Submission #203990

#	Time	Username	Problem	Language	Result	Execution time	Memory
203990		mdn2002	Kitchen (BOI19_kitchen)	C++14	0 / 100	138 ms	504 KiB

kitchen

#include<bits/stdc++.h>
using namespace std;
int n,m,k,a[305],b[305],c[305],d[303],mn=1e9;
vector<int>v;
int ckk()
{
    memset(c,0,sizeof c);
    memset(d,0,sizeof d);
    vector<int>vv=v;
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<vv.size();j++)
        {
            if(vv[j]==0)continue;
            if(d[i]==k)break;
            d[i]++;
            vv[j]--;
            c[i]++;
        }
        if(d[i]!=k)return 0;
    }
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<vv.size();j++)
        {
            if(vv[j]==0)continue;
            if(c[i]==a[i])break;
            int old=c[i];
            c[i]+=min(a[i]-c[i],vv[j]);
            vv[j]-=min(a[i]-old,vv[j]);
        }
        if(c[i]!=a[i])return 0;
    }
    int sum=0;
    for(int i=0;i<vv.size();i++)sum+=vv[i];
    mn=min(mn,sum);
    return 1;
}
bool ck(int val)
{
    int l=0,r=0,sum=0,mx=0;
    while(l<m)
    {
        if(r<m&&sum<=val)
        {
            sum+=b[r];
            v.push_back(b[r]);
            r++;
        }
        else
        {
            sum-=b[l];
            v.erase(v.begin());
            l++;
        }
        if(sum<=val)mx=max(mx,ckk());
    }
    return mx;
}
int main()
{
    cin>>n>>m>>k;
    for(int i=0;i<n;i++)cin>>a[i];
    for(int i=0;i<m;i++)cin>>b[i];
    sort(a,a+n);
    sort(b,b+m);
    int l=0,r=100000,mid;
    while(l<r)
    {
        mid=(l+r)/2;
        int c=ck(mid);
        if(c)r=mid;
        else l=mid+1;
    }
    if(mn!=1e9)cout<<mn<<endl;
    else cout<<"Impossible"<<endl;
}

Compilation message (stderr)

kitchen.cpp: In function 'int ckk()':
kitchen.cpp:12:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=0;j<vv.size();j++)
                     ~^~~~~~~~~~
kitchen.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=0;j<vv.size();j++)
                     ~^~~~~~~~~~
kitchen.cpp:35:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<vv.size();i++)sum+=vv[i];
                 ~^~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 22
• Subtask 3: 0 / 20
• Subtask 4: 0 / 21
• Subtask 5: 0 / 28