Compilare: user.cpp: In function ‘int A()’: user.cpp:6:22: warning: unused variable ‘x’ [-Wunused-variable] int i,j,o,d[201],x; ^ user.cpp: In function ‘int main()’: user.cpp:19:24: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:19:24: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:19:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:21:63: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%f",&i,&l,&k),g[i][w[i]++]=l,c[i][l]=log(k); ^