Compilare: main.cpp: In function 'int main()': main.cpp:29:15: warning: unused variable 'cnt' [-Wunused-variable] long long cnt=0,cerinta,i,n,k,val,s=0,c=0; ^~~ main.cpp: In function 'void prim()': main.cpp:17:18: warning: iteration 1000007 invokes undefined behavior [-Waggressive-loop-optimizations] if(ciur[i]) ~~~~~~^ main.cpp:15:14: note: within this loop for(i=2;i<=9999983;++i) ~^~~~~~~~~ main.cpp:13:16: warning: iteration 1000007 invokes undefined behavior [-Waggressive-loop-optimizations] ciur[i]=1; ~~~~~~~^~ main.cpp:11:14: note: within this loop for(i=2;i<=9999983;++i) ~^~~~~~~~~