#include <iostream>
using namespace std;
int main() {
int x = 5, y = 5;
cout << "start: " << x << "," << y << endl;
if(1) {
int x = 10;
y = 7;
cout << "nested: " << x << "," << y << endl;
}
cout << "end: " << x << "," << y << endl;
}
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