Submission #893384

#	Time	Username	Problem	Language	Result	Execution time	Memory
893384		1075508020060209tc	A Game with Grundy (CCO20_day1problem1)	C++14	25 / 25	84 ms	8124 KiB

Main

#pragma GCC optimize("O3")
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define X first
//#define Y second
vector<pair<int,int>>event;
int n;int L;int R;int Y;

int ans[500005];
void init(){
cin>>n;
cin>>L>>R>>Y;

for(int i=1;i<=n;i++){
    int a;int p;int q;
    cin>>a>>p>>q;
    int r=(Y+p*a/q)*q/p;
    r=Y*q/p+a;
    int l=(Y-p*a/q)*(-q)/p;
    l=Y*(-q)/p+a;
    if((Y*q)%p==0){r--;l++;}
    l=max(l,L);
    r=min(r,R);
    if(r>=l){
        event.push_back({l,1});
        event.push_back({r+1,-1});
    }
}
event.push_back({L,0});
event.push_back({R+1,0});
sort(event.begin(),event.end());
int tot=0;
//cout<<endl;
for(int i=0;i<event.size()-1;i++){
    tot+=event[i].second;
    ans[tot]+=event[i+1].first-event[i].first;

   // cout<<event[i].first<<" "<<event[i].second<<"\n";

}
for(int i=1;i<=n;i++){
    ans[i]+=ans[i-1];
}
for(int i=0;i<=n;i++){
    cout<<ans[i]<<"\n";
}



}


signed main(){
init();

}

Compilation message (stderr)

Main.cpp: In function 'void init()':
Main.cpp:35:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 | for(int i=0;i<event.size()-1;i++){
      |             ~^~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 10 / 10