Compilare: user.cpp: In function ‘int main()’: user.cpp:19:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(n*m==2) ^ user.cpp:10:15: warning: unused variable ‘ok’ [-Wunused-variable] int n,i,j,ok,nr,m; ^ user.cpp:10:18: warning: variable ‘nr’ set but not used [-Wunused-but-set-variable] int n,i,j,ok,nr,m; ^ user.cpp:13:21: warning: unused variable ‘inc’ [-Wunused-variable] int a1,b1,a2,b2,inc,sf,c1[100001],c2[100001],k1[8]={-1,0,1,-1,1,-1,0,1},k2[8]={-1,-1,-1,0,0,1,1,1}; ^ user.cpp:13:25: warning: unused variable ‘sf’ [-Wunused-variable] int a1,b1,a2,b2,inc,sf,c1[100001],c2[100001],k1[8]={-1,0,1,-1,1,-1,0,1},k2[8]={-1,-1,-1,0,0,1,1,1}; ^ user.cpp:13:28: warning: unused variable ‘c1’ [-Wunused-variable] int a1,b1,a2,b2,inc,sf,c1[100001],c2[100001],k1[8]={-1,0,1,-1,1,-1,0,1},k2[8]={-1,-1,-1,0,0,1,1,1}; ^ user.cpp:13:39: warning: unused variable ‘c2’ [-Wunused-variable] int a1,b1,a2,b2,inc,sf,c1[100001],c2[100001],k1[8]={-1,0,1,-1,1,-1,0,1},k2[8]={-1,-1,-1,0,0,1,1,1}; ^ user.cpp:13:50: warning: unused variable ‘k1’ [-Wunused-variable] int a1,b1,a2,b2,inc,sf,c1[100001],c2[100001],k1[8]={-1,0,1,-1,1,-1,0,1},k2[8]={-1,-1,-1,0,0,1,1,1}; ^ user.cpp:13:77: warning: unused variable ‘k2’ [-Wunused-variable] int a1,b1,a2,b2,inc,sf,c1[100001],c2[100001],k1[8]={-1,0,1,-1,1,-1,0,1},k2[8]={-1,-1,-1,0,0,1,1,1}; ^