Submission #1124235

#	Time	Username	Problem	Language	Result	Execution time	Memory
1124235		hainam2k9	Kitchen (BOI19_kitchen)	C++20	100 / 100	17 ms	584 KiB

kitchen

#include <bits/stdc++.h>
#define tt cin.tie(0), cout.tie(0), ios_base::sync_with_stdio(0)
#define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
#define ll long long
#define ull unsigned long long
#define i128 __int128
#define db long double
#define sz(a) ((int)(a).size())
#define pb emplace_back
#define pf emplace_front
#define pob pop_back
#define pof pop_front
#define lb lower_bound
#define ub upper_bound
#define fi first
#define se second
#define ins emplace
#define mp make_pair
using namespace std;
const int MOD = 1e9+7, MAXN = 1e5+5;
const string NAME = "";
int n,m,k,x,dp[MAXN],sum=0;
int main()
{
    tt;
    if(fopen((NAME + ".INP").c_str(), "r")) fo;
    cin >> n >> m >> k;
    for(int i = 1; i<=n; ++i){
        cin >> x, sum+=x;
        if(x<k){
            cout << "Impossible";
            return 0;
        }
    }
    memset(dp,-0x3f,sizeof(dp));
    dp[0]=0;
    for(int i = 1; i<=m; ++i){
        cin >> x;
        for(int j = 300*300; j>=x; --j)
            dp[j]=max(dp[j],dp[j-x]+min(x,n));
    }
    for(int i = sum; i<=300*300; ++i)
        if(dp[i]>=n*k){
            cout << i-sum;
            return 0;
        }
    cout << "Impossible";
}

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:3:19: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kitchen.cpp:26:45: note: in expansion of macro 'fo'
   26 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~
kitchen.cpp:3:63: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |                                                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kitchen.cpp:26:45: note: in expansion of macro 'fo'
   26 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~

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