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Thank you. I solved my problem now although why I got Presentation Error is still mistery for me.

I don't understand why I got runtime error for my program. Here it is:
[cpp]
#include <iostream>
#include <string>
using namespace std;

class skylines {
unsigned int left[5000];
unsigned int height[5000];
unsigned int right[5000];
unsigned int most;
static unsigned int i;
public:
skylines ...