This documentation is automatically generated by online-judge-tools/verification-helper
// verification-helper: PROBLEM http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2450
#include <bits/stdc++.h>
using namespace std;
#define call_from_test
#include "../../linkcuttree/base.cpp"
#include "../../linkcuttree/path.cpp"
#undef call_from_test
signed main(){
cin.tie(0);
ios::sync_with_stdio(0);
int n,q;
cin>>n>>q;
struct T{
int sm,va,vi,vl,vr;
T(int sm,int va,int vi,int vl,int vr):
sm(sm),va(va),vi(vi),vl(vl),vr(vr){}
T(){}
};
const int INF = 1e9;
int ei=-INF;
auto f=[&](T a,T b){
T c;
c.sm=a.sm+b.sm;
c.va=a.va+b.va;
c.vi=max({a.vi,b.vi,a.vr+b.vl});
c.vl=max({a.vl,a.va+b.vl});
c.vr=max({b.vr,a.vr+b.va});
return c;
};
auto g=[&](T a,int b){
if(b>=0) return T(a.sm,b*a.sm,b*a.sm,b*a.sm,b*a.sm);
return T(a.sm,b*a.sm,b,b,b);
};
auto h=[&](int,int b){return b;};
auto s=
[&](T a){
swap(a.vl,a.vr);
return a;
};
using Node = NodeBase<T, int>;
constexpr size_t LIM = 2e5+100;
using LCT = Path<Node, LIM>;
LCT lct(f,g,h,s,ei);
vector<int> ws(n);
for(int i=0;i<n;i++) cin>>ws[i];
for(int i=0;i<n;i++) lct.create(g(T(1,0,0,0,0),ws[i]));
for(int i=0;i<n-1;i++){
int a,b;
cin>>a>>b;
a--;b--;
lct.evert(lct[b]);
lct.link(lct[a],lct[b]);
}
for(int i=0;i<q;i++){
int t,a,b,c;
cin>>t>>a>>b>>c;
a--;b--;
if(t==1){
lct.evert(lct[a]);
lct.update(lct[b],c);
}
if(t==2){
lct.evert(lct[a]);
auto res=lct.query(lct[b]);
cout<<max({res.va,res.vi,res.vl,res.vr})<<"\n";
}
}
cout<<flush;
return 0;
}
Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.11.3/x64/lib/python3.11/site-packages/onlinejudge_verify/documentation/build.py", line 71, in _render_source_code_stat
bundled_code = language.bundle(stat.path, basedir=basedir, options={'include_paths': [basedir]}).decode()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.11.3/x64/lib/python3.11/site-packages/onlinejudge_verify/languages/cplusplus.py", line 187, in bundle
bundler.update(path)
File "/opt/hostedtoolcache/Python/3.11.3/x64/lib/python3.11/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 401, in update
self.update(self._resolve(pathlib.Path(included), included_from=path))
File "/opt/hostedtoolcache/Python/3.11.3/x64/lib/python3.11/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 400, in update
raise BundleErrorAt(path, i + 1, "unable to process #include in #if / #ifdef / #ifndef other than include guards")
onlinejudge_verify.languages.cplusplus_bundle.BundleErrorAt: linkcuttree/path.cpp: line 6: unable to process #include in #if / #ifdef / #ifndef other than include guards