Eroare de compilare: user.cpp:1:21: warning: extra tokens at end of #include directive [enabled by default] #include <iostream> #include <fstream> using namespace std; long long v[50000],w[50000],n,nr,nrmax; ifstream fi("int.in"); ofstream fo("int.out"); void lung(long long x,long long y,long long nr) { for (long long i=1;i<=n;i++) if (v[i]>=y) lung(x,w[i],nr+1); else if (w[i]<=x) lung(v[i],y,nr+1); if (nr>nrmax) nrmax=nr; } int main() { fi>>n; for (long long i=1;i<=n;i++) fi>>v[i]>>w[i]; for (long long i=1;i<=n;i++) { nr=1; lung(v[i],w[i],nr); } fo<<nrmax; return 0; } ^ user.cpp:1:317: warning: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wliteral-suffix] #include <iostream> #include <fstream> using namespace std; long long v[50000],w[50000],n,nr,nrmax; ifstream fi("int.in"); ofstream fo("int.out"); void lung(long long x,long long y,long long nr) { for (long long i=1;i<=n;i++) if (v[i]>=y) lung(x,w[i],nr+1); else if (w[i]<=x) lung(v[i],y,nr+1); if (nr>nrmax) nrmax=nr; } int main() { fi>>n; for (long long i=1;i<=n;i++) fi>>v[i]>>w[i]; for (long long i=1;i<=n;i++) { nr=1; lung(v[i],w[i],nr); } fo<<nrmax; return 0; } ^ /usr/lib/crt1.o: In function `_start': (.text+0x18): undefined reference to `main' collect2: error: ld returned 1 exit status