Submission #448744

#	Time	Username	Problem	Language	Result	Execution time	Memory
448744		CaoHuuKhuongDuy	Cloud Computing (CEOI18_clo)	C++14	0 / 100	1 ms	460 KiB

clo

#include <iostream>
#include <stdio.h>
#include <algorithm>
using namespace std;
#define int long long
const int N=4e3+1;
const int oo=1e16;
int f[N][1001];
struct computer
{
	int c,f,val;
}a[N];
bool compa(computer a,computer b)
{
	if (a.f==b.f) return a.c>b.c;
	return a.f>b.f;
}
signed main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	//freopen("test.inp","r",stdin);
	int n,m;
	cin>>n;
	int sum=0;
	for (int i=1;i<=n;i++)
	  {
	    cin>>a[i].c>>a[i].f>>a[i].val;
	    a[i].val=-a[i].val;
	    sum+=a[i].c;
	  }
	cin>>m;
	for (int i=n+1;i<=n+m;i++)
	  {
	    cin>>a[i].c>>a[i].f>>a[i].val;
	    a[i].c=-a[i].c;
	  }
	n+=m;
	sort(a+1,a+1+n,compa);
	for (int i=0;i<=n;i++)
	  for (int j=0;j<=2000;j++)
	    f[i][j]=-oo;
	f[0][0]=0;
	int res=0;
	for (int i=1;i<=n;i++)
	  for (int j=0;j<=1000;j++)
	    {
	      f[i][j]=f[i-1][j];
	      if (j-a[i].c>=0) f[i][j]=max(f[i][j],f[i-1][j-a[i].c]+a[i].val);
	      if (i==n) res=max(res,f[i][j]);
	    } 
	cout<<res;
	return 0;
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:42:13: warning: iteration 1001 invokes undefined behavior [-Waggressive-loop-optimizations]
   42 |      f[i][j]=-oo;
      |      ~~~~~~~^~~~
clo.cpp:41:18: note: within this loop
   41 |    for (int j=0;j<=2000;j++)
      |                 ~^~~~~~

• Subtask 1: 0 / 18
• Subtask 2: 0 / 18
• Subtask 3: 0 / 18
• Subtask 4: 0 / 18
• Subtask 5: 0 / 18
• Subtask 6: 0 / 10