zad1.cpp

#include <iostream>
using namespace std;

int main(int argc, const char * argv[]) {
    int N, t, a,b,c;
    int Nmax = 1000000; // po uslovie N ne moje da e poveche ot tova chislo
    int tMax = 10000; // vs chislo sled N ne moje da e poveche ot tova
    
    cin >> N;
    cout << "N is: " << N << "\n";
    
    if (N > Nmax) {
        cout << "N is too big";
        return 1;
    }
    
    for (int i = 0; i < N; i++) {
        cin >> t;
        cout << "t is: " << t << ", i is: " << i << "\n";
        if (t > tMax) {
            cout << "too big number passed, max number alloed is " << tMax;
        }
        
        if (i == 0) {
            a = t;
            cout << "a is: " << a << ", i is: " << i <<"\n";
            continue;
        }
        
        if(i == 1) {
            b = t;
            cout << "b is: " << b <<", i is: " << i << "\n";
            continue;
        }
        
        if (i == 2) {
            c = t;
        } else {
            a = b;
            b = c;
            c = t;
        }
        cout << "a is: " << a << ", i is: " << i <<"\n";
        cout << "b is: " << b << ", i is: " << i <<"\n";
        cout << "c is: " << c << ", i is: " << i <<"\n";
        
        if ((a >= b && c >= b) || (b > a && b > c)) {
            continue;
        } else {
            cout << "No\n";
            return 0;
        }
    }
    
    cout << "Yes\n";
    return 0;
}