Compilare: main.cpp: In function 'int main()': main.cpp:22:24: warning: unused variable 'sol2' [-Wunused-variable] int n,a,b,i,sol1=0,sol2=0; ^~~~ main.cpp:20:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("echilateral.in", "r", stdin); ^ main.cpp:21:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("echilateral.out", "w", stdout); ^ main.cpp:23:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &a, &b); ^