View Compilation Error

0_0_18551341_25915.cpp: In function 'int main()':
0_0_18551341_25915.cpp:88:20: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
             puts(-1);
                    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/locale.h:12:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/clocale:42,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:40,
                 from 0_0_18551341_25915.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:504:15: note: initializing argument 1 of 'int puts(const char*)'
   int __cdecl puts(const char *_Str);
               ^