View Compilation Error

0_0_22439804_3871.cpp: In function 'void Solve(int)':
0_0_22439804_3871.cpp:152:12: error: invalid conversion from 'const char*' to 'int' [-fpermissive]
 putchar(" ");
            ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstdio:42:0,
                 from 0_0_22439804_3871.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:503:15: note: initializing argument 1 of 'int putchar(int)'
   int __cdecl putchar(int _Ch);
               ^