#include <iostream>
using namespace std;
int main() {
int chose;
int eve;
cin>>chose;
switch(chose)
{
case 1: cout<<"welcome to ECE\n";
cout<<"Events:\nVLSI:1\nPCB:2\n";
cin>>eve;
switch(eve)
{
case 1:cout<<"venue:121\n";
break;
case 2:cout<<"venue:122\n";
break;
default:cout<<"invalid";
}
break;
case 2: cout<<"welcome to CSE\n";
cout<<"Events:\nCloud Computing:1\nHackathon:2\n";
cin>>eve;
switch(eve)
{
case 1:cout<<"venue:123\n";
break;
case 2:cout<<"venue:124\n";
break;
default:cout<<"invalid";
}
break;
case 3: cout<<"welcome to MECH\n";
cout<<"Events:\nAuto CAD Work Shop:1\nFluid mech:2\n";
cin>>eve;
switch(eve)
{
case 1:cout<<"venue:125\n";
break;
case 2:cout<<"venue:126\n";
break;
default:cout<<"invalid";
}
break;
default: cout<<"invalid";
}
return 0;
}
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