Compilare: main.cpp: In function 'int main()': main.cpp:25:21: warning: unused variable 'a' [-Wunused-variable] 25 | int n, i, j, sol, a, b, cnt, gcd, nfractii; | ^ main.cpp:25:24: warning: unused variable 'b' [-Wunused-variable] 25 | int n, i, j, sol, a, b, cnt, gcd, nfractii; | ^ main.cpp:51:7: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] 51 | sol += cnt * (cnt - 1) / 2; | ~~~~^~~~~~~~~~~~~~~~~~~~~~