| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 697218 |
2023-02-08T23:33:15 Z |
allllekssssa |
Bomb (IZhO17_bomb) |
C++14 |
|
73 ms |
131072 KB |
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define pii pair<int, int>
const int maxN = 1e6 + 10;
pii d[maxN];
long long ans;
long long ways = 1;
int n;
vector<int> v[maxN];
void dfs1(int x, int pred) {
d[x] = {0, 1};
for (int i: v[x]) {
if (i != pred) {
dfs1(i, x);
if (d[i].first + 1 > d[x].first) {
d[x] = {d[i].first + 1, d[i].second};
} else {
if (d[i].first + 1 == d[x].first) {
d[x].second+=d[i].second;
}
}
}
}
}
void dfs2(int x, int pred, pii bestUp) {
vector<pii> choices;
choices.pb(bestUp);
for (int i: v[x]) {
if (i != pred) {
choices.pb(d[i]);
}
}
sort(choices.begin(), choices.end());
reverse(choices.begin(), choices.end());
if (choices.size() > 2) {
long long maxProduct = 1ll * (choices[0].first + 1) * (choices[1].first + choices[2].first + 2);
if (maxProduct >= ans) {
if (maxProduct == 4) cout << x << endl;
long long pathCount = 0;
if (choices[1].first == choices[2].first) {
long long total = 0;
long long removeSum = 0;
for (auto i: choices) {
if (choices[1].first == i.first) {
total+=i.second;
removeSum+= 1ll * i.second * i.second;
}
}
pathCount = total * total - removeSum;
pathCount/=2;
} else {
if (choices[0].first == choices[1].first) {
long long total = 0;
for (auto i: choices) {
if (choices[2].first == i.first) {
total+=i.second;
}
}
pathCount = total * (choices[0].second + choices[1].second);
} else {
long long total = 0;
for (auto i: choices) {
if (choices[2].first == i.first) {
total+=i.second;
}
}
pathCount = total * choices[1].second;
}
}
if (maxProduct == ans) ways+=pathCount; else {
ans = maxProduct;
ways = pathCount;
}
}
}
// leaf
if (v[x].size() == 1 && pred) {
return;
}
int len = choices[0].first;
int nacini = 0;
int drugiNacini = 0;
for (auto i: choices) {
if (i.first == len) nacini+=i.second;
if (i.first == choices[1].first) drugiNacini+=i.second;
}
for (int i: v[x]) {
if (i != pred) {
if (d[i].first == len) {
if (nacini - d[i].second != 0) {
dfs2(i, x, {len + 1, nacini - d[i].second});
} else {
dfs2(i, x, {choices[1].first + 1, drugiNacini});
}
} else {
dfs2(i, x, {len + 1, nacini});
}
}
}
}
int main() {
cin >> n;
for (int i = 1; i<n; i++) {
int x, y;
scanf("%d%d", &x, &y);
v[x].pb(y);
v[y].pb(x);
}
dfs1(1, 0);
dfs2(1, 0, {-1, 1});
cout << ans << " " << ways << endl;
return 0;
}
Compilation message
bomb.cpp: In function 'int main()':
bomb.cpp:139:11: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
139 | scanf("%d%d", &x, &y);
| ~~~~~^~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
23792 KB |
Output isn't correct |
| 2 |
Runtime error |
67 ms |
131072 KB |
Execution killed with signal 9 |
| 3 |
Incorrect |
73 ms |
23928 KB |
Output isn't correct |
| 4 |
Incorrect |
69 ms |
23924 KB |
Output isn't correct |
| 5 |
Incorrect |
12 ms |
23764 KB |
Output isn't correct |
| 6 |
Incorrect |
12 ms |
23764 KB |
