View Compilation Error

0_0_36798160_23351.cpp: In function 'void solve(std::vector<int>)':
0_0_36798160_23351.cpp:138:71: error: expected ':' before ')' token
  cout << "Case " << ++test_case << ": " << (s == INF ? *values.begin()) << " to " << (t == INF ? *values.begin()) << endl;
                                                                       ^
0_0_36798160_23351.cpp:138:71: error: expected primary-expression before ')' token
0_0_36798160_23351.cpp:138:113: error: expected ':' before ')' token
  cout << "Case " << ++test_case << ": " << (s == INF ? *values.begin()) << " to " << (t == INF ? *values.begin()) << endl;
                                                                                                                 ^
0_0_36798160_23351.cpp:138:113: error: expected primary-expression before ')' token