Submission #1095285

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095285		Tymond	Kitchen (BOI19_kitchen)	C++17	100 / 100	25 ms	828 KiB

kitchen

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
#define fi first
#define se second
#define vi vector<int>
#define vll vector<long long>
#define pii pair<int, int>
#define pll pair<long long, long long>
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::steady_clock::now().time_since_epoch().count());
inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);}
inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng64);}
#ifdef DEBUG
auto&operator<<(auto&o,pair<auto,auto>p){return o<<"("<<p.first<<", "<<p.second<<")";}
auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<","+!i++<<e;return o<<"}";}
#define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X)
#else
#define debug(...){}
#endif
 
struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }
 
    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

const int INF = 1e9;
const int MAXN = 3e2 + 7;
const int MAXS = 9e4 + 7;
int a[MAXN];//zadania
int b[MAXN];//kucharze
int dp[MAXS];
int n, m, k;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);

    cin >> n >> m >> k;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
    }

    for(int i = 1; i <= m; i++){
        cin >> b[i];
    }

    for(int i = 1; i < MAXS; i++){
        dp[i] = -INF;
    }
    dp[0] = 0;
    for(int i = 1; i <= m; i++){
        for(int j = MAXS - b[i] - 1; j >= 0; j--){
            if(dp[j] == -INF){
                continue;
            }
            dp[j + b[i]] = max(dp[j + b[i]], dp[j] + min(n, b[i]));
        }
    }

    int sum = 0;
    for(int i = 1; i <= n; i++){
        sum += a[i];
        if(a[i] < k){
            cout << "Impossible\n";
            return 0;
        }
    }

    int ans = INF;
    for(int i = sum; i < MAXS; i++){
        if(dp[i] >= n * k){
            ans = i - sum;
            break;
        }
    }

    if(ans == INF){
        cout << "Impossible\n";
    }else{
        cout << ans << '\n';
    }

    return 0;
}

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