Output isn't correct |
| 7 |
Incorrect |
12 ms |
23792 KB |
Output isn't correct |
| 8 |
Runtime error |
31 ms |
47944 KB |
Execution killed with signal 11 |
| 9 |
Runtime error |
29 ms |
47960 KB |
Execution killed with signal 11 |
| 10 |
Runtime error |
30 ms |
47972 KB |
Execution killed with signal 11 |
| 11 |
Runtime error |
33 ms |
47924 KB |
Execution killed with signal 11 |
| 12 |
Runtime error |
39 ms |
47948 KB |
Execution killed with signal 11 |
| 13 |
Runtime error |
35 ms |
47960 KB |
Execution killed with signal 11 |
| 14 |
Runtime error |
33 ms |
47908 KB |
Execution killed with signal 11 |
| 15 |
Runtime error |
34 ms |
47948 KB |
Execution killed with signal 11 |
| 16 |
Runtime error |
31 ms |
47964 KB |
Execution killed with signal 11 |
| 17 |
Incorrect |
13 ms |
23792 KB |
Output isn't correct |
| 18 |
Incorrect |
15 ms |
23800 KB |
Output isn't correct |
| 19 |
Incorrect |
13 ms |
23752 KB |
Output isn't correct |
| 20 |
Incorrect |
13 ms |
23800 KB |
Output isn't correct |
| 21 |
Incorrect |
13 ms |
23764 KB |
Output isn't correct |
| 22 |
Incorrect |
12 ms |
23764 KB |
Output isn't correct |
| 23 |
Incorrect |
14 ms |
23800 KB |
Output isn't correct |
| 24 |
Incorrect |
14 ms |
23792 KB |
Output isn't correct |
| 25 |
Incorrect |
16 ms |
23868 KB |
Output isn't correct |
| 26 |
Incorrect |
13 ms |
23764 KB |
Output isn't correct |
| 27 |
Incorrect |
14 ms |
23796 KB |
Output isn't correct |
| 28 |
Incorrect |
14 ms |
23804 KB |
Output isn't correct |
| 29 |
Incorrect |
16 ms |
23796 KB |
Output isn't correct |
| 30 |
Incorrect |
16 ms |
24000 KB |
Output isn't correct |
| 31 |
Incorrect |
15 ms |
23892 KB |
Output isn't correct |
| 32 |
Incorrect |
16 ms |
23868 KB |
Output isn't correct |
| 33 |
Incorrect |
15 ms |
23956 KB |
Output isn't correct |
| 34 |
Incorrect |
16 ms |
23856 KB |
Output isn't correct |
| 35 |
Incorrect |
18 ms |
23988 KB |
Output isn't correct |
| 36 |
Incorrect |
16 ms |
23928 KB |
Output isn't correct |
| 37 |
Runtime error |
34 ms |
47964 KB |
Execution killed with signal 11 |
| 38 |
Incorrect |
48 ms |
24932 KB |
Output isn't correct |
| 39 |
Runtime error |
38 ms |
47936 KB |
Execution killed with signal 11 |
| 40 |
Incorrect |
20 ms |
24320 KB |
Output isn't correct |
| 41 |
Runtime error |
32 ms |
48020 KB |
Execution killed with signal 11 |
| 42 |
Incorrect |
13 ms |
23716 KB |
Output isn't correct |
| 43 |
Incorrect |
48 ms |
24884 KB |
Output isn't correct |
| 44 |
Incorrect |
18 ms |
23892 KB |
Output isn't correct |
| 45 |
Incorrect |
52 ms |
24936 KB |
Output isn't correct |
| 46 |
Incorrect |
51 ms |
24900 KB |
Output isn't correct |
| 47 |
Incorrect |
46 ms |
24940 KB |
Output isn't correct |
| 48 |
Incorrect |
49 ms |
24896 KB |
Output isn't correct |
| 49 |
Incorrect |
48 ms |
24900 KB |
Output isn't correct |
| 50 |
Incorrect |
57 ms |
24864 KB |
Output isn't correct |
| 51 |
Incorrect |
46 ms |
24908 KB |
Output isn't correct |
| 52 |
Incorrect |
47 ms |
