Compilare: user.cpp: In function ‘int main()’: user.cpp:38:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<=n; i++) ^ user.cpp:55:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<=n; i++) ^ user.cpp:75:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=2*n+2*n0-2; i++) ^ user.cpp:98:68: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[nxt1].cate>1 && v[nxt1].max2+v2[nxt2].max2-d0>act) ^ user.cpp:100:68: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v2[nxt2].cate>1 && v[nxt1].max2+v2[nxt2].max2-d>act) ^ user.cpp:103:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(rez2<act) ^ user.cpp:23:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%lld%lld%lld",&x,&d,&n); ^ user.cpp:48:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%lld%lld%lld",&x,&d,&n); ^