結果
| 問題 |
No.2142 Segment Zero
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-12-02 21:54:39 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 414 ms / 2,000 ms |
| コード長 | 2,974 bytes |
| コンパイル時間 | 1,673 ms |
| コンパイル使用メモリ | 197,536 KB |
| 最終ジャッジ日時 | 2025-02-09 03:48:21 |
|
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 * 2 |
| other | AC * 35 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
namespace atcoder{};using namespace atcoder;
using ull = uint64_t;
using ll = int64_t;
using vi = vector<int>;
using vll = vector<ll>;
using vs = vector<string>;
using ld = long double;
using P = pair<ll,ll>;
using G = vector<vector<int>>;
#ifdef MYDEBUG
#pragma once
#define LO(...) fprintf(stderr, __VA_ARGS__)
#define debug(x) cerr << "\033[33m(line:" << __LINE__ << ") " << #x << ": " << x << "\033[m" << endl
template<class C> string join(const C& c){stringstream ss; for(auto it=c.begin(); it!=c.end();it++){ss << *it;if(it!=c.end())ss<<", ";}return ss.str();}
template<class C> ostream &operator<<(ostream &os, const vector<C>& c){for(auto it=c.begin(); it!=c.end();it++){os << *it;if(it!=c.end())os<<", ";}return os;}
#else
#define LO(...) (void)0
#define debug(x) (void)0
#endif
#define reps(i,a,n) for(ll i##_len = (ll)(n), i = (a); i < i##_len; ++i)
#define rep(i,n) reps(i,0,(n))
#define rrep(i,n) reps(i,1,(n)+1)
#define repd(i,n) for(ll i=(n)-1;i>=0;i--)
#define rrepd(i,n) for(ll i=(n);i>=1;i--)
#define inp(i) ll i; cin >> i;
#define inps(s) string s; cin >> s;
#define inpp(p) cin >> (p).first >> (p).second
#define inpv(v,N) vll v(N);rep(i,N)cin>>v[i];
#define inpg(g,N,M) g.resize(N);rep(i,M){inp(a);inp(b);a--,b--;g[a].push_back(b);g[b].push_back(a);}
#define all(v) begin(v),end(v)
#define YES cout<<"YES\n"
#define NO cout<<"NO\n"
#define yes cout<<"yes\n"
#define no cout<<"no\n"
#define Yes cout<<"Yes\n"
#define No cout<<"No\n"
void YESNO(bool b){cout<<(b?"YES\n":"NO\n");} void yesno(bool b){cout<<(b?"yes\n":"no\n");} void YesNo(bool b){cout<<(b?"Yes\n":"No\n");}
#define SP cout << " "
#define ENDL cout << "\n"
#define ou(i) cout << (i)
#define ous(i) cout << (i) << " "
#define oul(i) cout << (i) << "\n"
#define setfp() cout << fixed << setprecision(16)
template<typename C> void ouv(const C &v){for(auto &&e:v){cout << e;if(&e != &v.back()) cout << ' ';}cout << "\n";}
template<typename C> void ouvadd(const C &v){for(auto &&e:v){cout << e+1;if(&e != &v.back()) cout << ' ';}cout << "\n";}
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; }
inline ll lg(ll __n) { return sizeof(ll) * __CHAR_BIT__ - 1 - __builtin_clzl(__n); }
int dx[8]={1,0,-1,0,1,-1,-1,1};
int dy[8]={0,1,0,-1,1,1,-1,-1};
constexpr ll INF = 1e18;
int main(){
inp(N);
inp(K);
ll sum = 0;
set<ll> a;
ll f = 0;
rep(i,N){
f += N-i;
a.insert(f);
}
if(K==0){
oul(1);
return 0;
}
if(a.count(K)){
oul(1);
return 0;
}
rep(i,N){
auto it = a.end();
it--;
a.erase(it);
sum += i + 1;
if(a.count(K - sum)){
oul(1);
return 0;
}
if(sum == K){
oul(1);
return 0;
}
}
oul(2);
return 0;
}