Submission #48230863

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Source Code Expand

// LUOGU_RID: 138434138
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;

#define rep(i,l,r) for(int i(l);i<=(r);++i)
#define per(i,r,l) for(int i(r);i>=(l);--i)
#define eb emplace_back
#define File(filename) freopen(filename ".in","r",stdin),freopen(filename ".out","w",stdout)

#ifdef EXODUS
	#define Debug(...) fprintf(stderr,__VA_ARGS__)
#else
	#define Debug(...) 0
#endif

//=========================================================================================================
// Something about IO

template<typename T>
void read(T &x){
	x=0;T flg=1;
	char ch=getchar();
	while(!isdigit(ch)){if(ch=='-')flg=-1;ch=getchar();}
	while(isdigit(ch))x=(x<<3)+(x<<1)+(ch^48),ch=getchar();
	x*=flg;
}
template<typename T,typename... Args>
void read(T &x,Args &...args){read(x),read(args...);}

//=========================================================================================================
// Define the global variables here.

bool membg=0;

const int N=2e5+7;
int n;
int a[N];

bool memed=0;

//=========================================================================================================
// Code here.

void solve(){
	read(n);
	for(int i=1;i<=n;i++){read(a[i]);}
	sort(a+1,a+n+1);
	int pos=partition(a+1,a+n+1,[&](int x){return x<0;})-a;
	// for(int i=1;i<=n;i++)Debug("%d ",a[i]);
	// Debug("\n");
	vector<int>lis;
	// Debug("pos = %d\n",pos);
	for(int i=1;i<pos&&i<=3;i++)lis.eb(i);
	for(int i=pos-1;i>=1&&i>=pos-3;i--)lis.eb(i);
	for(int i=pos;i<=n&&i<=pos+2;i++)lis.eb(i);
	for(int i=n;i>=n-2&&i>=pos;i--)lis.eb(i);
	sort(lis.begin(),lis.end());lis.erase(unique(lis.begin(),lis.end()),lis.end());
	ldb mnans=1e18,mxans=-1e18;
	for(auto x:lis)for(auto y:lis)for(auto z:lis){
		if(x==y||y==z||z==x)continue;
		// printf("%d %d %d\n",x,y,z);
		ldb cur=(ldb)(a[x]+a[y]+a[z])/a[x]/a[y]/a[z];
		mxans=max(mxans,cur);
		mnans=min(mnans,cur);
	}
	printf("%.15Lf\n%.15Lf\n",mnans,mxans);
	return;
}


//=========================================================================================================

int main(){
	Debug("%.3lfMB\n",fabs(&memed-&membg)/1024.0/1024.0);
	int timbg=clock();
	int T=1;
	while(T--)solve();
	int timed=clock();
	Debug("%.3lfs\n",1.0*(timed-timbg)/CLOCKS_PER_SEC);
	fflush(stdout);
	return 0;
}

Submission Info

Compile Error

Main.cpp: In function ‘int main()’:
Main.cpp:18:28: warning: statement has no effect [-Wunused-value]
   18 |         #define Debug(...) 0
      |                            ^
Main.cpp:79:9: note: in expansion of macro ‘Debug’
   79 |         Debug("%.3lfMB\n",fabs(&memed-&membg)/1024.0/1024.0);
      |         ^~~~~
Main.cpp:18:28: warning: statement has no effect [-Wunused-value]
   18 |         #define Debug(...) 0
      |                            ^
Main.cpp:84:9: note: in expansion of macro ‘Debug’
   84 |         Debug("%.3lfs\n",1.0*(timed-timbg)/CLOCKS_PER_SEC);
      |         ^~~~~
Main.cpp:80:13: warning: unused variable ‘timbg’ [-Wunused-variable]
   80 |         int timbg=clock();
      |             ^~~~~
Main.cpp:83:13: warning: unused variable ‘timed’ [-Wunused-variable]
   83 |         int timed=clock();
      |             ^~~~~

Judge Result