View Compilation Error

0_0_25593607_26343.cpp: In function 'int main()':
0_0_25593607_26343.cpp:29:9: error: 'll' was not declared in this scope
         ll ans = 0;
         ^
0_0_25593607_26343.cpp:31:22: error: expected initializer before '<=' token
         for(int i=1,i<=n;i++)
                      ^
0_0_25593607_26343.cpp:31:22: error: expected ';' before '<=' token
0_0_25593607_26343.cpp:31:22: error: expected primary-expression before '<=' token
0_0_25593607_26343.cpp:37:25: error: expected initializer before '<' token
            for(int j=0,j<len;j++)
                         ^
0_0_25593607_26343.cpp:37:25: error: expected ';' before '<' token
0_0_25593607_26343.cpp:37:25: error: expected primary-expression before '<' token
0_0_25593607_26343.cpp:64:22: error: expected initializer before '<=' token
         for(int i=1,i<=n;i++)        {
                      ^
0_0_25593607_26343.cpp:64:22: error: expected ';' before '<=' token
0_0_25593607_26343.cpp:64:22: error: expected primary-expression before '<=' token