Compilare: main.cpp: In function 'int main()': main.cpp:57:21: warning: 'a1' may be used uninitialized [-Wmaybe-uninitialized] 57 | for (mask=1;mask<a1;mask++) | ~~~~^~~ main.cpp:8:31: note: 'a1' was declared here 8 | long long n,m,k,x,i,j,c,y,a1,a2,min1,mask,a; | ^~