Compilare: main.cpp: In function 'int main()': main.cpp:9:15: warning: unused variable 'n' [-Wunused-variable] 9 | long long c,n,s=0,i, a, b; | ^ main.cpp:9:21: warning: unused variable 'i' [-Wunused-variable] 9 | long long c,n,s=0,i, a, b; | ^ main.cpp:24:7: warning: 'c' may be used uninitialized [-Wmaybe-uninitialized] 24 | s=(c*a)%MOD; | ~~^~~ main.cpp:9:13: note: 'c' was declared here 9 | long long c,n,s=0,i, a, b; | ^