Compilare: main.cpp: In function 'int main()': main.cpp:148:17: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized] for(i=t;i<=s+1;i++) ~^~ main.cpp:114:47: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized] int n,x,y,l,i,j,c,lin,col,lprev,cprev,rez,t,s,prev=0; ^ main.cpp:145:15: warning: 'rez' may be used uninitialized in this function [-Wmaybe-uninitialized] out<<rez<<'\n'; ^~~~