0pts求助

#include <bits/stdc++.h>
using namespace std;

#define _ return 
#define __ ,
#define ___ ;
#define ____ [
#define _____ ]
#define ______ {
#define _______ }
#define ________ int
#define _________ for
#define __________ (
#define ___________ )
#define ____________ cin
#define _____________ cout
#define ______________ >>
#define _______________ puts
#define ________________ ios::sync_with_stdio

const  ________  _________________ = 2e3+10 ___ 
const  ________  __________________ = 6e3+10 ___ 
 ________  ___________________,____________________,_____________________ ____ _________________ _____  __ ______________________ ____ _________________ _____  __ _______________________ ____ _________________ _____  ___ 
struct edge  ______ 
	 ________  ________________________ __ _________________________ __ __________________________ ___ 
 _______  edge ____ __________________ _____  ___ 
 ________  head ____ _________________ _____  __ tot ___ 
queue< ________ > Q ___ 

void init __________  ___________   ______ 
	 _________  __________  ________  i=0 ___  i< __________________ ___  i++ ___________  edge ____ i _____ .__________________________=0 ___ 
	 _________  __________  ________  i=0 ___  i< _________________ ___  i++ ___________  head ____ i _____ =0 ___ 
	tot=0 ___ 
 _______ 
void addedge __________  ________  u __  ________  v __  ________  w ___________   ______ 
	edge ____ ++tot _____ .________________________=v ___ 
	edge ____ tot _____ ._________________________=w ___ 
	edge ____ tot _____ .__________________________=head ____ u _____  ___ 
	head ____ u _____ =tot ___ 
 _______ 
bool spfa __________  ___________   ______ 
	memset __________ _____________________ __ 0x3f __ sizeof __________ _____________________ ___________  ___________  ___ 
	memset __________ ______________________ __ 0 __ sizeof __________ ______________________ ___________  ___________  ___ 
	memset __________ _______________________ __ 0 __ sizeof __________ _______________________ ___________  ___________  ___ 
	_____________________ ____ 1 _____ =0 ___ 
	______________________ ____ 1 _____ =true ___ 
	Q.push __________ 1 ___________  ___ 
	while __________ !Q.empty __________  ___________  ___________   ______ 
		 ________  x=Q.front __________  ___________  ___ 
		Q.pop __________  ___________  ___ 
		______________________ ____ x _____ =false ___ 
		 _________  __________  ________  i=head ____ x _____  ___  i ___  i=edge ____ i _____ .__________________________ ___________   ______ 
			 ________  y=edge ____ i _____ .________________________ __ z=edge ____ i _____ ._________________________ ___ 
			if __________ _____________________ ____ y _____ > _____________________ ____ x _____ +z ___________   ______ 
				_____________________ ____ y _____ =_____________________ ____ x _____ +z ___  
				_______________________ ____ y _____ =_______________________ ____ x _____ +1 ___ 
				if __________ _______________________ ____ y _____ >= ___________________ ___________  return false ___ 
				if __________ !______________________ ____ y _____  ___________   ______ 
					Q.push __________ y ___________  ___ 
					______________________ ____ y _____ =true ___ 
				 _______ 
			 _______ 
		 _______ 
	 _______ 
	return false ___ 
 _______ 
 ________  main __________  ___________   ______ 
    ________________ __________ 0 ___________  ___ 
     ____________ .tie __________ 0 ___________  __  _____________ .tie __________ 0 ___________  ___ 
	 ________  T ___   ____________  ______________ T ___ 
	while __________ T-- ___________   ______ 
		init __________  ___________  ___ 
		 ____________  ______________ ___________________ ______________ ____________________ ___ 
		 _________  __________  ________  i=1 ___  i<=____________________ ___  i++ ___________   ______ 
			 ________  u __ v __ w ___ 
			 ____________  ______________ u ______________ v ______________ w ___ 
			addedge __________ u __ v __ w ___________  ___ 
			if __________ w>=0 ___________  addedge __________ v __ u __ w ___________  ___ 
		 _______ 
		 _______________  __________ spfa __________  ___________ ?"YES":"NO" ___________  ___ 
	 _______ 
	return 0 ___ 
 _______