms |
22104 KB |
Output is correct |
54 |
Correct |
17 ms |
22340 KB |
Output is correct |
55 |
Correct |
22 ms |
22852 KB |
Output is correct |
56 |
Correct |
56 ms |
26528 KB |
Output is correct |
57 |
Correct |
98 ms |
30288 KB |
Output is correct |
58 |
Correct |
129 ms |
32776 KB |
Output is correct |
59 |
Correct |
177 ms |
37036 KB |
Output is correct |
60 |
Correct |
283 ms |
40152 KB |
Output is correct |
61 |
Correct |
250 ms |
42816 KB |
Output is correct |
62 |
Correct |
290 ms |
45580 KB |
Output is correct |
63 |
Correct |
369 ms |
49560 KB |
Output is correct |
64 |
Correct |
374 ms |
51336 KB |
Output is correct |
65 |
Correct |
175 ms |
77892 KB |
Output is correct |
66 |
Correct |
171 ms |
78004 KB |
Output is correct |
67 |
Correct |
183 ms |
45248 KB |
Output is correct |
68 |
Correct |
301 ms |
71812 KB |
Output is correct |
69 |
Correct |
375 ms |
69172 KB |
Output is correct |
70 |
Correct |
392 ms |
69096 KB |
Output is correct |
71 |
Correct |
379 ms |
62656 KB |
Output is correct |
72 |
Correct |
388 ms |
62848 KB |
Output is correct |
73 |
Correct |
377 ms |
61456 KB |
Output is correct |
74 |
Correct |
379 ms |
61572 KB |
Output is correct |
75 |
Correct |
409 ms |
60476 KB |
Output is correct |
76 |
Correct |
447 ms |
60600 KB |
Output is correct |
77 |
Correct |
438 ms |
59920 KB |
Output is correct |
78 |
Correct |
453 ms |
60796 KB |
Output is correct |
79 |
Correct |
511 ms |
75908 KB |
Output is correct |