src/math/floor_intervals.hpp

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Last update: 2025-12-30 15:03:15+09:00
Include: #include "src/math/floor_intervals.hpp"

Depends on

src/template.hpp

Code

#include "../template.hpp"

inline vector<array<long,3>> floor_intervals(long N){
    vector<array<long,3>> ret;
    for(long i=1;i<=N;){
        long q=N/i;
        long j=N/q;
        ret.push_back({i,j+1,q});
        i=j+1;
    }
    return ret;
}

#line 2 "src/template.hpp"
#include <bits/stdc++.h>
using namespace std;
#define si(a) (long)a.size()
#define fi first
#define se second
#define all(x) x.begin(),x.end()
#define rep(i,n) for(int i=0;i<(int)(n);++i)
template<typename S,typename F> bool chmin(S&a,F b){return b<a?(a=b,1):0;}
template<typename S,typename F> bool chmax(S&a,F b){return b>a?(a=b,1):0;}
bool _=(ios::sync_with_stdio(0),cin.tie(0),cout<<fixed<<setprecision(16),0);
#line 2 "src/math/floor_intervals.hpp"

inline vector<array<long,3>> floor_intervals(long N){
    vector<array<long,3>> ret;
    for(long i=1;i<=N;){
        long q=N/i;
        long j=N/q;
        ret.push_back({i,j+1,q});
        i=j+1;
    }
    return ret;
}