Submission #676419

#	Time	Username	Problem	Language	Result	Execution time	Memory
676419		urosk	Examination (JOI19_examination)	C++14	43 / 100	3074 ms	265152 KiB

examination

#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include "bits/stdc++.h"
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll int
#define llinf 100000000000000000LL // 10^17
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) (ll)(a.size())
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define cer(a) {cerr<<#a<<": ";for(ll x_ : a) cerr<<x_<< " ";cerr<<endl;}

#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);

using namespace std;
using namespace __gnu_pbds;
typedef tree<int,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
#define maxn 400005
struct tupl{
    ll x,y,sum,id;
} v[maxn];
ll n,q;
pll a[maxn];
ordered_set t[4*maxn];
ll ls[4*maxn],rs[4*maxn],root,tsz;
void upd(ll v,ll tl,ll tr,ll i,ll x,bool f){
    if(f) t[v].insert(x);
    else t[v].erase(t[v].find_by_order(t[v].order_of_key(x)));
    if(tl==tr) return;
    ll mid = (tl+tr)/2;
    if(i<=mid) upd(ls[v],tl,mid,i,x,f);
    else upd(rs[v],mid+1,tr,i,x,f);
}
ll get(ll v,ll tl,ll tr,ll l,ll r,ll x){
    if(r<tl||l>tr||tl>tr) return 0;
    if(l<=tl&&tr<=r){
        ll cnt = t[v].order_of_key(x);
        return sz(t[v]) - cnt;
    }
    ll mid = (tl+tr)/2;
    return get(ls[v],tl,mid,l,r,x) + get(rs[v],mid+1,tr,l,r,x);
}
void init(ll &v,ll tl,ll tr){
    v = ++tsz;
    if(tl==tr) return;
    ll mid = (tl+tr)/2;
    init(ls[v],tl,mid);
    init(rs[v],mid+1,tr);
}
bool cmp(pll x,pll y){return x.fi+x.sc<y.fi+y.sc;}
bool cmp2(tupl x,tupl y){return x.sum<y.sum;}
map<ll,ll> mp;
set<ll> s;
ll it = 0;
ll ans[maxn];
void tc(){
    cin >> n >> q;
    for(ll i = 1;i<=n;i++) cin >> a[i].fi >> a[i].sc;
    for(ll i = 1;i<=q;i++) cin >> v[i].x >> v[i].y >> v[i].sum;
    for(ll i = 1;i<=q;i++) v[i].id = i;
    sort(a+1,a+1+n,cmp);
    sort(v+1,v+1+q,cmp2);
    for(ll i = 1;i<=n;i++) s.insert(a[i].fi),s.insert(a[i].sc);
    for(ll i = 1;i<=q;i++) s.insert(v[i].x),s.insert(v[i].y);
    for(ll x : s) mp[x] = ++it;
    init(root,1,it);
    for(ll i = 1;i<=n;i++) upd(root,1,it,mp[a[i].fi],mp[a[i].sc],1);
    ll k = 1;
    for(ll j = 1;j<=q;j++){
        while(k<=n&&a[k].fi+a[k].sc<v[j].sum){
            upd(root,1,it,mp[a[k].fi],mp[a[k].sc],0);
            k++;
        }
        ans[v[j].id] = get(root,1,it,mp[v[j].x],it,mp[v[j].y]);
    }
    for(ll i = 1;i<=q;i++) cout<<ans[i]<<endl;
}
int main(){
	daj_mi_malo_vremena
    int t; t = 1;
    while(t--){
        tc();
    }
	return 0;
}

• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 0 / 57