Submission #570448

#	Time	Username	Problem	Language	Result	Execution time	Memory
570448		cpp219	Kitchen (BOI19_kitchen)	C++17	100 / 100	437 ms	115912 KiB

kitchen

#include<bits/stdc++.h>
#define ll int
#define ld long double
#define fs first
#define sc second
#define debug(y) cout<<y,exit(0)
using namespace std;
typedef pair<ll,ll> LL;
const ll N = 300 + 9;
const ll inf = 1e9 + 7;

ll n,m,k,a[N],dp[N][N*N],b[N],ans = inf,sum;

void endgame(){
    cout<<"Impossible"; exit(0);
}

ll f(ll pos,ll total){
    if (!pos && total) return -inf;
    if (!total || !pos) return 0;
    ll &res = dp[pos][total];
    if (res != -1) return res;
    res = f(pos - 1,total);
    if (total >= b[pos]) res = max(res,f(pos - 1,total - b[pos]) + min(b[pos],n));
    return res;
}

int main(){
    ios_base::sync_with_stdio(NULL); cin.tie(0); cout.tie(0);
    #define task "test"
    if (fopen(task".inp","r")){
        freopen(task".inp","r",stdin);
        //freopen(task".out","w",stdout);
    }
    cin>>n>>m>>k;
    for (ll i = 1;i <= n;i++) cin>>a[i],sum += a[i];
    for (ll i = 1;i <= m;i++) cin>>b[i];
    if (*min_element(a + 1,a + n + 1) < k) endgame();
    memset(dp,-1,sizeof(dp)); //debug(f(m,sum));
    for (ll i = sum;i < N*N;i++)
        if (f(m,i) >= n*k) ans = min(ans,i);
    if (ans == inf) endgame();
    debug(ans - sum);
}
/// be confident

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:32:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

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