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#include <vector> 
#include <algorithm> 
 
int getMinimumSeconds(std::vector<int>& fileSize) { 
    int n = fileSize.size(); 
    std::vector<std::pair<int, int>> filesWithIndices(n); 
    for (int i = 0; i < n; ++i) { 
        filesWithIndices[i] = {fileSize[i], i}; 
    } 
 
    // Sort by file size, then by original index to maintain stability 
    std::sort(filesWithIndices.begin(), filesWithIndices.end()); 
 
    // Map original indices to their positions in the sorted array 
    std::vector<int> sortedIndex(n); 
    for (int i = 0; i < n; ++i) { 
        sortedIndex[filesWithIndices[i].second] = i; 
    } 
 
    int maxShift = 0; 
    for (int i = 0; i < n; ++i) { 
        int shift = i - sortedIndex[i]; 
        if (shift > maxShift) { 
            maxShift = shift; 
        } 
    } 
 
    return maxShift; 
} 
 
int main() { 
    int n; 
    std::cin >> n; 
    std::vector<int> fileSize(n); 
    for (int i = 0; i < n; ++i) { 
        std::cin >> fileSize[i]; 
    } 
 
    int result = getMinimumSeconds(fileSize); 
    std::cout << result << std::endl; 
 
    return 0; 
}

#include <cmath>
#include <cstdlib>

bool isValidTriangle(int x1, int y1, int x2, int y2, int x3, int y3);
double distance(int x1, int y1, int x2, int y2);
bool isPointInTriangle(int x1, int y1, int x2, int y2, int x3, int y3, int xp, int yp);
double triangleArea(int x1, int y1, int x2, int y2, int x3, int y3);

int pointsBelong(int x1, int y1, int x2, int y2, int x3, int y3, int xp, int yp, int xq, int yq) {
    if (!isValidTriangle(x1, y1, x2, y2, x3, y3)) {
        return 0;
    }

    bool pBelongs = isPointInTriangle(x1, y1, x2, y2, x3, y3, xp, yp);
    bool qBelongs = isPointInTriangle(x1, y1, x2, y2, x3, y3, xq, yq);

    if (pBelongs && qBelongs) {
        return 3;
    } else if (pBelongs) {
        return 1;
    } else if (qBelongs) {
        return 2;
    } else {
        return 4;
    }
}

bool isValidTriangle(int x1, int y1, int x2, int y2, int x3, int y3) {
    double ab = distance(x1, y1, x2, y2);
    double bc = distance(x2, y2, x3, y3);
    double ac = distance(x1, y1, x3, y3);
    return (ab + bc > ac) && (bc + ac > ab) && (ac + ab > bc);
}

double distance(int x1, int y1, int x2, int y2) {
    return std::sqrt(std::pow(x2 - x1, 2) + std::pow(y2 - y1, 2));
}

bool isPointInTriangle(int x1, int y1, int x2, int y2, int x3, int y3, int xp, int yp) {
    double areaABC = triangleArea(x1, y1, x2, y2, x3, y3);
    double areaPAB = triangleArea(xp, yp, x1, y1, x2, y2);
    double areaPAC = triangleArea(xp, yp, x1, y1, x3, y3);
    double areaPBC = triangleArea(xp, yp, x2, y2, x3, y3);

    return std::abs((areaPAB + areaPAC + areaPBC) - areaABC) < 1e-9;
}

double triangleArea(int x1, int y1, int x2, int y2, int x3, int y3) {
    return std::abs(x1 * (y2 - y3) + x2 * (y3 - y1) + x3 * (y1 - y2)) / 2.0;
}

#include <bits/stdc++.h>  
long getTotalSteps(vector<int>& ht) { 
long ans=0,cnt=0; 
sort(ht.begin(),ht.end()); 
 
for(int i=0;i<ht.size();i++){ 
 
if(i<ht.size()-1&&ht[i]!=ht[i+1]){ 
 
cnt++; 
 
ans+=cnt; 
 
} 
else if(i!=ht.size()-1) ans+=cnt; 
 
 
} 
 
return ans; 
 
}