Submission #82223

#	Time	Username	Problem	Language	Result	Execution time	Memory
82223		thiago4532	Doktor (COCI17_doktor)	C++17	100 / 100	297 ms	48184 KiB

doktor

#include <bits/stdc++.h>

using namespace std;
const int maxn = 2*500010;
int v[maxn], pref[maxn], n;
vector<int> c[maxn];

inline int qq(int a, int b){
	return pref[b] - pref[a-1];
}

int main(){
	ios::sync_with_stdio(false), cin.tie(0);
	cin >> n;
	
	for(int i=1;i<=n;i++){
		cin >> v[i<<1];
		v[i<<1] *= 2;
		
		int centro = (v[(i<<1)] + (i<<1))/2;
		c[centro].push_back(abs(centro - (i<<1)));
	}

	for(int i=1;i<=n;i++)
		if(v[i<<1] == (i<<1)) pref[i<<1] = 1;
	for(int i=1;i<=2*n;i++)
		pref[i] += pref[i-1];

	int ans=0, a, b;
	for(int i=1;i<=2*n;i++){
		sort(c[i].begin(), c[i].end());
		for(int j=0;j<c[i].size();j++){
			int qtd = j + 1 - qq(i-c[i][j], i+c[i][j]) + (!(i&1) && v[i] == i);

			if(qtd > ans){
				ans = qtd;
				a = i-c[i][j];
				b = i+c[i][j];
			}
		}
	}

	cout << v[a]/2 << " " << v[b]/2 << "\n";
	return 0;
}

Compilation message (stderr)

doktor.cpp: In function 'int main()':
doktor.cpp:32:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<c[i].size();j++){
               ~^~~~~~~~~~~~
doktor.cpp:43:30: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout << v[a]/2 << " " << v[b]/2 << "\n";
                           ~~~^
doktor.cpp:43:13: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout << v[a]/2 << " " << v[b]/2 << "\n";
          ~~~^

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10