Compilare: user.cpp: In function ‘int Calc(int)’: user.cpp:26:28: warning: unused variable ‘xc’ [-Wunused-variable] int pr, ul, c[100001], xc, nr=0, vizl[100001]={0}; ^ user.cpp:26:32: warning: unused variable ‘nr’ [-Wunused-variable] int pr, ul, c[100001], xc, nr=0, vizl[100001]={0}; ^ user.cpp: In function ‘void Sol()’: user.cpp:60:24: warning: unused variable ‘val2’ [-Wunused-variable] int i, v, w, val1, val2, k; ^ user.cpp:62:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d%d", &n, &val[1], &val[2], &val[3]); ^ user.cpp:68:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &v, &w); ^ user.cpp: In function ‘int main()’: user.cpp:110:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &T); ^