Submission #854454

#	Time	Username	Problem	Language	Result	Execution time	Memory
854454		Wansur	Closing Time (IOI23_closing)	C++17	Compilation error	0 ms	0 KiB

closing

#include <vector>
#include<bits/stdc++.h>
#define f first
#define s second

using namespace std;
const int mx=2e5+12;

vector<pair<int,long long>> g[mx];
long long d[mx];
long long d1[mx];
long long d2[mx];
int p1[mx];
int p2[mx];
int A[mx];
long long n,k;
bool ok=0;

void dfs(int v,int p,bool ok){
	for(auto To:g[v]){
		int to=To.f,w=To.s;
		if(to==p){
			continue;
		}
		if(ok){
			p2[to]=v;
			d2[to]=d2[v]+w;
		}
		else{
			p1[to]=v;
			d1[to]=d1[v]+w;
		}
		dfs(to,v,ok);
	}
}

void dfs1(int v,int p,int d){
	d=min(d,A[v]);
	if(!d && A[v]){
		ok=1;
	}
	for(auto To:g[v]){
		if(To.f!=p){
			dfs1(To.f,v,d,mask);
		}
	}
}

int max_score(int N, int x, int y, long long K, std::vector<int> U,std::vector<int> V, std::vector<int> W){
	n=N,k=K;
	for(int i=0;i<n;i++){
		g[i].clear();
		d1[i]=d2[i]=0;
		p1[i]=p2[i]=-1;
	}
	for(int i=0;i<n-1;i++){
		g[V[i]].push_back({U[i],W[i]});
		g[U[i]].push_back({V[i],W[i]});
	}	
	dfs(x,-1,0);
	dfs(y,-1,1);
	vector<int> a,b;
	for(int mask=0;mask<(1<<n);mask++){
		for(int i=0;i<n;i++){
			A[i]=0;
			if((mask&(1<<i))){
				A[i]=1;
			}
		}
		ok=0;
		dfs1(x,-1,1,mask);
		if(!ok){
			a.push_back(mask);
		}
		ok=0;
		dfs1(y,-1,1,mask);
		if(!ok){
			b.push_back(mask);
		}
	}
	int ans=0;
	for(int x:a){
		for(int y:b){
			long long sum=0;
			int cnt=0;
			for(int i=0;i<n;i++){
				long long t=0;
				if(((1<<i)&x)){
					t=d1[i];
					cnt++;
				}
				if(((1<<i)&y)){
					t=max(t,d2[i]);
					cnt++;
				}
				sum+=t;
			}
			if(sum<=k){
				ans=max(ans,cnt);
			}
		}
	}
	return ans;
}

Compilation message (stderr)

closing.cpp: In function 'void dfs1(int, int, int)':
closing.cpp:44:18: error: 'mask' was not declared in this scope; did you mean 'std::filesystem::perms::mask'?
   44 |    dfs1(To.f,v,d,mask);
      |                  ^~~~
      |                  std::filesystem::perms::mask
In file included from /usr/include/c++/10/filesystem:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from closing.cpp:2:
/usr/include/c++/10/bits/fs_fwd.h:152:7: note: 'std::filesystem::perms::mask' declared here
  152 |       mask  = 07777,
      |       ^~~~
closing.cpp: In function 'int max_score(int, int, int, long long int, std::vector<int>, std::vector<int>, std::vector<int>)':
closing.cpp:71:19: error: too many arguments to function 'void dfs1(int, int, int)'
   71 |   dfs1(x,-1,1,mask);
      |                   ^
closing.cpp:37:6: note: declared here
   37 | void dfs1(int v,int p,int d){
      |      ^~~~
closing.cpp:76:19: error: too many arguments to function 'void dfs1(int, int, int)'
   76 |   dfs1(y,-1,1,mask);
      |                   ^
closing.cpp:37:6: note: declared here
   37 | void dfs1(int v,int p,int d){
      |      ^~~~