結果
問題 | No.1990 Candy Boxes |
ユーザー | sigma425 |
提出日時 | 2024-10-22 19:52:45 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 28 ms / 2,000 ms |
コード長 | 3,776 bytes |
コンパイル時間 | 4,296 ms |
コンパイル使用メモリ | 266,476 KB |
実行使用メモリ | 10,880 KB |
最終ジャッジ日時 | 2024-10-22 19:52:55 |
合計ジャッジ時間 | 8,849 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 71 |
ソースコード
#line 1 "1990.cpp" // #pragma GCC target("avx2,avx512f,avx512vl,avx512bw,avx512dq,avx512cd,avx512vbmi,avx512vbmi2,avx512vpopcntdq,avx512bitalg,bmi,bmi2,lzcnt,popcnt") // #pragma GCC optimize("Ofast") #line 2 "/home/sigma/comp/library/template.hpp" #include <bits/stdc++.h> using namespace std; using ll = long long; using uint = unsigned int; using ull = unsigned long long; #define rep(i,n) for(int i=0;i<int(n);i++) #define rep1(i,n) for(int i=1;i<=int(n);i++) #define per(i,n) for(int i=int(n)-1;i>=0;i--) #define per1(i,n) for(int i=int(n);i>0;i--) #define all(c) c.begin(),c.end() #define si(x) int(x.size()) #define pb push_back #define eb emplace_back #define fs first #define sc second template<class T> using V = vector<T>; template<class T> using VV = vector<vector<T>>; template<class T,class U> bool chmax(T& x, U y){ if(x<y){ x=y; return true; } return false; } template<class T,class U> bool chmin(T& x, U y){ if(y<x){ x=y; return true; } return false; } template<class T> void mkuni(V<T>& v){sort(all(v));v.erase(unique(all(v)),v.end());} template<class T> int lwb(const V<T>& v, const T& a){return lower_bound(all(v),a) - v.begin();} template<class T> V<T> Vec(size_t a) { return V<T>(a); } template<class T, class... Ts> auto Vec(size_t a, Ts... ts) { return V<decltype(Vec<T>(ts...))>(a, Vec<T>(ts...)); } template<class S,class T> ostream& operator<<(ostream& o,const pair<S,T> &p){ return o<<"("<<p.fs<<","<<p.sc<<")"; } template<class T> ostream& operator<<(ostream& o,const vector<T> &vc){ o<<"{"; for(const T& v:vc) o<<v<<","; o<<"}"; return o; } constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n-1); } #ifdef LOCAL #define show(x) cerr << "LINE" << __LINE__ << " : " << #x << " = " << (x) << endl void dmpr(ostream& os){os<<endl;} template<class T,class... Args> void dmpr(ostream&os,const T&t,const Args&... args){ os<<t<<" ~ "; dmpr(os,args...); } #define shows(...) cerr << "LINE" << __LINE__ << " : ";dmpr(cerr,##__VA_ARGS__) #define dump(x) cerr << "LINE" << __LINE__ << " : " << #x << " = {"; \ for(auto v: x) cerr << v << ","; cerr << "}" << endl; #else #define show(x) void(0) #define dump(x) void(0) #define shows(...) void(0) #endif template<class D> D divFloor(D a, D b){ return a / b - (((a ^ b) < 0 && a % b != 0) ? 1 : 0); } template<class D> D divCeil(D a, D b) { return a / b + (((a ^ b) > 0 && a % b != 0) ? 1 : 0); } #line 5 "1990.cpp" bool f(V<ll> B){ int N = si(B); auto B_cp = B; V<ll> a(N-1); rep(i,N-1){ a[i] = B[i]; B[i+1] -= a[i]; } if(B[N-1] != 0) return false; rep(i,N-1) if(a[i] < 0) return false; B = B_cp; V<int> p(N); rep(i,N) p[i] = i%2; V<int> q(N); rep(i,N) q[i] = (B[i]+i)%2; if(count(all(p),1) != count(all(q),1)) return false; int d = 0; rep(i,N-1){ d += p[i] - q[i]; if(abs(d) > a[i]) return false; } return true; } void TEST(){ int N,M; cin >> N >> M; set<V<ll>> vis; queue<V<ll>> q; auto push = [&](V<ll> v){ if(vis.count(v)) return; vis.insert(v); q.push(v); }; push(V<ll>(N,0)); while(!q.empty()){ V<ll> v = q.front(); q.pop(); rep(i,N-1) if((v[i]+v[i+1])%2 == 0 && v[i] < M && v[i+1] < M){ v[i]++; v[i+1]++; push(v); v[i]--; v[i+1]--; } } auto dfs = [&](auto self, V<ll> v, int i){ if(i == N){ bool god = vis.count(v); bool res = f(v); if(god != res){ show(v); show(god); show(res); exit(0); } return; } rep(j,M+1){ v[i] = j; self(self,v,i+1); } }; dfs(dfs,V<ll>(N,0),0); cerr << "OK" << endl; exit(0); } bool solve(){ int N; cin >> N; V<ll> B(N); rep(i,N) cin >> B[i]; return f(B); } int main(){ cin.tie(0); ios::sync_with_stdio(false); //DON'T USE scanf/printf/puts !! cout << fixed << setprecision(20); // TEST(); cout << (solve() ? "Yes" : "No") << endl; }