Submission #1159696

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1159696	2025-03-01 07:06:20	dzuizz	Specijacija (COCI20_specijacija)	C++20	10 / 110	4093 ms	2084 KiB

Main

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#include<bits/stdc++.h>
using namespace std;
//#define DEBUG
#define int long long
pair<int,int> f(int x){
  int l=1,r=200000;
  while(l<r){
    int m=(l+r+1)>>1;
    if(m*(m-1)/2<x) l=m;
    else r=m-1;
  }
  return {l,x-l*(l-1)/2};
}
signed main(){
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  int n,q,t; cin>>n>>q>>t;
  int a[n+1];
  for(int i=1;i<=n;++i){
    cin>>a[i];
    a[i]-=i*(i-1)/2;
  }
  while(q--){
    int _x,_y; cin>>_x>>_y;
    pair<int,int> x=f(_x),y=f(_y);
    #ifdef DEBUG
    cout<<"x: "<<x.first<<" "<<x.second<<'\n';
    cout<<"y: "<<y.first<<" "<<y.second<<'\n';
    #endif
    if(x.first<y.first) swap(x,y);
    while(x.first>y.first) if(x.second>=a[--x.first])
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 30
• Subtask 4: 0 / 60