結果

問題 No.1990 Candy Boxes
ユーザー t98slidert98slider
提出日時 2022-06-24 22:32:28
言語 C++14
(gcc 13.2.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 6,062 bytes
コンパイル時間 1,671 ms
コンパイル使用メモリ 178,016 KB
実行使用メモリ 15,276 KB
最終ジャッジ日時 2023-08-12 23:07:59
合計ジャッジ時間 5,857 ms
ジャッジサーバーID
(参考情報)
judge14 / judge11
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
4,376 KB
testcase_01 AC 2 ms
4,384 KB
testcase_02 WA -
testcase_03 WA -
testcase_04 WA -
testcase_05 AC 1 ms
4,380 KB
testcase_06 AC 2 ms
4,380 KB
testcase_07 AC 2 ms
4,380 KB
testcase_08 AC 2 ms
4,376 KB
testcase_09 AC 1 ms
4,384 KB
testcase_10 WA -
testcase_11 WA -
testcase_12 AC 21 ms
7,520 KB
testcase_13 AC 21 ms
7,936 KB
testcase_14 AC 16 ms
8,184 KB
testcase_15 AC 16 ms
8,644 KB
testcase_16 AC 17 ms
9,352 KB
testcase_17 AC 17 ms
9,588 KB
testcase_18 AC 17 ms
9,532 KB
testcase_19 AC 23 ms
9,044 KB
testcase_20 AC 24 ms
10,052 KB
testcase_21 AC 23 ms
9,592 KB
testcase_22 AC 19 ms
8,076 KB
testcase_23 AC 25 ms
9,188 KB
testcase_24 AC 24 ms
9,068 KB
testcase_25 AC 33 ms
11,704 KB
testcase_26 WA -
testcase_27 WA -
testcase_28 AC 24 ms
13,036 KB
testcase_29 WA -
testcase_30 AC 22 ms
11,220 KB
testcase_31 WA -
testcase_32 WA -
testcase_33 WA -
testcase_34 WA -
testcase_35 AC 26 ms
10,772 KB
testcase_36 WA -
testcase_37 AC 20 ms
10,396 KB
testcase_38 AC 16 ms
8,820 KB
testcase_39 AC 19 ms
9,500 KB
testcase_40 WA -
testcase_41 WA -
testcase_42 WA -
testcase_43 WA -
testcase_44 WA -
testcase_45 AC 23 ms
12,624 KB
testcase_46 WA -
testcase_47 WA -
testcase_48 WA -
testcase_49 WA -
testcase_50 AC 1 ms
4,380 KB
testcase_51 AC 2 ms
4,376 KB
testcase_52 AC 1 ms
4,376 KB
testcase_53 WA -
testcase_54 AC 2 ms
4,384 KB
testcase_55 AC 2 ms
4,380 KB
testcase_56 WA -
testcase_57 AC 2 ms
4,380 KB
testcase_58 AC 2 ms
4,380 KB
testcase_59 WA -
testcase_60 AC 2 ms
4,380 KB
testcase_61 AC 2 ms
4,376 KB
testcase_62 AC 2 ms
4,376 KB
testcase_63 AC 1 ms
4,380 KB
testcase_64 AC 1 ms
4,376 KB
testcase_65 AC 29 ms
11,128 KB
testcase_66 AC 23 ms
9,864 KB
testcase_67 WA -
testcase_68 AC 16 ms
7,768 KB
testcase_69 WA -
testcase_70 AC 27 ms
11,396 KB
testcase_71 WA -
testcase_72 WA -
testcase_73 AC 27 ms
11,148 KB
testcase_74 WA -
testcase_75 AC 17 ms
9,300 KB
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 #

