Language: C++

#include <iostream> 
#include <string> 
#include <vector> 
#include <cmath> 
#include <algorithm> 
#include <cstdlib> 
#include <ctime> 
#include <cstdio> 
#include <functional> 
#include <set> 
#include <sstream> 
#include <cctype>
#include <stack>
#include <queue>
#include <cstring>
#include <map>
#include <list>
#include <cassert>
 
using namespace std; 
 
struct edge{
	int from,to;
	__int128 cost;
	edge(int from_,int to_,__int128 cost_){
		from=from_;
		to=to_;
		cost=cost_;
	}
};
 
int n,m;
vector<edge> e;
vector<__int128> d;
const __int128 INF=1e18;
bool bf(int s){
 
	for(int i=0;i<n;i++) d[i]=INF;
	d[s]=0;
 
	int cnt=0;
	while(true){
		bool update=false;
 
		for(int i=0;i<m;i++){
			edge ed=e[i];
			if(d[ed.from]!=INF && d[ed.to]>d[ed.from]+ed.cost){
				d[ed.to]=d[ed.from]+ed.cost;
				update=true;
			}
		}
 
		if(!update) break;
		if(cnt==n+1) return false;
		cnt++;
	}
 
	return true;
 
}
 
int main(){
 
	cin>>n>>m;
 
	d=vector<__int128>(n);
	for(int i=0;i<m;i++){
		int a,b;
		__int128 c;
		cin>>a>>b>>c;
		e.push_back(edge(a-1,b-1,-c));
	}
 
	if(bf(0)) cout<<(-d[n-1])<<endl;
	else cout<<"inf"<<endl;
 
 
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:70:26: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and '__int128')
   70 |                 cin>>a>>b>>c;
      |                 ~~~~~~~~~^~~
      |                       |    |
      |                       |    __int128
      |                       std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
In file included from /usr/include/c++/14/iostream:42,
                 from a.cc:1:
/usr/include/c++/14/istream:170:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  170 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:170:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:174:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  174 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:174:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'short int&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:177:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  177 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:177:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'short unsigned int&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:181:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  181 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:181:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'int&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:184:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  184 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:184:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'unsigned int&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:188:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:188:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'long int&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:192:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:192:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'long unsigned int&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:199:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'long long int&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:203:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  203 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:203:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'long long unsigned int&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:219:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  219 |       operator>>(float& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:219:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'float&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:223:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  223 |       operator>>(double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:223:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'double&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:227:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  227 |       operator>>(long double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:227:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: cannot bind non-const lvalue reference of type 'long double&' to a value of type '__int128'
   70 |                 cin>>a>>b>>c;
      |                            ^
/usr/include/c++/14/istream:328:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  328 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/14/istream:328:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: invalid conversion from '__int128' to 'void*' [-fpermissive]
   70 |                 cin>>a>>b>>c;
      |                            ^
      |                            |
      |                            __int128
a.cc:70:28: error: cannot bind rvalue '(void*)((long int)c)' to 'void*&'
/usr/include/c++/14/istream:122:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*)(__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  122 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/14/istream:122:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: invalid conversion from '__int128' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'} [-fpermissive]
   70 |                 cin>>a>>b>>c;
      |                            ^
      |                            |
      |                            __int128
/usr/include/c++/14/istream:126:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__ios_type& (*)(__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>; __ios_type = std::basic_ios<char>]' (near match)
  126 |       operator>>(__ios_type& (*__pf)(__ios_type&))
      |       ^~~~~~~~
/usr/include/c++/14/istream:126:7: note:   conversion of argument 1 would be ill-formed:
a.cc:70:28: error: invalid conversion from '__int128' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&)' {aka 'std::basic_ios<char>& (*)(std::basic_ios<char>&)'} [-fpermissive]
   70 |                 cin>>a>>b>>c;
      |                            ^
      |