제출 #1346695

#제출 시각아이디문제언어결과실행 시간메모리
1346695Nika533Examination (JOI19_examination)C++20
0 / 100
934 ms124232 KiB
#pragma gcc diagnostic "-std=c++1z"
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define s second
#define MOD 1000000007
#define pii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define allr(x) (x).rbegin(),(x).rend()

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>

using namespace std;
const int N=1e5+5;
int n,m,T,k,a[N],b[N],x[N],y[N],z[N],ans[N];
pair<pii,int> ab[N];
ordered_set t[N*4];
void build(int v, int tl, int tr) {
     if (tl==tr) {
          t[v].insert(a[tl]+b[tl]); return;
     }
     int mid=(tl+tr)/2;
     build(v*2,tl,mid); build(v*2+1,mid+1,tr);
     for (auto x:t[v*2]) t[v].insert(x);
     for (auto x:t[v*2+1]) t[v].insert(x);
}
void update(int v, int tl, int tr, int ind, int val) {
	int xx=t[v].order_of_key(a[ind]+b[ind]);
	if (xx<t[v].size()) t[v].erase(t[v].find_by_order(xx));
//	 t[v].erase(t[v].lower_bound(a[ind]+b[ind]));
     if (tl==tr) return;
     int mid=(tl+tr)/2;
     if (ind<=mid) update(v*2,tl,mid,ind,val); 
     else update(v*2+1,mid+1,tr,ind,val);
}
int query(int v, int tl, int tr, int l, int r, int val) {
     if (l>r) return 0;
     if (tl==l && tr==r) {
          int num=t[v].order_of_key(val); int szz=t[v].size(); num=szz-num;
          return num;
     }
     int mid=(tl+tr)/2;
     return query(v*2,tl,mid,l,min(r,mid),val)+query(v*2+1,mid+1,tr,max(l,mid+1),r,val);
}
void test_case() {
     cin>>n>>m;
     for (int i=1; i<=n; i++) cin>>ab[i].f.f>>ab[i].f.s;
     for (int i=1; i<=n; i++) ab[i].s=i;
     sort(ab+1,ab+1+n);
     for (int i=1; i<=n; i++) {
          a[i]=ab[i].f.f; b[i]=ab[i].f.s;
     }
     for (int i=1; i<=m; i++) cin>>x[i]>>y[i]>>z[i];
     pii bi[n+1],yi[m+1]; bi[0]={0,0}; yi[0]={0,0};
     for (int i=1; i<=n; i++) {
          bi[i]={b[i],i};
     }
     for (int i=1; i<=m; i++) {
          yi[i]={y[i],i};
     }
     sort(bi+1,bi+1+n); sort(yi+1,yi+1+m);
     int cur=1;
     build(1,1,n);
     for (int i=1; i<=m; i++) {
          int ind=yi[i].s;
          while (cur<=n && bi[cur].f<yi[i].f) {
          		cout<<"POS "<<i<<" "<<ind<<" "<<bi[cur].s<<endl;
               update(1,1,n,bi[cur].s,-1); cur++;
          }
          int l=1,r=n,idx=n+1;
          while (l<=r) {
               int mid=(l+r)/2;
               if (a[mid]>=x[ind]) {
                    idx=mid; r=mid-1;
               }
               else {
                    l=mid+1;
               }
          }
          ans[ind]=query(1,1,n,idx,n,z[ind]);
          cout<<i<<" "<<idx<<" "<<ans[ind]<<endl;
     }
     for (int i=1; i<=m; i++) cout<<ans[i]<<endl;
}
main () {
	ios :: sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	T=1; 
	while (T--) test_case();
}

컴파일 시 표준 에러 (stderr) 메시지

examination.cpp:88:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   88 | main () {
      | ^~~~
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