[BUG] OLE doesn't seem right

[uier]

Describe the bug
when submit the following code, get weird OLE result, please check it out.

To Reproduce
source code:

#include <iostream>
using namespace std;
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    for ( int i=0; i<1e6; ++i ) {
        cout << "Hello, world\n";
    }
    return 0;
}

Current Behavior
get Output Limit Exceed

Possible Solution
inspect the calculation of output

Screenshots

Desktop (please complete the following information):

• OS: Ubuntu
• Browser Firefox Latest