Submission #125008

#	Time	Username	Problem	Language	Result	Execution time	Memory
125008		gs14004	Kitchen (BOI19_kitchen)	C++17	100 / 100	32 ms	800 KiB

kitchen

#include <bits/stdc++.h>
using namespace std;
const int MAXN = 100005;
using lint = long long;
using pi = pair<lint, int>;

int n, m, k;
int a[MAXN], b[MAXN], dp[MAXN];

int main(){
	cin >> n >> m >> k;
	for(int i=1; i<=n; i++){
		cin >> a[i];
		if(a[i] < k){
			puts("Impossible");
			return 0;
		}
	}
	for(int i=1; i<=m; i++) cin >> b[i];
	fill(dp + 1, dp + MAXN, -1e9);
	dp[0] = 0;
	for(int i=1; i<=m; i++){
		for(int j=MAXN-1; j>=b[i]; j--){
			dp[j] = max(dp[j-b[i]] + min(b[i], n), dp[j]);
		}
	}
	int accm = accumulate(a + 1, a + n + 1, 0);
	int ret = 1e9;
	for(int i = accm; i < MAXN; i++){
		if(dp[i] >= n * k){
			cout << i - accm << endl;
			return 0;
		}
	}
	puts("Impossible");
}

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:28:6: warning: unused variable 'ret' [-Wunused-variable]
  int ret = 1e9;
      ^~~

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