結果
| 問題 |
No.546 オンリー・ワン
|
| コンテスト | |
| ユーザー |
小指が強い人
|
| 提出日時 | 2017-08-20 11:00:36 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 3 ms / 2,000 ms |
| コード長 | 4,045 bytes |
| コンパイル時間 | 1,862 ms |
| コンパイル使用メモリ | 176,832 KB |
| 実行使用メモリ | 6,824 KB |
| 最終ジャッジ日時 | 2024-10-14 17:20:03 |
| 合計ジャッジ時間 | 2,455 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 7 |
ソースコード
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> veci;
typedef vector<ll> vecll;
typedef vector<string> vecs;
template<class T,class U> using Hash=unordered_map<T,U>;
#define REP(i, a, n) for(ll i = a; i < (ll)n; i++)
#define RREP(i, a, n) for(ll i = n-1; i >= (ll)a; i--)
#define rep(i, n) REP(i, 0, n)
#define rrep(i, n) RREP(i, 0, n)
#define MD 1000000007
template<class T> T read(){T a;cin >> a;return a;}
template<class T> void read(T& a){cin >> a;}
template<class T, class ...Args> void read(T& a, Args&... args){cin >> a; read(args...);}
template<class T> void rarr(T a, int n){for(int i = 0; i < n; i++) {cin >> a[i];}}
template<char c = ' ',class T> void write(T a){cout << fixed << setprecision(4) << a << endl;}
template<char c = ' ',class T,class ...Args> void write(T a, Args... args){cout << fixed << setprecision(4) << a << c; write<c>(args...);}
template<class T> void warr(vector<T> a, const char* c = " "){cout << a[0];for(int i = 1; i < (int)a.size(); i++)cout << c << a[i];cout << endl;;}
template<class T> void warr(T a, int n, const char* c = " "){cout << a[0];for(int i = 1; i < n; i++)cout << c << a[i];cout << endl;}
void split(string s, string delim, veci& result){result.clear();string::size_type pos = 0;while(pos != string::npos){string::size_type p = s.find(delim, pos);if(p == string::npos){result.push_back(atoi(s.substr(pos).data()));break;}else {result.push_back(atoi(s.substr(pos, p - pos).data()));}pos = p + delim.size();}}
void split(string s, string delim, vecs& result){result.clear();string::size_type pos = 0;while(pos != string::npos){string::size_type p = s.find(delim, pos);if(p == string::npos){result.push_back(s.substr(pos));break;}else {result.push_back(s.substr(pos, p - pos));}pos = p + delim.size();}}
ull gcd(ull a, ull b){while(true){ull k = a % b;if(k == 0)return b;a = b;b = k;}}
ull lcm(ull a, ull b){return a*b/gcd(a,b);}
ull comb(ull n, ull m){ull p=1;m=min(m,n-m);for(ull i=1;i<=m;i++){p*=n-i+1;p/=i;}return p;}
template<typename FI>
void parted_rotate(FI first1, FI last1, FI first2, FI last2)
{
if(first1 == last1 || first2 == last2) return;
FI next = first2;
while (first1 != next) {
std::iter_swap(first1++, next++);
if(first1 == last1) first1 = first2;
if (next == last2) {
next = first2;
} else if (first1 == first2) {
first2 = next;
}
}
}
template<typename BI>
bool next_combination_imp(BI first1, BI last1, BI first2, BI last2)
{
if(first1 == last1 || first2 == last2) return false;
auto target = last1; --target;
auto last_elem = last2; --last_elem;
// find right-most incrementable element: target
while(target != first1 && !(*target < *last_elem)) --target;
if(target == first1 && !(*target < *last_elem)) {
parted_rotate(first1, last1, first2, last2);
return false;
}
// find the next value to be incremented: *next
auto next = first2;
while(!(*target < *next)) ++next;
std::iter_swap(target++, next++);
parted_rotate(target, last1, next, last2);
return true;
}
// INVARIANT: is_sorted(first, mid) && is_sorted(mid, last)
template<typename BI>
inline bool next_combination(BI first, BI mid, BI last)
{
return next_combination_imp(first, mid, mid, last);
}
// INVARIANT: is_sorted(first, mid) && is_sorted(mid, last)
template<typename BI>
inline bool prev_combination(BI first, BI mid, BI last)
{
return next_combination_imp(mid, last, first, mid);
}
int n,l,h;
ll c[10];
ll run(int d){
ll res=0;
//rep(i,n)res+=d/c[i];
int sign=1;
REP(i,1,n+1){
ll t[10];
rep(j,n)t[j]=c[j];
while(true){
ll p=1;
rep(j,i){
p=lcm(p,t[j]);
if(p>d)break;
}
res+=d/p*sign*i;
if(!next_combination(t,t+i,t+n))break;
}
sign*=-1;
}
//write(res);
return res;
}
int main(void)
{
read(n,l,h);
rep(i,n)read(c[i]);
sort(c,c+n);
ll res=0;
res+=run(h);
res-=run(l-1);
write(res);
return 0;
}
小指が強い人