This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
struct cube{
int a,b,c,idx;
};
const int MAXN=1e5;
int ans[MAXN]={0};
int bit[2*MAXN+1]={0};
void update(int i,int x){
for(;i<=2*MAXN;i+=(i&(-i))){
bit[i]+=x;
}
}
int pre(int i){
int curr=0;
for(;i;i-=(i&(-i))){
curr+=bit[i];
}
return curr;
}
int query(int l,int r){
return pre(r)-pre(l-1);
}
bool cmp(cube &a,cube &b){
return (a.b>b.b);
}
bool cmp2(cube &a,cube &b){
if(a.a!=b.a){
return (a.a<b.a);
}
if(a.b!=b.b){
return (a.b<b.b);
}
if(a.c!=b.c){
return (a.c<b.c);
}
if(a.idx!=b.idx){
return (a.idx>b.idx);
}
}
void dnc(vector<cube> &v){
if(v.size()<=1){
return;
}
int mid=(v.size()>>1);
vector<cube> v1,v2;
for(int i=0;i<mid;i++){
v1.push_back(v[i]);
}
for(int i=mid;i<v.size();i++){
v2.push_back(v[i]);
}
dnc(v1),dnc(v2);
sort(v.begin(),v.end(),cmp);
/*cout << "GOT" << endl;
cout << "V1: " << endl;
for(int i=0;i<v1.size();i++){
cout << v1[i].a << ' ' << v1[i].b << ' ' << v1[i].c << ' ' << v1[i].idx << endl;
}
cout << "V2: " << endl;
for(int i=0;i<v2.size();i++){
cout << v2[i].a << ' ' << v2[i].b << ' ' << v2[i].c << ' ' << v2[i].idx << endl;
}*/
int ptr=0;
for(int i=0;i<v2.size();i++){
while(ptr<v1.size()&&v1[ptr].b>v2[i].b){
if(v1[ptr].idx!=-1){
ans[v1[ptr].idx]+=query(v1[ptr].c,2*MAXN);
}
ptr++;
}
if(v2[i].idx==-1){
update(v2[i].c,1);
}
}
while(ptr<v1.size()){
if(v1[ptr].idx!=-1){
ans[v1[ptr].idx]+=query(v1[ptr].c,2*MAXN);
}
ptr++;
}
for(int i=0;i<v2.size();i++){
if(v2[i].idx==-1){
update(v2[i].c,-1);
}
}
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n,q;
cin >> n >> q;
vector<cube> v;
map<int,int> mp;
for(int i=0;i<n;i++){
int s,t;
cin >> s >> t;
v.push_back({s,t,s+t,-1});
mp[s+t]=1;
}
for(int i=0;i<q;i++){
int x,y,z;
cin >> x >> y >> z;
v.push_back({x,y,z,i});
mp[z]=1;
}
int idx=1;
for(pair<const int,int> &x:mp){
x.second=idx;
idx++;
}
for(int i=0;i<v.size();i++){
v[i].c=mp[v[i].c];
}
for(int i=0;i<v.size();i++){
// cout << v[i].a << ' ' << v[i].b << ' ' << v[i].c << ' ' << v[i].idx << endl;
}
sort(v.begin(),v.end(),cmp2);
dnc(v);
for(int i=0;i<q;i++){
cout << ans[i] << endl;
}
}
Compilation message (stderr)
examination.cpp: In function 'void dnc(std::vector<cube>&)':
examination.cpp:52:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<cube>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | for(int i=mid;i<v.size();i++){
| ~^~~~~~~~~
examination.cpp:67:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<cube>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
67 | for(int i=0;i<v2.size();i++){
| ~^~~~~~~~~~
examination.cpp:68:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<cube>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
68 | while(ptr<v1.size()&&v1[ptr].b>v2[i].b){
| ~~~^~~~~~~~~~
examination.cpp:78:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<cube>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
78 | while(ptr<v1.size()){
| ~~~^~~~~~~~~~
examination.cpp:84:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<cube>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
84 | for(int i=0;i<v2.size();i++){
| ~^~~~~~~~~~
examination.cpp: In function 'int main()':
examination.cpp:114:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<cube>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
114 | for(int i=0;i<v.size();i++){
| ~^~~~~~~~~
examination.cpp:117:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<cube>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
117 | for(int i=0;i<v.size();i++){
| ~^~~~~~~~~
examination.cpp: In function 'bool cmp2(cube&, cube&)':
examination.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type]
42 | }
| ^
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