Compilare: main.cpp: In function 'int main()': main.cpp:15:13: warning: unused variable 'ct' [-Wunused-variable] 15 | int i,j,ct=1; | ^~ main.cpp:17:30: warning: iteration 650001 invokes undefined behavior [-Waggressive-loop-optimizations] 17 | for(i=3; i<=N; i+=2) c[i]=1; | ~~~~^~ main.cpp:17:15: note: within this loop 17 | for(i=3; i<=N; i+=2) c[i]=1; | ^ main.cpp:23:30: warning: iteration 500002 invokes undefined behavior [-Waggressive-loop-optimizations] 23 | for(i=2; i<=N; i+=2) d[i]=1; | ~~~~^~ main.cpp:23:15: note: within this loop 23 | for(i=2; i<=N; i+=2) d[i]=1; | ^ main.cpp:25:15: warning: iteration 1300002 invokes undefined behavior [-Waggressive-loop-optimizations] 25 | if(c[i]==1) | ~~~^ main.cpp:24:15: note: within this loop 24 | for(i=3; i<=N; ++i) | ^ main.cpp:30:15: warning: iteration 1000003 invokes undefined behavior [-Waggressive-loop-optimizations] 30 | if(d[i]<=7) | ~~~^ main.cpp:29:15: note: within this loop 29 | for(i=2; i<=N; ++i) | ^ main.cpp:50:30: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] 50 | fout<<a[y][poz]<<"\n"; | ^~~~