Submission #366032

#	Time	Username	Problem	Language	Result	Execution time	Memory
366032		Yomapeed	Kitchen (BOI19_kitchen)	C++17	100 / 100	185 ms	216172 KiB

kitchen

#include<bits/stdc++.h>
#define pi 3.141592653589793238
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#define MOD 1000000007
#define INF 999999999999999999 
#define pb push_back
#define ff first
#define ss second
 
#define mt make_tuple
#define ll long long
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>

using namespace __gnu_pbds;
 
 
typedef tree<ll, null_type, less_equal<ll>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
 
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
const int N = 3e2 + 2;
ll dp[N][N * N];
void chmax(ll& a, ll b){
    a = max(a, b);
} 
int main() {
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    fast;
    ll T = 1, i, j;
    
    //cin >> T;
    while (T--) {
        ll n, m, k;
        cin >> n >> m >> k;
        vector<ll> a(n), b(m);
        bool flag = true;
        ll sum = 0;
        ll sa = 0;
        for(i = 0; i < n; i++){
            cin >> a[i];
            if(a[i] < k){
                flag = false;
            }
            sum += a[i];
        }
        sa = sum;
        for(i = 0; i < m; i++){
            cin >> b[i];
            sum -= b[i];
        }
        if(sum > 0){
            flag = false;
        }
        if(m < k){
            flag = false;
        }
        if(!flag){
            cout << "Impossible\n";
            return 0;
        }
        for(i = 0; i < N; i++){
            for(j = 0; j < N * N; j++){
                dp[i][j] = -INF;
            }
        }
        dp[0][0] = 0;
        for(i = 0; i < m; i++){
            ll B = min(b[i], n);
            for(ll x = 0; x < N * N; x++){
                if(x - b[i] >= 0 && dp[i][x - b[i]] != -INF){
                    chmax(dp[i + 1][x], dp[i][x - b[i]] + B);
                }
                chmax(dp[i + 1][x], dp[i][x]);
            }
        }
        ll ans = INF;
        //cout << sa << endl;
        for(i = sa; i < N * N; i++){
            if(dp[m][i] >= n * k){
                //cout << i << " " << dp[m][i] << endl;
                ans = i - sa;
                break;
            }
        }
        if(ans == INF){
            cout << "Impossible\n";
            return 0;
        }
        cout << ans << endl;
    }
    return 0;
}

Compilation message (stderr)

kitchen.cpp:4: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    4 | #pragma GCC optimization ("O3")
      | 
kitchen.cpp:5: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    5 | #pragma GCC optimization ("unroll-loops")
      |

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