24908 KB |
Output isn't correct |
| 53 |
Incorrect |
47 ms |
24904 KB |
Output isn't correct |
| 54 |
Incorrect |
49 ms |
24904 KB |
Output isn't correct |
| 55 |
Incorrect |
49 ms |
24868 KB |
Output isn't correct |
| 56 |
Incorrect |
47 ms |
24936 KB |
Output isn't correct |
| 57 |
Incorrect |
49 ms |
24840 KB |
Output isn't correct |
| 58 |
Incorrect |
49 ms |
24968 KB |
Output isn't correct |
| 59 |
Incorrect |
50 ms |
25072 KB |
Output isn't correct |
| 60 |
Incorrect |
47 ms |
24856 KB |
Output isn't correct |
| 61 |
Incorrect |
49 ms |
24916 KB |
Output isn't correct |
| 62 |
Incorrect |
47 ms |
24900 KB |
Output isn't correct |
| 63 |
Incorrect |
48 ms |
24876 KB |
Output isn't correct |
| 64 |
Incorrect |
44 ms |
24948 KB |
Output isn't correct |
| 65 |
Incorrect |
46 ms |
24976 KB |
Output isn't correct |
| 66 |
Incorrect |
46 ms |
24924 KB |
Output isn't correct |
| 67 |
Incorrect |
46 ms |
24904 KB |
Output isn't correct |
| 68 |
Incorrect |
45 ms |
25076 KB |
Output isn't correct |
| 69 |
Incorrect |
45 ms |
24908 KB |
Output isn't correct |
| 70 |
Incorrect |
36 ms |
24388 KB |
Output isn't correct |
| 71 |
Incorrect |
46 ms |
24864 KB |
Output isn't correct |
| 72 |
Incorrect |
46 ms |
24884 KB |
Output isn't correct |
| 73 |
Incorrect |
44 ms |
24944 KB |
Output isn't correct |
| 74 |
Incorrect |
45 ms |
24908 KB |
Output isn't correct |
| 75 |
Incorrect |
47 ms |
24868 KB |
Output isn't correct |
| 76 |
Incorrect |
46 ms |
24936 KB |
Output isn't correct |
| 77 |
Incorrect |
45 ms |
24948 KB |
Output isn't correct |
| 78 |
Incorrect |
45 ms |
24964 KB |
Output isn't correct |
| 79 |
Incorrect |
45 ms |
24952 KB |
Output isn't correct |
| 80 |
Incorrect |
45 ms |
24808 KB |
Output isn't correct |
| 81 |
Incorrect |
46 ms |
24832 KB |
Output isn't correct |
| 82 |
Incorrect |
44 ms |
24820 KB |
Output isn't correct |
| 83 |
Incorrect |
46 ms |
24820 KB |
Output isn't correct |
| 84 |
Incorrect |
49 ms |
24860 KB |
Output isn't correct |
| 85 |
Incorrect |
48 ms |
24808 KB |
Output isn't correct |
| 86 |
Incorrect |
44 ms |
24780 KB |
Output isn't correct |
| 87 |
Incorrect |
47 ms |
24824 KB |
Output isn't correct |
| 88 |
Incorrect |
43 ms |
24832 KB |
Output isn't correct |
| 89 |
Incorrect |
46 ms |
24824 KB |
Output isn't correct |
| 90 |
Incorrect |
33 ms |
24780 KB |
Output isn't correct |
| 91 |
Incorrect |
45 ms |
24676 KB |
Output isn't correct |
| 92 |
Incorrect |
46 ms |
24648 KB |
Output isn't correct |
| 93 |
Incorrect |
44 ms |
24524 KB |
Output isn't correct |
| 94 |
Incorrect |
47 ms |
24532 KB |
Output isn't correct |
| 95 |
Incorrect |
51 ms |
24548 KB |
Output isn't correct |
| 96 |
Incorrect |
46 ms |
24564 KB |
Output isn't correct |
| 97 |
Incorrect |
47 ms |
24508 KB |
Output isn't correct |
| 98 |
Incorrect |
46 ms |
24556 KB |
Output isn't correct |
| 99 |
Incorrect |
47 ms |
24512 KB |
Output isn't correct |
| 100 |
Incorrect |
44 ms |
24568 KB |
Output isn't correct |
