卖铅笔

此题很水，sort一遍即可。千万别忘记开long long

注意n，m不要读入反，博主就咕在了这里，Time Limit Exceeded 10 / 10

#pragma GCC optimize(3)
#include<bits/stdc++.h>
#define For(i, j, k) for(int i=(j);i<=(k);i++)
#define INF (2147483647>>1)
#define Pair pair<int,int>
#define ll long long
using namespace std;
inline ll read()
{
    ll num=0,flag=1;
    char c=' ';
    for(;c>'9'||c<'0';c=getchar()) if(c=='-') flag=0;
    for(;c>='0'&&c<='9';num=(num<<1)+(num<<3)+c-48,c=getchar());
    return flag?num:-num;
}
#define N 1000005
ll a[N];
int main()
{
	ll n = read(), m = read();
	For(i, 1, n) a[i] = read();
	sort(a + 1, a + 1 + n);
	ll ans = 0, sum = 0; 
	For(i, 1, n) {
		if(sum + a[i] > m) {
			cout << ans << endl;;
			return 0;
		}
		ans++;
		sum += a[i];
	}
	cout << ans << endl;
	
	return 0;
}