#include<bits/stdc++.h> #define VAR(i,n) __typeof(n) i = (n) #define loop(i,j,s) for(int i=j;i<s;i++) #define loopback(i,j,s) for(int i=j;i>=s;i--) #define foreach(i,c) for(VAR(i,(c).begin());i!=(c).end();i++) #define pln( x ) cout << x << "\n" #define ps( x ) cout << x << " " #define entr cout << "\n" #define pcnt(i) __builtin_popcount(i) #define ll long long #define pb push_back #define mp make_pair #define ff first #define ss second #define SIZE(c) (c).size() #define ALL(c) (c).begin(), (c).end() using namespace std; typedef vector<int> VI; typedef pair<int, int> PII; typedef vector<vector<int> > VVI; const int INFTY=20000000; const int MAX=500100; const int MOD=10000000; void coutTab(int* tab,int n){ loop(i,0,n){ cout<<tab[i]<<" "; } cout<<"\n"; } template<class T> void coutVec(vector<T> tab){ for(T t : tab){ cout<<t<<" "; } cout<<"\n"; } //------------------------------------------ multiset<ll> S; multiset<ll>::iterator last_lower_eq_than(multiset<ll> & A, ll a) { auto it = A.lower_bound(a); if(it == A.begin()) return A.end(); it--; return it; } void give_back(VI & r) { while(!r.empty()) { S.insert(r[r.size()-1]); r.pop_back(); } } int check(ll s,ll k) { int i=0; VI r; while(s < k) { auto it = last_lower_eq_than(S, s); //ps(s);pln((*it)); if(it == S.end()) { give_back(r); return -1; } s += *it; r.pb(*it); S.erase(it); i++; } give_back(r); return i; } int main(){ ios_base::sync_with_stdio(0); int n,w,q,s,k,t; cin>>n; loop(i,0,n) { cin>>w; S.insert(w); } cin>>q; while(q--) { cin>>t; if(t==1) { cin>>s>>k; pln(check(s,k)); } else if(t==2) { cin>>w; S.insert(w); } else { cin>>w; S.erase(S.find(w)); } } }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | #include<bits/stdc++.h> #define VAR(i,n) __typeof(n) i = (n) #define loop(i,j,s) for(int i=j;i<s;i++) #define loopback(i,j,s) for(int i=j;i>=s;i--) #define foreach(i,c) for(VAR(i,(c).begin());i!=(c).end();i++) #define pln( x ) cout << x << "\n" #define ps( x ) cout << x << " " #define entr cout << "\n" #define pcnt(i) __builtin_popcount(i) #define ll long long #define pb push_back #define mp make_pair #define ff first #define ss second #define SIZE(c) (c).size() #define ALL(c) (c).begin(), (c).end() using namespace std; typedef vector<int> VI; typedef pair<int, int> PII; typedef vector<vector<int> > VVI; const int INFTY=20000000; const int MAX=500100; const int MOD=10000000; void coutTab(int* tab,int n){ loop(i,0,n){ cout<<tab[i]<<" "; } cout<<"\n"; } template<class T> void coutVec(vector<T> tab){ for(T t : tab){ cout<<t<<" "; } cout<<"\n"; } //------------------------------------------ multiset<ll> S; multiset<ll>::iterator last_lower_eq_than(multiset<ll> & A, ll a) { auto it = A.lower_bound(a); if(it == A.begin()) return A.end(); it--; return it; } void give_back(VI & r) { while(!r.empty()) { S.insert(r[r.size()-1]); r.pop_back(); } } int check(ll s,ll k) { int i=0; VI r; while(s < k) { auto it = last_lower_eq_than(S, s); //ps(s);pln((*it)); if(it == S.end()) { give_back(r); return -1; } s += *it; r.pb(*it); S.erase(it); i++; } give_back(r); return i; } int main(){ ios_base::sync_with_stdio(0); int n,w,q,s,k,t; cin>>n; loop(i,0,n) { cin>>w; S.insert(w); } cin>>q; while(q--) { cin>>t; if(t==1) { cin>>s>>k; pln(check(s,k)); } else if(t==2) { cin>>w; S.insert(w); } else { cin>>w; S.erase(S.find(w)); } } } |