Compilare: main.cpp: In function 'int main()': main.cpp:11:49: warning: unused variable 'poz1a' [-Wunused-variable] int c1[50001], c2[50001], ct1 = 0, ct2 = 0, poz1a, poz1b, poz2a, poz2b, i, j, n, m, a[28001], b[28001], vmin = 999999999, vmax = 0, N, M; ^~~~~ main.cpp:11:56: warning: unused variable 'poz1b' [-Wunused-variable] int c1[50001], c2[50001], ct1 = 0, ct2 = 0, poz1a, poz1b, poz2a, poz2b, i, j, n, m, a[28001], b[28001], vmin = 999999999, vmax = 0, N, M; ^~~~~ main.cpp:11:63: warning: unused variable 'poz2a' [-Wunused-variable] int c1[50001], c2[50001], ct1 = 0, ct2 = 0, poz1a, poz1b, poz2a, poz2b, i, j, n, m, a[28001], b[28001], vmin = 999999999, vmax = 0, N, M; ^~~~~ main.cpp:11:70: warning: unused variable 'poz2b' [-Wunused-variable] int c1[50001], c2[50001], ct1 = 0, ct2 = 0, poz1a, poz1b, poz2a, poz2b, i, j, n, m, a[28001], b[28001], vmin = 999999999, vmax = 0, N, M; ^~~~~ main.cpp:11:80: warning: unused variable 'j' [-Wunused-variable] int c1[50001], c2[50001], ct1 = 0, ct2 = 0, poz1a, poz1b, poz2a, poz2b, i, j, n, m, a[28001], b[28001], vmin = 999999999, vmax = 0, N, M; ^ main.cpp:28:16: warning: iteration 50000 invokes undefined behavior [-Waggressive-loop-optimizations] if(c1[i] && c2[i]) ~~~~^ main.cpp:26:18: note: within this loop for(i = 1; i <= 50002; i++) ~~^~~~~~~~