Submission #465647

#	Time	Username	Problem	Language	Result	Execution time	Memory
465647		bonopo	Kitchen (BOI19_kitchen)	C++14	100 / 100	42 ms	716 KiB

kitchen

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#define pb push_back
#define rc (i<<1)|1
#define lc (i<<1)
#define el "\n"
#define f first
#define s second

typedef long long ll;
const int MM=1e5+5, MOD=1e9+7, LOG=19;
int N, M, K, dp[MM], mn=1e9, sm;

int32_t main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    cin>>N>>M>>K;
    for(int i=1, x; i<=N; ++i) {
        cin>>x, sm+=x, mn=min(mn, x); }
    memset(dp, -0x3f, sizeof(dp)); dp[0]=0;
    if(mn<K) {
        return cout<<"Impossible", 0; }
    for(int i=1, x; i<=M; ++i) {
        cin>>x;
        for(int j=MM-1; j>=x; --j) dp[j]=max(dp[j], dp[j-x]+min(x, N)); }
    for(int i=sm; i<MM; ++i) if(dp[i]>=N*K) {
        return cout<<i-sm<<el, 0; }
    cout<<"Impossible"<<el;
}

// MM

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