src.cpp: In function 'int main()':
src.cpp:8:37: error: size of array 'a' is too large
long long int a[1000000][1000000];
^
src.cpp:12:17: error: 'a' was not declared in this scope
cin>>a[i][j];
^
src.cpp:18:13: error: 'a' was not declared in this scope
c=c+a[i][j];
^
src.cpp:23:13: error: 'a' was not declared in this scope
s=s+a[i][n-k];
^