oj.uz

Submission #920978

# Submission time Handle Problem Language Result Execution time Memory
920978 2024-02-03T08:36:56 Z shoryu386 Kitchen (BOI19_kitchen) C++17
29 / 100
 95 ms 348 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
 
main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	
	int n, m, k; cin >> n >> m >> k;
	
	int buckets[n], balls[m];
	
	for (int x = 0; x < n; x++) cin >> buckets[x];
	for (int x = 0; x < m; x++) cin >> balls[x];
	
	#define IMP cout << "Impossible"; return 0;
	
	/*
	if (m == 1){
		//st1 pt 1
		if (k > 1){
			IMP;
		}
		
		int bucketsum = 0;
		for (int x = 0; x < n; x++){
			bucketsum += buckets[x];
		}
		
		if (bucketsum > balls[0]){
			IMP;
		}
		
		cout << balls[0] - bucketsum;
	}
	else if (m == 2){
		//st1 pt2
		if (k > 2){
			IMP;
		}
		else if (k == 2){
			
		}
		else{
			
		}
	}
	*/
	
	bool dead = false;
	for (int x = 0; x < n; x++){
		if (buckets[x] < k){
			dead = true;
		}
	}

	if (dead) {IMP;}
	
	if (m <= 15){
		
		int ans = LLONG_MAX/20;
		sort(balls, balls+m); 
		
		for (int bm = 1; bm < (1LL<<m); bm++){
			
			
			//if (__builtin_popcountll(bm) < k){
			//	continue;
			//}
			
			vector<int> chefs;
			
			for (int x = 0; x < m; x++){
				if (bm & (1<<x)){
					chefs.push_back(balls[x]);
				}
			}
			
			
			int chefsum = 0, bucketSum = 0;
			for (int x = 0; x < chefs.size(); x++) chefsum += chefs[x];
			for (int x = 0; x < n; x++) bucketSum += buckets[x]; 
			
			//can we support this?
			int needed[n]; for (int x = 0; x < n; x++) needed[x] = k;
			
			for (int x = ((int)chefs.size()-1); x > -1; x--){
				//for each chef, try and distribute
				for (int y = 0; y < n; y++){
					if (chefs[x] == 0){
						break;
					}
					if (needed[y] > 0) needed[y]--, chefs[x]--;
				}
			}
			
			bool works = true;
			for (int x = 0; x < n; x++){
				if (needed[x] != 0){
					works = false;
				}
			}
			
			if (works && chefsum >= bucketSum){
				ans = min(ans, chefsum - bucketSum);
			}
		}
		
		if (ans == LLONG_MAX/20) {IMP;}
		else cout << ans;
	}
	else if (k == 1){
		//subtask 3
		#define BSMAX 100000
		//300^2
		
		bitset<BSMAX> bs;
		bs[0] = 1;
		
		for (int x = 0; x < m; x++){
			bs |= (bs << balls[x]);
		}
		
		int bucketsum = 0;
		for (int x = 0; x < n; x++){
			bucketsum += buckets[x];
		}
		
		int ans = -1;
		for (int x = bucketsum; x < BSMAX; x++){
			if (bs[x]){
				ans = x-bucketsum;
				break;
			}
		}
		
		if (ans == -1) cout << "Impossible";
		else cout << ans;
	}
}

Compilation message

kitchen.cpp:6:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    6 | main(){
      | ^~~~
kitchen.cpp: In function 'int main()':
kitchen.cpp:81:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |    for (int x = 0; x < chefs.size(); x++) chefsum += chefs[x];
      |                    ~~^~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 8 ms 348 KB Output is correct
10 Correct 7 ms 348 KB Output is correct
11 Correct 10 ms 348 KB Output is correct
12 Correct 12 ms 344 KB Output is correct
13 Incorrect 95 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 8 ms 348 KB Output is correct
10 Correct 7 ms 348 KB Output is correct
11 Correct 10 ms 348 KB Output is correct
12 Correct 12 ms 344 KB Output is correct
13 Incorrect 95 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -