QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#791219 | #6742. Leaves | HJR# | WA | 1ms | 3868kb | C++17 | 4.1kb | 2024-11-28 17:30:31 | 2024-11-28 17:30:33 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define endl "\n"
#define debug(x) cout<<#x<<": "<<x<<endl
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
using ll=long long;
using ull=unsigned long long;
void solve(){
int n,m;
cin >> n >> m;
vector<vector<int>>e(n+1);
vector<int>fa(n+1);
vector<int>son_vis(n+1);
vector<int>label(n+1);
vector<int>dep(n+1);
vector<array<int,2>>cmp;
for(int i = 1;i <= n;i++)
{
int opt;
cin>>opt;
if(opt == 1)
{
int a,b;
cin>>a>>b;
e[i].push_back(a);
e[i].push_back(b);
son_vis[a] = 0,son_vis[b] = 1;
fa[a] = fa[b] = i;
dep[a] = dep[b] = dep[i] + 1;
}
else
{
cin >> label[i];
cmp.push_back({label[i],i});
}
}
sort(cmp.begin(),cmp.end());
vector<int>ord;
auto dfs = [&](auto &&self,int u) ->void
{
for(auto v:e[u])
self(self,v);
if(e[u].empty())
ord.push_back(u);
};
auto LCA = [&](int x,int y)
{
int len = 1;
while(fa[x] != fa[y])
{
if(dep[x] > dep[y])
x = fa[x];
else if(dep[x] < dep[y]){
len += (son_vis[x] != son_vis[y]);
y = fa[y];
}
else{
len += (son_vis[x] != son_vis[y]);
x = fa[x];
y = fa[y];
}
}
return len;
};
auto SWAP = [&](int y)
{
int f = fa[y];
swap(e[f][0],e[f][1]);
swap(son_vis[e[f][0]],son_vis[e[f][1]]);
};
auto update = [&](int x,int y)
{
while(fa[x] != fa[y])
{
if(dep[x] > dep[y])
x = fa[x];
else if(dep[x] < dep[y]){
if(son_vis[y] != son_vis[x])
SWAP(y);
y = fa[y];
}
else{
if(son_vis[x] != son_vis[y])
SWAP(y);
x = fa[x];
y = fa[y];
}
}
SWAP(y);
};
array<int,2> temp = {0,0};
for(int i = 1; e[i].size() ;i = e[i][1])
{
ord.clear();
dfs(dfs,i);
sort(ord.begin()+1,ord.end(),[&](const int &x,const int &y){
return label[x] < label[y];
});
for(int j = 1;j<ord.size() && label[ord[j]] < label[ord[0]];j++)
{
int lca = LCA(ord[0],ord[j]);
//cout<<ord[0] <<" "<<ord[j]<<" "<<lca<<endl;
if(m >= lca)
{
// cout<<ord[0]<<" "<<ord[j]<<endl;
temp = {ord[0],ord[j]};
update(ord[0],ord[j]);
m -= lca;
break;
}
}
}
ord.clear();
dfs(dfs,1);
auto chmin = [&](vector<int> &x,vector<int> &y)
{
for(int i = 0;i < x.size();i++)
if(x[i] != label[y[i]])
{
if(x[i] > label[y[i]])
{
for(int j = 0;j < x.size();j++)
{
x[j] = label[y[j]];
}
}
return;
}
};
if(m % 2)
{
vector<int>ans(ord.size(),1e9);
for(int i = 1;i <= n;i++)
{
if(e[i].size())
{
ord.clear();
SWAP(e[i][1]);
dfs(dfs,1);
chmin(ans,ord);
SWAP(e[i][1]);
}
}
for(auto i:ans)
cout<<i<<" ";
cout<<endl;
return;
}
for(auto i:ord)
cout<<label[i]<<" ";
cout<<endl;
}
signed main(){
ios::sync_with_stdio(0);
cout.tie(0);
cin.tie(0);
int t = 1;
//cin>>t;
while(t--){
solve();
}
}
/*
贡献法
正难则反
数小状压
关系连边
拆位
广义单调性
最长转最短
*/
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3820kb
input:
3 0 1 2 3 2 1 2 2
output:
1 2
result:
ok 2 number(s): "1 2"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
7 1 1 2 3 1 4 5 1 6 7 2 4 2 2 2 3 2 1
output:
2 4 3 1
result:
ok 4 number(s): "2 4 3 1"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3680kb
input:
7 2 1 2 3 1 4 5 1 6 7 2 4 2 2 2 3 2 1
output:
1 3 4 2
result:
ok 4 number(s): "1 3 4 2"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3628kb
input:
1 0 2 1000000000
output:
1000000000
result:
ok 1 number(s): "1000000000"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3868kb
input:
3 1 1 2 3 2 1 2 2
output:
2 1
result:
ok 2 number(s): "2 1"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3668kb
input:
7 2 1 2 3 1 4 5 1 6 7 2 1 2 2 2 3 2 4
output:
1 2 3 4
result:
ok 4 number(s): "1 2 3 4"
Test #7:
score: -100
Wrong Answer
time: 1ms
memory: 3732kb
input:
999 480 1 3 2 1 4 5 1 6 7 1 9 8 1 10 11 1 13 12 1 14 15 1 16 17 1 19 18 1 21 20 1 23 22 1 25 24 1 27 26 1 28 29 1 30 31 1 33 32 1 35 34 1 37 36 1 38 39 1 41 40 1 42 43 1 45 44 1 46 47 1 48 49 1 51 50 1 52 53 1 55 54 1 56 57 1 58 59 1 61 60 1 62 63 1 64 65 1 67 66 1 69 68 1 71 70 1 73 72 1 74 75 1 76...
output:
34826804 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 248820103 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 763875883 7...
result:
wrong answer 9th numbers differ - expected: '248820103', found: '763875883'