Language: C++

#include<iostream>
#include<cstring>
#include<algorithm>
#include<cstdio>
#include<vector>
using namespace std;
#define int long long
#define MAXN 200006
#define pb push_back
#define pii pair<int,int>
#define mp make_pair
int n , m , q;

int fa[MAXN];
int find( int x ) {
	return x == fa[x] ? x : fa[x] = find( fa[x] );
}
struct dl{
	int u , v;
} d[MAXN] ;
int cnt , c;

signed main( ) {
	cin >> n >> m >> q;
	for( int i = 1 ; i <= n ; ++ i ) fa[i] = i;
	for( int i = 1 , u , v , c ; i <= q ; ++ i ) {
		scanf("%lld%lld%lld",&u,&v,&c);
		++ u , ++ v;
		if( !c ) {
			fa[find( u )] = find( v );
		} else {
			d[++ cnt] = (dl) { u , v };
		}
	}
	for( int i = 1 , u , v ; i <= cnt ; ++ i ) {
		if( find( d[i].u ) == find( d[i].v ) )
			return puts("No") , 0;
	}
	for( int i = 1 ; i <= n ; ++ i ) if( fa[i] == i )
		++ c;
	int ed = m - n + c;
	if( !cnt ) return puts( ( ed >= c - 1 && ed <= c * ( c - 1 ) / 2 ) ? "Yes" : "No" ) , 0;
	else return puts( ( ed >= max( c , 3 ) && ed <= c * ( c - 1 ) / 2 ) ? "Yes" : "No" ) , 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:43:38: error: no matching function for call to 'max(long long int&, int)'
   43 |         else return puts( ( ed >= max( c , 3 ) && ed <= c * ( c - 1 ) / 2 ) ? "Yes" : "No" ) , 0;
      |                                   ~~~^~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:43:38: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   43 |         else return puts( ( ed >= max( c , 3 ) && ed <= c * ( c - 1 ) / 2 ) ? "Yes" : "No" ) , 0;
      |                                   ~~~^~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:3:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:43:38: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   43 |         else return puts( ( ed >= max( c , 3 ) && ed <= c * ( c - 1 ) / 2 ) ? "Yes" : "No" ) , 0;
      |                                   ~~~^~~~~~~~~