Submission #1166752

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166752		son2008	Kitchen (BOI19_kitchen)	C++20	100 / 100	68 ms	107204 KiB

kitchen

#include<bits/stdc++.h>
using namespace std;
#define task "task"
#define ii pair<int,int>
#define fi first
#define se second
//#define int long long
#define ll long long
#define ld double
#define mp make_pair
#define lg2 30
#define iii pair<int,ii>
#define iiii pair<ii,ii>
#define base 29
#define eps 1e-8
int dx[]= {0LL,0LL,1,-1,1,1,-1,-1};
int dy[]= {1,-1,0LL,0LL,1,-1,1,-1};
const int maxn=3e2+1;
const int mod=1e9+7;
int n,m,k,dp[maxn][maxn*maxn],a[maxn],b[maxn];
void init()
{
    cin>>n>>m>>k;
    int s=0,sum=0;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        s+=a[i];
    }
    for(int i=1;i<=m;i++)
    {
        cin>>b[i];
        sum+=b[i];
    }
    for(int i=1;i<=n;i++)
    {
        if(a[i]<k)
        {
            cout<<"Impossible";
            return;
        }
    }
    memset(dp,-0x3f,sizeof(dp));
    dp[0][0]=0;
    for(int i=1;i<=m;i++)
    {
        for(int j=0;j<=sum;j++)
        {
            dp[i][j]=dp[i-1][j];
            if(j>=b[i])dp[i][j]=max(dp[i][j],dp[i-1][j-b[i]]+min(n,b[i]));
        }
    }
    for(int i=s;i<=sum;i++)
    {
        if(dp[m][i]>=n*k)
        {
            cout<<i-s;
            return;
        }
    }
    cout<<"Impossible";
}
void process()
{

}
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if(fopen(task".inp","r"))
    {
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
    init();
    process();
    cerr <<endl<< "TIME : " << clock() * 0.001 << "s" << endl ;
}

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:74:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
kitchen.cpp:75:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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