結果

問題 No.2767 Add to Divide
ユーザー apricityapricity
提出日時 2024-05-31 21:33:03
言語 C++17(gcc12)
(gcc 12.3.0 + boost 1.87.0)
結果
AC  
実行時間 7 ms / 2,000 ms
コード長 5,265 bytes
コンパイル時間 2,517 ms
コンパイル使用メモリ 139,304 KB
実行使用メモリ 6,820 KB
最終ジャッジ日時 2024-12-20 22:34:33
合計ジャッジ時間 2,728 ms
ジャッジサーバーID
(参考情報)
judge1 / judge4
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 1
other AC * 16
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<numeric>
#include<cmath>
#include<utility>
#include<tuple>
#include<cstdint>
#include<cstdio>
#include<iomanip>
#include<map>
#include<queue>
#include<set>
#include<stack>
#include<deque>
#include<unordered_map>
#include<unordered_set>
#include<bitset>
#include<cctype>
#include<chrono>
#include<random>
#include<cassert>
#include<cstddef>
#include<iterator>
#include<string_view>
#include<type_traits>
#ifdef LOCAL
# include "debug_print.hpp"
# define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
# define debug(...) (static_cast<void>(0))
#endif
using namespace std;
#define rep1(a) for(int i = 0; i < a; i++)
#define rep2(i, a) for(int i = 0; i < a; i++)
#define rep3(i, a, b) for(int i = a; i < b; i++)
#define rep4(i, a, b, c) for(int i = a; i < b; i += c)
#define overload4(a, b, c, d, e, ...) e
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define rrep1(a) for(int i = (a)-1; i >= 0; i--)
#define rrep2(i, a) for(int i = (a)-1; i >= 0; i--)
#define rrep3(i, a, b) for(int i = (b)-1; i >= a; i--)
#define rrep4(i, a, b, c) for(int i = (b)-1; i >= a; i -= c)
#define rrep(...) overload4(__VA_ARGS__, rrep4, rrep3, rrep2, rrep1)(__VA_ARGS__)
#define ALL(v) v.begin(), v.end()
#define RALL(v) v.rbegin(), v.rend()
#define UNIQUE(v) v.erase( unique(v.begin(), v.end()), v.end() );
#define pb push_back
using ll = long long;
using D = double;
using LD = long double;
using P = pair<int, int>;
using vi = vector<int>;
using vl = vector<ll>;
template <class T> using vc = vector<T>;
template <class T> using vvc = vector<vc<T>>;
template <class T> using vvvc = vector<vvc<T>>;
template <class T> using vvvvc = vector<vvvc<T>>;
template <class T> using vvvvvc = vector<vvvvc<T>>;
#define vv(type, name, h, ...) \
vector<vector<type>> name(h, vector<type>(__VA_ARGS__))
#define vvv(type, name, h, w, ...) \
vector<vector<vector<type>>> name( \
h, vector<vector<type>>(w, vector<type>(__VA_ARGS__)))
#define vvvv(type, name, a, b, c, ...) \
vector<vector<vector<vector<type>>>> name( \
a, vector<vector<vector<type>>>( \
b, vector<vector<type>>(c, vector<type>(__VA_ARGS__))))
template<typename T> using PQ = priority_queue<T,vector<T>>;
template<typename T> using minPQ = priority_queue<T, vector<T>, greater<T>>;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
void yesno(bool flag) {cout << (flag?"Yes":"No") << "\n";}
template<typename T, typename U>
ostream &operator<<(ostream &os, const pair<T, U> &p) {
os << p.first << " " << p.second;
return os;
}
template<typename T, typename U>
istream &operator>>(istream &is, pair<T, U> &p) {
is >> p.first >> p.second;
return is;
}
template<typename T>
ostream &operator<<(ostream &os, const vector<T> &v) {
int s = (int)v.size();
for (int i = 0; i < s; i++) os << (i ? " " : "") << v[i];
return os;
}
template<typename T>
istream &operator>>(istream &is, vector<T> &v) {
for (auto &x : v) is >> x;
return is;
}
void in() {}
template<typename T, class... U>
void in(T &t, U &...u) {
cin >> t;
in(u...);
}
void out() { cout << "\n"; }
template<typename T, class... U, char sep = ' '>
void out(const T &t, const U &...u) {
cout << t;
if (sizeof...(u)) cout << sep;
out(u...);
}
void outr() {}
template<typename T, class... U, char sep = ' '>
void outr(const T &t, const U &...u) {
cout << t;
outr(u...);
}
struct factorizer{
vector<bool> isprime;
vector<ll> primes;
factorizer(ll n) : isprime(sqrtl(n)+1,true){
isprime[1] = false;
for(ll i = 2; i*i <= n; i++){
if(!isprime[i]) continue;
primes.pb(i);
for(ll j = i+i; j*j <=n; j += i){
isprime[j] = false;
}
}
}
vector<pair<ll,int>> factorize(ll n){
vector<pair<ll,int>> res;
for(ll p : primes){
/* if(p * p > n) break; */
int e = 0;
while(n%p == 0){
n /= p;
e++;
}
if(e > 0) res.pb({p,e});
}
if(n > 1) res.pb({n,1});
return res;
}
vector<ll> divisors(ll n){
vector<ll> res({1});
const auto& pf = factorize(n);
for(auto x : pf){
int s = res.size();
rep(i,s){
ll m = 1;
rep(j,x.second){
m *= x.first;
res.push_back(res[i]*m);
}
}
}
return res;
}
};
const ll INF = 1e18;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int t; in(t);
factorizer f(1000000001);
while(t--){
ll a,b; in(a,b);
if(a==b) {
out(0);
continue;
}
auto v = f.divisors(b-a);
ll ans = INF;
for(auto m : v){
if((b-a)%m==0 and (b-a)/m>=a){
chmin(ans, (b-a)/m-a);
}
}
out(ans == INF ? -1:ans);
}
}
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