I didn't understood where my code has gone wrong

#1

#include
using namespace std;
int main() {
int n, prev, flag = 0;
cin>> n>>prev;
for (int i = 1; i < n; i++) {
cin>> i;
if (i > prev){
flag = 1;
}
if (flag == 1 && i < prev)
flag = 0;
prev = i;
}
if (flag == 1)
cout<<“true”;
else
cout<<“false”;
return 0;
}
my code for increasing decreasing sequence problem

#2

#include using namespace std; int main() { int n, prev, flag = 0, i, a = 0; cin>> n>>prev; for (int j = 1; j < n; j++) { a = 1; cin>> i; if (i > prev){ flag = 1; } else if (flag == 1 && i < prev) flag = 0; prev = i; } if (flag == 1 || a == 0) cout<<“true”; else cout<<“false”; return 0; }

#3

@coe17b030
Your code for testcases like this .
Input :
9
3 2 1 2 3 2 1 2 3

Expected Output :
false

Your Output :
true

#4

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