# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
922506 |
2024-02-05T15:13:20 Z |
cpptowin |
Museum (CEOI17_museum) |
C++17 |
|
434 ms |
1048576 KB |
#include<bits/stdc++.h>
#define fo(i,d,c) for(int i=d;i<=c;i++)
#define fod(i,c,d) for(int i=c;i>=d;i--)
#define maxn 1000010
#define N 1010
#define fi first
#define se second
#define pb emplace_back
#define en cout<<"\n";
#define int long long
#define inf 1000000000
#define pii pair<int,int>
#define vii vector<pii>
#define lb(x) x&-x
#define bit(i,j) ((i>>j)&1)
#define offbit(i,j) (i^(1<<j))
#define onbit(i,j) (i|(1<<j))
#define vi vector<int>
template <typename T1, typename T2> bool minimize(T1 &a, T2 b){if (a > b) {a = b; return true;} return false;}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b){if (a < b) {a = b; return true;} return false;}
using namespace std;
int n,k,x;
vii ke[maxn];
int f[10001][10001][2];
int sz[maxn];
void dfs(int u,int parent)
{
sz[u] = 1;
for(auto [v,w] : ke[u])
{
if(v == parent) continue;
dfs(v,u);
sz[u] += sz[v];
fod(i,sz[u],2) fo(j,max(0LL,i - sz[u] + sz[v]),min(i,sz[v]))
{
f[u][i][0] = min(f[u][i][0],f[v][j][1] + f[u][i - j][0] + 2 * w);
f[u][i][0] = min(f[u][i][0],f[v][j][0] + f[u][i - j][1] + w);
f[u][i][1] = min(f[u][i][1],f[v][j][1] + f[u][i - j][1] + 2 * w);
}
}
}
main()
{
#define name "TASK"
if(fopen(name".inp","r"))
{
freopen(name".inp","r",stdin);
freopen(name".out","w",stdout);
}
ios_base::sync_with_stdio(false);cin.tie(NULL);
cin >> n >> k >> x;
fo(i,1,n - 1)
{
int u,v,w;
cin >> u >> v >> w;
ke[u].pb(v,w);
ke[v].pb(u,w);
}
fo(i,1,n) fo(j,2,k) f[i][j][0] = f[i][j][1] = inf;
dfs(x,x);
cout << f[x][k][0];
}
Compilation message
museum.cpp:42:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
42 | main()
| ^~~~
museum.cpp: In function 'int main()':
museum.cpp:47:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
47 | freopen(name".inp","r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
museum.cpp:48:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
48 | freopen(name".out","w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
8 ms |
31576 KB |
Output is correct |
2 |
Correct |
7 ms |
31580 KB |
Output is correct |
3 |
Correct |
7 ms |
31580 KB |
Output is correct |
4 |
Correct |
7 ms |
31580 KB |
Output is correct |
5 |
Correct |
7 ms |
31580 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
191 ms |
372872 KB |
Output is correct |
2 |
Correct |
167 ms |
373616 KB |
Output is correct |
3 |
Correct |
390 ms |
584000 KB |
Output is correct |
4 |
Correct |
232 ms |
438612 KB |
Output is correct |
5 |
Correct |
182 ms |
389200 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
191 ms |
372872 KB |
Output is correct |
2 |
Correct |
167 ms |
373616 KB |
Output is correct |
3 |
Correct |
390 ms |
584000 KB |
Output is correct |
4 |
Correct |
232 ms |
438612 KB |
Output is correct |
5 |
Correct |
182 ms |
389200 KB |
Output is correct |
6 |
Correct |
171 ms |
377940 KB |
Output is correct |
7 |
Correct |
289 ms |
504728 KB |
Output is correct |
8 |
Correct |
392 ms |
383144 KB |
Output is correct |
9 |
Correct |
315 ms |
383180 KB |
Output is correct |
10 |
Correct |
189 ms |
382296 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
8 ms |
31576 KB |
Output is correct |
2 |
Correct |
7 ms |
31580 KB |
Output is correct |
3 |
Correct |
7 ms |
31580 KB |
Output is correct |
4 |
Correct |
7 ms |
31580 KB |
Output is correct |
5 |
Correct |
7 ms |
31580 KB |
Output is correct |
6 |
Correct |
191 ms |
372872 KB |
Output is correct |
7 |
Correct |
167 ms |
373616 KB |
Output is correct |
8 |
Correct |
390 ms |
584000 KB |
Output is correct |
9 |
Correct |
232 ms |
438612 KB |
Output is correct |
10 |
Correct |
182 ms |
389200 KB |
Output is correct |
11 |
Correct |
171 ms |
377940 KB |
Output is correct |
12 |
Correct |
289 ms |
504728 KB |
Output is correct |
13 |
Correct |
392 ms |
383144 KB |
Output is correct |
14 |
Correct |
315 ms |
383180 KB |
Output is correct |
15 |
Correct |
189 ms |
382296 KB |
Output is correct |
16 |
Correct |
213 ms |
490508 KB |
Output is correct |
17 |
Correct |
434 ms |
997860 KB |
Output is correct |
18 |
Correct |
296 ms |
559200 KB |
Output is correct |
19 |
Correct |
383 ms |
495952 KB |
Output is correct |
20 |
Correct |
234 ms |
495448 KB |
Output is correct |
21 |
Runtime error |
360 ms |
1048576 KB |
Execution killed with signal 9 |
22 |
Halted |
0 ms |
0 KB |
- |