이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};
void setIO(string s) {
freopen((s + ".in").c_str(), "r", stdin);
freopen((s + ".out").c_str(), "w", stdout);
}
struct node{
int x,y,z,id;
bool operator<(const node &a)const{
if(x!=a.x) return x<a.x;
if(y!=a.y) return y<a.y;
if(z!=a.z) return z<a.z;
return a.id<id;
}
};
vector<node>vec;
const int mxn=2e5+5;
int ans[mxn];
int bit[mxn];
void update(int pos,int val){
for(;pos<mxn;pos+=(pos&-pos)){
bit[pos]+=val;
}
}
int query(int pos){
int ans=0;
for(;pos;pos-=(pos&-pos)){
ans+=bit[pos];
}
return ans;
}
bool comp(node a,node b){
return a.y<b.y;
}
void go(int l,int r){
if(l==r){
return;
}
int mid=(l+r)/2;
go(l,mid);
go(mid+1,r);
int R=r;
for(int L=mid;L>=l;L--){
while(R>mid and vec[R].y>=vec[L].y){
if(vec[R].id==-1){
update(vec[R].z,1);
}
R--;
}
if(vec[L].id!=-1){
ans[vec[L].id]+=query(mxn-1)-query(vec[L].z-1);
}
}
R++;
while(R<=r){
if(vec[R].id==-1){
update(vec[R].z,-1);
}
R++;
}
sort(vec.begin()+l,vec.begin()+r+1,comp);
}
int main() {_
int n,m;
cin>>n>>m;
vec.resize(n+m);
for(int i=0;i<n;i++){
cin>>vec[i].x>>vec[i].y;
vec[i].z=vec[i].x+vec[i].y;
vec[i].id=-1;
}
for(int i=n;i<n+m;i++){
cin>>vec[i].x>>vec[i].y>>vec[i].z;
vec[i].id=i-n;
}
vector<int> zs;
zs.push_back(-1);
for(int i=0;i<n+m;i++){
zs.push_back(vec[i].z);
}
sort(all(zs));
zs.resize(unique(all(zs))-zs.begin());
for(int i=0;i<n+m;i++){
vec[i].z=lower_bound(all(zs),vec[i].z)-zs.begin();
}
sort(all(vec));
go(0,n+m-1);
for(int i=0;i<m;i++){
cout<<ans[i]<<'\n';
}
return 0;
}
//maybe its multiset not set
//yeeorz
//laborz
컴파일 시 표준 에러 (stderr) 메시지
examination.cpp: In function 'void setIO(std::string)':
examination.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
15 | freopen((s + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
16 | freopen((s + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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