#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,b) for (int i = (a); i <= (b); ++i)
#define REPD(i,a,b) for (int i = (a); i >= (b); --i)
#define FORI(i,n) REP(i,1,n)
#define FOR(i,n) REP(i,0,int(n)-1)
#define mp make_pair
#define pb push_back
#define pii pair<int,int>
#define vi vector<int>
#define ll long long
#define SZ(x) int((x).size())
#define DBG(v) cerr << #v << " = " << (v) << endl;
#define FOREACH(i,t) for (typeof(t.begin()) i=t.begin(); i!=t.end(); i++)
#define fi first
#define se second
const int OP_MAX = 1;
const int N = 300300;
int n;
ll w[N];
int used[N];
int op;
void add(ll w_cur) {
op++;
w[n++] = w_cur;
}
void rmv(ll w_cur) {
op++;
FOR(i,n) if (w[i] == w_cur) {
swap(w[i], w[n-1]);
n--;
return;
}
}
void upd() {
sort(w,w+n);
w[n] = 1e13;
}
int qit;
int query(ll w_ini, ll w_fin) {
qit++;
if (op >= OP_MAX) upd();
int ret = 0;
while(w_ini < w_fin) {
//cerr << w_ini << " " << w_fin << "\n";
int pos = lower_bound(w,w+n,w_ini) - w;
if (pos == 0) return -1; // todo check -1 before
pos--;
if (w[pos]*2 >= w_ini) {
used[pos] = qit;
w_ini += w[pos];
//cerr << "eating big " << w[pos] << "\n";
ret++;
} else {
ll goal = min(w_fin, w[pos+1]+1);
//cerr << "goal is " << goal << "\n";
while (w_ini < goal) {
while(used[pos] == qit) {
if (pos == 0) return -1;
pos--;
}
w_ini += w[pos];
ret++;
used[pos] = qit;
}
}
}
return ret;
}
int main() {
scanf("%d", &n);
FOR(i,n) scanf("%lld", &w[i]);
upd();
int qn;
scanf("%d", &qn);
FOR(qi,qn) {
int qt;
scanf("%d", &qt);
if (qt == 1) {
ll w_ini, w_fin;
scanf("%lld%lld", &w_ini, &w_fin);
printf("%d\n", query(w_ini, w_fin));
} else if (qt == 2) {
ll w_cur;
scanf("%lld", &w_cur);
add(w_cur);
} else {
ll w_cur;
scanf("%lld", &w_cur);
rmv(w_cur);
}
}
return 0;
}
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 97 98 99 100 101 | #include <bits/stdc++.h> using namespace std; #define REP(i,a,b) for (int i = (a); i <= (b); ++i) #define REPD(i,a,b) for (int i = (a); i >= (b); --i) #define FORI(i,n) REP(i,1,n) #define FOR(i,n) REP(i,0,int(n)-1) #define mp make_pair #define pb push_back #define pii pair<int,int> #define vi vector<int> #define ll long long #define SZ(x) int((x).size()) #define DBG(v) cerr << #v << " = " << (v) << endl; #define FOREACH(i,t) for (typeof(t.begin()) i=t.begin(); i!=t.end(); i++) #define fi first #define se second const int OP_MAX = 1; const int N = 300300; int n; ll w[N]; int used[N]; int op; void add(ll w_cur) { op++; w[n++] = w_cur; } void rmv(ll w_cur) { op++; FOR(i,n) if (w[i] == w_cur) { swap(w[i], w[n-1]); n--; return; } } void upd() { sort(w,w+n); w[n] = 1e13; } int qit; int query(ll w_ini, ll w_fin) { qit++; if (op >= OP_MAX) upd(); int ret = 0; while(w_ini < w_fin) { //cerr << w_ini << " " << w_fin << "\n"; int pos = lower_bound(w,w+n,w_ini) - w; if (pos == 0) return -1; // todo check -1 before pos--; if (w[pos]*2 >= w_ini) { used[pos] = qit; w_ini += w[pos]; //cerr << "eating big " << w[pos] << "\n"; ret++; } else { ll goal = min(w_fin, w[pos+1]+1); //cerr << "goal is " << goal << "\n"; while (w_ini < goal) { while(used[pos] == qit) { if (pos == 0) return -1; pos--; } w_ini += w[pos]; ret++; used[pos] = qit; } } } return ret; } int main() { scanf("%d", &n); FOR(i,n) scanf("%lld", &w[i]); upd(); int qn; scanf("%d", &qn); FOR(qi,qn) { int qt; scanf("%d", &qt); if (qt == 1) { ll w_ini, w_fin; scanf("%lld%lld", &w_ini, &w_fin); printf("%d\n", query(w_ini, w_fin)); } else if (qt == 2) { ll w_cur; scanf("%lld", &w_cur); add(w_cur); } else { ll w_cur; scanf("%lld", &w_cur); rmv(w_cur); } } return 0; } |
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