Compilare: user.cpp: In function ‘void solve()’: user.cpp:67:18: warning: unused variable ‘sum1’ [-Wunused-variable] int nr1 = 0, sum1 = 0; ^ user.cpp:70:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(F, "%d", &N); ^ user.cpp:72:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(F, "%d", &x); ^ user.cpp: In function ‘int main()’: user.cpp:107:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(F, "%d", &T); ^