Compilare: main.cpp: In function 'int calc(int, int, int)': main.cpp:71:20: warning: unused variable 'si' [-Wunused-variable] 71 | int i, ans, pos, si; | ^~ main.cpp: In function 'int main()': main.cpp:93:33: warning: unused variable 'ct' [-Wunused-variable] 93 | int n, i, j, t, q, a, b, sum, ct, minn, pos, k, sa, sb; | ^~ main.cpp: In function 'int calc(int, int, int)': main.cpp:76:18: warning: 'i' may be used uninitialized in this function [-Wmaybe-uninitialized] 76 | if ( m[i][pos] <= elem ) | ~~~~~~~~^