#include <iostream>
#include <vector>
#include <algorithm>
#include <functional>
#include <iterator>
#include <bitset>
#include <numeric>
#include <cmath>
std::vector<int> getIndexes(const std::vector<int> &rates) {
std::vector<int> idx(rates.size());
std::iota(idx.begin(), idx.end(), 0);
std::sort(idx.begin(), idx.end(),
[&rates](int i1, int i2) {return rates[i1] > rates[i2];});
return idx;
}
int main()
{
std::ios_base::sync_with_stdio(false);
int n;
std::cin>>n;
std::vector<int> rates(n,0);
for(int i=0;i<n;++i)
{
std::cin>>rates[i];
}
const auto indexes = getIndexes(rates);
// for(const auto& idx:indexes) std::cout<< idx<<" ";
int minIndex=n, maxIndex=0;
long long int sum =0;
for(int i =0 ;i<n;++i)
{
int X =i+1, el = std::floor(X*0.5);
minIndex = std::min(indexes[el], minIndex);
maxIndex = std::max(indexes[el], maxIndex);
if(maxIndex-minIndex+1 <= X)
{
// std::cout<<std::endl<<"X "<<X<<" minIndex "<<minIndex<<" "<<maxIndex<<std::endl;
int last =std::min(minIndex, n-X), first = std::max(0,maxIndex-X+1);
// std::cout<<"TYGRYS"<<first<<last<<std::endl;
sum +=last-first+1;
//std::cout<<sum<<std::endl;
}
}
std::cout<<2*n+1<<" "<<sum<<std::endl;
return 0;
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | #include <iostream> #include <vector> #include <algorithm> #include <functional> #include <iterator> #include <bitset> #include <numeric> #include <cmath> std::vector<int> getIndexes(const std::vector<int> &rates) { std::vector<int> idx(rates.size()); std::iota(idx.begin(), idx.end(), 0); std::sort(idx.begin(), idx.end(), [&rates](int i1, int i2) {return rates[i1] > rates[i2];}); return idx; } int main() { std::ios_base::sync_with_stdio(false); int n; std::cin>>n; std::vector<int> rates(n,0); for(int i=0;i<n;++i) { std::cin>>rates[i]; } const auto indexes = getIndexes(rates); // for(const auto& idx:indexes) std::cout<< idx<<" "; int minIndex=n, maxIndex=0; long long int sum =0; for(int i =0 ;i<n;++i) { int X =i+1, el = std::floor(X*0.5); minIndex = std::min(indexes[el], minIndex); maxIndex = std::max(indexes[el], maxIndex); if(maxIndex-minIndex+1 <= X) { // std::cout<<std::endl<<"X "<<X<<" minIndex "<<minIndex<<" "<<maxIndex<<std::endl; int last =std::min(minIndex, n-X), first = std::max(0,maxIndex-X+1); // std::cout<<"TYGRYS"<<first<<last<<std::endl; sum +=last-first+1; //std::cout<<sum<<std::endl; } } std::cout<<2*n+1<<" "<<sum<<std::endl; return 0; } |
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