Compilare: main.cpp: In function 'int main()': main.cpp:29:9: warning: unused variable 'm' [-Wunused-variable] 29 | int m,t,i,j; | ^ main.cpp: In function 'void sieve()': main.cpp:13:15: warning: iteration 50001 invokes undefined behavior [-Waggressive-loop-optimizations] 13 | phi[i]=i; | ~~~~~~^~ main.cpp:12:16: note: within this loop 12 | for (i=1; i<=dim; i++) | ^ main.cpp:16:18: warning: iteration 50000 invokes undefined behavior [-Waggressive-loop-optimizations] 16 | if (phi[i]==i) | ~~~~~^ main.cpp:15:16: note: within this loop 15 | for (i=2; i<=dim; i++) | ^ main.cpp:23:14: warning: iteration 50000 invokes undefined behavior [-Waggressive-loop-optimizations] 23 | phi[i]+=phi[i-1]; | ~~~~~^ main.cpp:22:16: note: within this loop 22 | for (i=2; i<=dim; i++) | ^