can you give me the algorihtm how to solve this problem. i am not getting the idea how to solve it.
Pythagors triplet
Hi @ankita_10,
there is a direct formula to find pythagors triplet, which is
if(n<3){
cout<<"-1";
}
else if(!(n&1)){
long long a=n;
long long b=(n/2)(n/2)-1;
long long c=(n/2)(n/2)+1;
}
else{
long long a=2*((n+1)/2)((n-1)/2);
long long b=((n+1)/2)((n+1)/2)+((n-1)/2)((n-1)/2);
long long c=((n+1)/2)((n+1)/2)-((n-1)/2)*((n-1)/2);
}
pls refer to dis.
If u still hv any doubt, feel free to post them here.
errors are coming. the code is :- #include<bits/stdc++.h> using namespace std; int main() { long long int n = 3; cin>>n; if(n<3){ cout<<"-1"; } else if(!(n&1)){ long long a=n; long long b=(n/2)(n/2)-1; long long c=(n/2)(n/2)+1; } else{ long long a=2*((n+1)/2)((n-1)/2); long long b=((n+1)/2)((n+1)/2)+((n-1)/2)((n-1)/2); long long c=((n+1)/2)((n+1)/2)-((n-1)/2)((n-1)/2); } cout<<a<<b<<c<<" "; return 0; } THE ERRORS ARE :- Compiling failed with exitcode 1, compiler output: prog.cpp: In function ‘int main()’: prog.cpp:11:22: error: expression cannot be used as a function long long b=(n/2)(n/2)-1; ^ prog.cpp:12:22: error: expression cannot be used as a function long long c=(n/2)(n/2)+1; ^ prog.cpp:10:11: warning: unused variable ‘a’ [-Wunused-variable] long long a=n; ^ prog.cpp:11:11: warning: unused variable ‘b’ [-Wunused-variable] long long b=(n/2)(n/2)-1; ^ prog.cpp:12:11: warning: unused variable ‘c’ [-Wunused-variable] long long c=(n/2)(n/2)+1; ^ prog.cpp:15:32: error: expression cannot be used as a function long long a=2((n+1)/2)((n-1)/2); ^ prog.cpp:16:30: error: expression cannot be used as a function long long b=((n+1)/2)((n+1)/2)+((n-1)/2)((n-1)/2); ^ prog.cpp:16:49: error: expression cannot be used as a function long long b=((n+1)/2)((n+1)/2)+((n-1)/2)((n-1)/2); ^ prog.cpp:17:30: error: expression cannot be used as a function long long c=((n+1)/2)((n+1)/2)-((n-1)/2)((n-1)/2); ^ prog.cpp:15:11: warning: unused variable ‘a’ [-Wunused-variable] long long a=2((n+1)/2)((n-1)/2); ^ prog.cpp:16:11: warning: unused variable ‘b’ [-Wunused-variable] long long b=((n+1)/2)((n+1)/2)+((n-1)/2)((n-1)/2); ^ prog.cpp:17:11: warning: unused variable ‘c’ [-Wunused-variable] long long c=((n+1)/2)((n+1)/2)-((n-1)/2)*((n-1)/2); ^ prog.cpp:19:7: error: ‘a’ was not declared in this scope cout<<a<<b<<c<<" “; ^ prog.cpp:19:10: error: ‘b’ was not declared in this scope cout<<a<<b<<c<<” “; ^ prog.cpp:19:13: error: ‘c’ was not declared in this scope cout<<a<<b<<c<<” "; ^
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