View Compilation Error

0_0_21951684_29245.cpp: In function 'int main()':
0_0_21951684_29245.cpp:69:31: error: expected primary-expression before ']' token
         cs=cs*n*(n+1)*m*(m+1);]
                               ^
0_0_21951684_29245.cpp:71:9: error: 'ms' was not declared in this scope
         ms=ms*4*ans;
         ^