Submission #3578580

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Source Code Expand

#include <bits/stdc++.h>
const int INF = 1e9;
const int MOD = 1e9+7;
using LL = long long;
const LL LINF = 1e18;
const double EPS = 1e-10;
using namespace std;
#define COUT(v) cout<<(v)<<endl
#define COUTDOUBLE(v) cout << std::setprecision(10)<<(v)<<endl;
#define CIN(n)  int(n);cin >> (n)
#define LCIN(n) LL(n);cin >> (n)
#define SCIN(n) string(n);cin >> (n)
#define YES(n) cout<<((n)? "YES" : "NO")<<endl
#define Yes(n) cout<<((n)? "Yes" : "No")<<endl
#define POSSIBLE(n) cout << ((n) ? "POSSIBLE" : "IMPOSSIBLE"  ) << endl
#define Possible(n) cout << ((n) ? "Possible" : "Impossible"  ) <<endl

#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) for(int i=0;i<(n);++i)
#define REPR(i,n) for(int i=n;i>=0;i--)

#define FOREACH(x,a) for(auto& (x) : (a) )

#define ALL(obj) (obj).begin(),(obj).end()

#define P pair<LL,LL>
#define I vector<int>
#define pb(v) push_back(v)
#define V vector
#define rt return
#define rmsame(a) sort(ALL(a)),a.erase(unique(ALL(a)), a.end())
#define ENDL cout<<endl
#define f first
#define s second

typedef string::const_iterator State;
class PalseError {};
class Edge{
public:
    int from,to,value;
    Edge(LL a,LL b,LL c){
        from = a;
        to = b;
        value = c;
    }
    Edge(LL a,LL b){
        from = a;
        to = b;
    }
};




int main(){
    CIN(N);
    I vec;
    CIN(K);
    REP(a,N){
        CIN(b);
        vec.push_back(b);
    }
    sort(ALL(vec),greater<int>());
    int tani = 0;
    REP(a,N){
        tani += vec.at(a);
        if(K <= tani){
            COUT(a+1);
            return 0;
        }
    }
    COUT(-1);
    return 0;
}

Submission Info

Judge Result