Submission #1161836

#	Time	Username	Problem	Language	Result	Execution time	Memory
1161836		dosts	Kitchen (BOI19_kitchen)	C++20	51 / 100	185 ms	212492 KiB

kitchen

#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
using namespace std;
#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define sp << " " <<    
#define all(cont) cont.begin(),cont.end()
#define vi vector<int>

const int inf = 1e17,N = 1e5+50,MOD =  1e9+7;

void solve() {  
    int n,m,k;
    cin >> n >> m >> k;
    vi a(n+1),b(m+1);
    for (int i=1;i<=n;i++) cin >> a[i];
    int s = 0;
    for (int i=1;i<=n;i++) s+=a[i];
    for (int i=1;i<=n;i++) {
        if (a[i] < k) {
            cout << "Impossible\n";
            return;
        }
    }
    for (int i=1;i<=m;i++) cin >> b[i];
    int maxsm = 300*m;
    int dp[m+1][maxsm+1];
    for (int i=0;i<=m;i++) for (int j = 0;j<=maxsm;j++) dp[i][j] = -inf;
    dp[0][0] = 0;
    int ans = inf;
    for (int i = 0;i<m;i++) {
        for (int j = 0;j<=maxsm;j++) {
            if (dp[i][j] == -inf) continue;
            dp[i+1][j] = max(dp[i+1][j],dp[i][j]);
            if (j+b[i+1] <= maxsm) dp[i+1][j+b[i+1]] = max(dp[i+1][j+b[i+1]],dp[i][j]+1);
        }
    }
    for (int i = s;i<=maxsm;i++) {
        if (dp[m][i] > k) {
            ans = min(ans,i);
        }
    }
    sort(b.begin()+1,b.end());
    for (int i = 0;i<=m;i++) for (int j = 0;j<=maxsm;j++) dp[i][j] = -inf;
    dp[0][0] = 0;
    for (int i=0;i<m;i++) {
        for (int j = 0;j<=maxsm;j++) {
            if (dp[i][j] == -inf) continue;
            dp[i+1][j] = max(dp[i+1][j],dp[i][j]);
            if (b[i+1] >= n && j+b[i+1] <= maxsm) dp[i+1][j+b[i+1]] = max(dp[i+1][j+b[i+1]],dp[i][j]+1); 
        }
    }
    for (int i = s;i<=maxsm;i++) {
        if (dp[m][i] >= k) {
            ans = min(ans,i);
        }
    }
    if (ans == inf) cout << "Impossible\n";
    else cout << ans-s << '\n';
}

int32_t main() { 
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    #ifdef Dodi 
    freopen("in.txt","r",stdin);
    freopen("out.txt","w",stdout);
    #endif
    int t = 1;
    //cin >> t;
    while (t --> 0) solve();
}

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