Submission #490299

#	Time	Username	Problem	Language	Result	Execution time	Memory
490299		robell	Kitchen (BOI19_kitchen)	C++14	100 / 100	27 ms	676 KiB

kitchen

/*
Problem: 
Problem Link: 
Notes: 
*/
#pragma GCC optimize("O2")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag, tree_order_statistics_node_update> indexed_set;
typedef long long ll;
#define pb push_back
#define eb emplace_back
#define countbits __builtin_popcount
#define beg0 __builtin_clz
#define terminal0 __builtin_ctz
#define f first
#define s second
int mod=1e9+7;
inline void rv(int &n){
    n=0;int m=1;char c=getchar_unlocked();
    if (c=='-'){m=-1; c=getchar_unlocked();}
    for (;c>47 && c<58;c=getchar_unlocked()){n=n*(1<<1)+n*(1<<3)+c-48;}
    n*=m;
}
inline void rv(ll &n){
    n=0;int m=1;char c=getchar_unlocked();
    if (c=='-'){m=-1; c=getchar_unlocked();}
    for (;c>47 && c<58;c=getchar_unlocked()){n=n*(1<<1)+n*(1<<3)+c-48;}
    n*=m;
}
inline void rv(double &n){
    n=0;int m=1;char c=getchar_unlocked();
    if (c=='-'){m=-1; c=getchar_unlocked();}
    for (;c>47 && c<58;c=getchar_unlocked()){n=n*(1<<1)+n*(1<<3)+c-48;}
    if (c=='.'){
        double p = 0.1;c=getchar_unlocked();
        for (;c>47 && c<58;c=getchar_unlocked()){n+=((c-48)*p);p/=10;}
    }
    n*=m;
}
inline void rv(float &n){
    n=0;int m=1;char c=getchar_unlocked();
    if (c=='-'){m=-1; c=getchar_unlocked();}
    for (;c>47 && c<58;c=getchar_unlocked()){n=n*(1<<1)+n*(1<<3)+c-48;}
    if (c=='.'){
        double p = 0.1;c=getchar_unlocked();
        for (;c>47 && c<58;c=getchar_unlocked()){n+=((c-48)*p);p/=10;}
    }
    n*=m;
}
inline void rv(string &w){
    w="";char c=getchar_unlocked();
    while (c!=' '&&c!='\n'&&c!=EOF){w+=c;c=getchar_unlocked();}
}
inline void rv(char &c){c=getchar_unlocked();}
template<typename T, typename ...Types>
void rv(T &n, Types&&... args){rv(n);rv(args...);}
void setIO(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
}
void setIO(string f){
	freopen((f+".in").c_str(),"r",stdin);
	freopen((f+".out").c_str(),"w",stdout);
	setIO();
}
int N, M, K, a[(int)300], b[(int)300], dp[90300];
int main(){
	setIO();cin >> N >> M >> K;
    for (int i=0;i<N;i++) cin >> a[i];
    for (int i=0;i<M;i++) cin >> b[i];
    int sum = 0;
    int minv = 1e9;for (int i=0;i<N;i++) minv=min(minv,a[i]), sum+=a[i];
    if (minv<K){cout << "Impossible\n";return 0;}
    memset(dp,-1,sizeof(dp));
    dp[0]=0;
    for (int i=0;i<M;i++){
        for (int j=90300-b[i]-1;j>=0;j--){
            if (dp[j]!=(-1)){
                dp[j+b[i]]=max(dp[j+b[i]],dp[j]+min(b[i],N));
            }
        }
    }
    int v = 1e9;
    for (int i=sum;i<90300;i++){
        if (dp[i]>=N*K){
            v=min(v,i-sum);
        }
    }
    cout << ((v==1e9)?"Impossible":to_string(v)) << "\n";
}

Compilation message (stderr)

kitchen.cpp: In function 'void setIO(std::string)':
kitchen.cpp:65:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |  freopen((f+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kitchen.cpp:66:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |  freopen((f+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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