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Codechef Starters 53 (Div- 4) Solution

1.Car Trip

C++ solution 

#include<iostream>

#include<bits/stdc++.h>

using namespace std;


int main()

{

long long int t;

cin>>t;

while(t–){

long long int x;

cin>>x;

if(x<300)

x=300;

cout<<x*10<<endl;

}

return 0;

}


 


2.Greater Average


Solution in C++:


#include<iostream>

#include<bits/stdc++.h>

using namespace std;


int main()

{

long long int t;

cin>>t;

while(t–){

long long a,b,c;

cin>>a>>b>>c;

double av;

av = (a+b)*1.0/2;

if(av>c)

cout<<“YES”<<endl;

else

cout<<“NO”<<endl;

}

return 0;

}


 


3.Solution  in C++:


#include<iostream>

#include<bits/stdc++.h>

using namespace std;


int main()

{

long long int t;

cin>>t;

while(t–){

long long w,x,y,z;

cin>>w>>x>>y>>z;

if(w==x)

cout<<“yes”<<endl;

else if(w==y)

cout<<“yes”<<endl;

else if(w==z)

cout<<“yes”<<endl;

else if(w==(x+y))

cout<<“yes”<<endl;

else if(w==(y+z))

cout<<“yes”<<endl;

else if(w==(x+z))

cout<<“yes”<<endl;

else if(w==(x+y+z))

cout<<“yes”<<endl;

else

cout<<“no”<<endl;

}

return 0;

}


 


4.



4. Odd Pairs

Solution in C++:

#include<iostream>
#include<bits/stdc++.h>
using namespace std;

int main()
{
long long int t;
cin>>t;
while(t–){
long long int n,odd,even;
cin>>n;
even= n/2;
odd = n-even;
cout<<2*even*odd<<endl;
}
return 0;
}

 

5. Make A and B equal

Solution in C++:

#include<iostream>
#include<bits/stdc++.h>
using namespace std;

int main()
{
long long int t;
cin>>t;
while(t–){
long long int n,i,sum=0,x,c,mx=0;
cin>>n;
vector<long long int> v;
for(i=0;i<n;i++){
cin>>x;
v.push_back(x);
}
for(i=0;i<n;i++){
cin>>x;
c=v[i]-x;
sum=sum+v[i]-x;
if(c>0)
mx=mx+c;
}
if(sum==0)
cout<<mx<<endl;
else
cout<<-1<<endl;
}
return 0;
}

 Solved by sujan prodhan..... 



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