Compilare: main.cpp: In function 'int main()': main.cpp:11:18: warning: unused variable 'j' [-Wunused-variable] int n, m, i, j, aux, k = 0, d = 0, x, mn, c1 = 0, c2 = 0; ^ main.cpp:11:21: warning: unused variable 'aux' [-Wunused-variable] int n, m, i, j, aux, k = 0, d = 0, x, mn, c1 = 0, c2 = 0; ^~~ main.cpp:11:33: warning: unused variable 'd' [-Wunused-variable] int n, m, i, j, aux, k = 0, d = 0, x, mn, c1 = 0, c2 = 0; ^ main.cpp:11:40: warning: unused variable 'x' [-Wunused-variable] int n, m, i, j, aux, k = 0, d = 0, x, mn, c1 = 0, c2 = 0; ^ main.cpp:20:16: warning: iteration 50000 invokes undefined behavior [-Waggressive-loop-optimizations] if(fr[i] == 2) ~~~~^ main.cpp:19:18: note: within this loop for(i = 1; i <= 50001; i++) ~~^~~~~~~~