geppetto.cpp: In function 'void go(int)':
geppetto.cpp:15:28: error: 'size' was not declared in this scope
for(int i = 0; i < size;i++){
^~~~
geppetto.cpp:15:28: note: suggested alternative: 'dysize'
for(int i = 0; i < size;i++){
^~~~
dysize
geppetto.cpp: In function 'int main()':
geppetto.cpp:36:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&m);
~~~~~^~~~~~~~~~~~~~
geppetto.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&a,&b);
~~~~~^~~~~~~~~~~~~~