View Compilation Error

0_0_35627013_15450.cpp: In function 'int main()':
0_0_35627013_15450.cpp:17:34: error: expected primary-expression before '<<' token
             cout<<"Case #"<<sum<<<<": Yes\n";
                                  ^
0_0_35627013_15450.cpp:33:38: error: expected primary-expression before '<<' token
                 cout<<"Case #"<<sum<<<<": Yes\n";
                                      ^
0_0_35627013_15450.cpp:37:38: error: expected primary-expression before '<<' token
                 cout<<"Case #"<<sum<<<<": No\n";
                                      ^
0_0_35627013_15450.cpp:54:38: error: expected primary-expression before '<<' token
                 cout<<"Case #"<<sum<<<<": Yes\n";
                                      ^
0_0_35627013_15450.cpp:58:38: error: expected primary-expression before '<<' token
                 cout<<"Case #"<<sum<<<<": No\n";
                                      ^
0_0_35627013_15450.cpp:63:34: error: expected primary-expression before '<<' token
             cout<<"Case #"<<sum<<<<": No\n";
                                  ^