Language: C++

#include <bits/stdc++.h>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<40;
const double pi=acos(-1);
const double eps=1e-8;
const ll mod=1e9+7;
const int dx[4]={-1,0,1,0},dy[4]={0,-1,0,1};

const int M=31;
ll n,m;
vpll a;
vi b;

int main(){
	cin>>n>>m;
	for(int i=0;i<n;i++){
		int x,y;
		cin>>x>>y;
		if(x==0) b.push_back(y+1a);
		else a.push_back({x,y});
	}
	sort(a.begin(),a.end(),[](pll p,pll q){
		ll p1=p.first,p2=p.second;
		ll q1=q.first,q2=q.second;
		return p1*(q1+q2+1)>=q2*(p1+p2+1);
	});
	int N=a.size();
	vl dp(M,inf);
	dp[0]=0;
	for(int i=0;i<N;i++){
		vl DP=dp;
		for(int j=0;j<M-1;j++){
			DP[j+1]=min(DP[j+1],(a[i].first+1)*(dp[j]+1)+a[i].second);
		}
		dp=DP;
	}
	for(int i=1;i<n-N;i++) b[i]+=b[i-1];
	int res=0;
	for(int i=0;i<M;i++) if(dp[i]<=m){
		res=max(res,upper_bound(b.begin(),b.end(),m-dp[i])-b.begin()+i);
	}
	cout<<res<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:39:40: error: unable to find numeric literal operator 'operator""a'
   39 |                 if(x==0) b.push_back(y+1a);
      |                                        ^~
a.cc:60:24: error: no matching function for call to 'max(int&, __gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type)'
   60 |                 res=max(res,upper_bound(b.begin(),b.end(),m-dp[i])-b.begin()+i);
      |                     ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 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:60:24: note:   deduced conflicting types for parameter 'const _Tp' ('int' and '__gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type' {aka 'long int'})
   60 |                 res=max(res,upper_bound(b.begin(),b.end(),m-dp[i])-b.begin()+i);
      |                     ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:
/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:60:24: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   60 |                 res=max(res,upper_bound(b.begin(),b.end(),m-dp[i])-b.begin()+i);
      |                     ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~