Submission #584334

#	Time	Username	Problem	Language	Result	Execution time	Memory
584334		amunduzbaev	Olympiads (BOI19_olympiads)	C++17	44 / 100	488 ms	7124 KiB

olympiads

#include "bits/stdc++.h"
using namespace std;
 
#define ar array
typedef int64_t ll;
//~ #define int ll

const int M = 6e6 + 5;
const int N = 505;
const int K = 7;
ar<int, K> og[N];
vector<int> a[N], tot;
int n, p[N], sum[M], k;

void go(int i, int c, ar<int, K> a){
	if(c == k){
		sum[a[0]]++;
		return;
	}
	
	for(int j=i;j<n;j++){
		ar<int, K> b = a;
		for(int k=1;k<K;k++){
			if(og[p[j]][k] > b[k]){
				b[0] += (og[p[j]][k] - b[k]);
				b[k] = og[p[j]][k];
			}
		}
		
		go(j + 1, c + 1, b);
	}
}

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int c; cin>>n>>k>>c;
	for(int i=0;i<n;i++){
		for(int j=1;j<=k;j++) cin>>og[i][j], a[i].push_back(og[i][j]);
		sort(a[i].rbegin(), a[i].rend());
		a[i].push_back(i);
	}
	
	sort(a, a + n);
	reverse(a, a + n);
	if(k >= 3) n = min(n, 50);
	for(int i=0;i<n;i++) p[i] = a[i].back();
	go(0, 0, {});
	for(int i=M-1;~i;i--){
		//~ if(sum[i]) cout<<sum[i]<<" "<<i<<"\n";
		if(c <= sum[i]){
			cout<<i<<"\n";
			return 0;
		} c -= sum[i];
	}
	
	assert(false);
}

• Subtask 1: 13 / 13
• Subtask 2: 31 / 31
• Subtask 3: 0 / 24
• Subtask 4: 0 / 32