#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define drep(i,j,n) for(int i=0;i<(int)(n-1);i++)for(int j=i+1;j<(int)(n);j++)
#define trep(i,j,k,n) for(int i=0;i<(int)(n-2);i++)for(int j=i+1;j<(int)(n-1);j++)for(int k=j+1;k<(int)(n);k++)
#define codefor int test;scanf("%d",&test);while(test--)
#define INT(...) int __VA_ARGS__;in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__;in(__VA_ARGS__)
#define yes(ans) if(ans)printf("yes\n");else printf("no\n")
#define Yes(ans) if(ans)printf("Yes\n");else printf("No\n")
#define YES(ans) if(ans)printf("YES\n");else printf("NO\n")
#define popcount(v) __builtin_popcountll(v)
#define vector2d(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__))
#define vector3d(type,name,h,w,...) vector<vector<vector<type>>>name(h,vector<vector<type>>(w,vector<type>(__VA_ARGS__)))
#define vector4d(type,name,h,w,d,...) vector<vector<vector<vector<type>>>>name(h,vector<vector<vector<type>>>(w,vector<vector<type>>(d,vector<type>(__VA_ARGS__))))
using namespace std;
using ll = long long;
template<class T> using rpriority_queue = priority_queue<T, vector<T>, greater<T>>;
const int MOD=1000000007;
const int MOD2=998244353;
const int INF=1<<30;
const ll INF2=1LL<<60;
void scan(int& a){scanf("%d",&a);}
void scan(long long& a){scanf("%lld",&a);}
template<class T,class L>void scan(pair<T, L>& p){scan(p.first);scan(p.second);}
template<class T,class U,class V>void scan(tuple<T,U,V>& p){scan(get<0>(p));scan(get<1>(p));scan(get<2>(p));}
template<class T, size_t size> void scan(array<T, size>& a){ for(auto&& i : a) scan(i);}
template<class T> void scan(T& a){cin>>a;}
template<class T> void scan(vector<T>& vec){for(auto&& it:vec)scan(it);}
void in(){}
template <class Head, class... Tail> void in(Head& head, Tail&... tail){scan(head);in(tail...);}
void print(const int& a){printf("%d",a);}
void print(const long long& a){printf("%lld",a);}
void print(const double& a){printf("%.15lf",a);}
template<class T,class L>void print(const pair<T, L>& p){print(p.first);putchar(' ');print(p.second);}
template<class T> void print(const T& a){cout<<a;}
template<class T> void print(const vector<T>& vec){if(vec.empty())return;print(vec[0]);for(auto it=vec.begin();++it!= vec.end();){putchar(' ');print(*it);}}
void out(){putchar('\n');}
template<class T> void out(const T& t){print(t);putchar('\n');}
template <class Head, class... Tail> void out(const Head& head,const Tail&... tail){print(head);putchar(' ');out(tail...);}
template<class T> void dprint(const T& a){cerr<<a;}
template<class T> void dprint(const vector<T>& vec){if(vec.empty())return;cerr<<vec[0];for(auto it=vec.begin();++it!= vec.end();){cerr<<" "<<*it;}}
void debug(){cerr<<'\n';}
template<class T> void debug(const T& t){dprint(t);cerr<<endl;}
template <class Head, class... Tail> void debug(const Head& head, const Tail&... tail){dprint(head);cerr<<" ";debug(tail...);}
ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }

struct dsu {
  public:
    dsu() : _n(0) {}
    dsu(int n) : _n(n), parent_or_size(n, -1) {}

    int merge(int a, int b) {
        assert(0 <= a && a < _n);
        assert(0 <= b && b < _n);
        int x = leader(a), y = leader(b);
        if (x == y) return x;
        if (-parent_or_size[x] < -parent_or_size[y]) std::swap(x, y);
        parent_or_size[x] += parent_or_size[y];
        parent_or_size[y] = x;
        return x;
    }

    bool same(int a, int b) {
        assert(0 <= a && a < _n);
        assert(0 <= b && b < _n);
        return leader(a) == leader(b);
    }

    int leader(int a) {
        assert(0 <= a && a < _n);
        if (parent_or_size[a] < 0) return a;
        return parent_or_size[a] = leader(parent_or_size[a]);
    }

    int size(int a) {
        assert(0 <= a && a < _n);
        return -parent_or_size[leader(a)];
    }

    std::vector<std::vector<int>> groups() {
        std::vector<int> leader_buf(_n), group_size(_n);
        for (int i = 0; i < _n; i++) {
            leader_buf[i] = leader(i);
            group_size[leader_buf[i]]++;
        }
        std::vector<std::vector<int>> result(_n);
        for (int i = 0; i < _n; i++) {
            result[i].reserve(group_size[i]);
        }
        for (int i = 0; i < _n; i++) {
            result[leader_buf[i]].push_back(i);
        }
        result.erase(
            std::remove_if(result.begin(), result.end(),
                           [&](const std::vector<int>& v) { return v.empty(); }),
            result.end());
        return result;
    }

  private:
    int _n;
    // root node: -1 * component size
    // otherwise: parent
    std::vector<int> parent_or_size;
};

int main(){
    INT(n);
    vector<int> a(n);
    in(a);
    dsu uf(n);
    for(int i = 0; i + 1 < n; i++){
        if(a[i] >= 1 && a[i + 1] >= 1){
            //if(a[i] % 2 == 1 && a[i + 1] == 1)continue;
            uf.merge(i, i + 1);
        }
    }
    auto G = uf.groups();
    for(auto &&vec:G){
        ll s1 = 0, s2 = 0;
        sort(all(vec));
        if(a[vec[0]]==0)continue;
        for(int i = 0; i < vec.size(); i+= 2){
            s1 += a[vec[i]];
        }
        for(int i = 1 ; i < vec.size(); i+=2){
            s2 += a[vec[i]];
        }
        if(s1 != s2){
            out("No");
            return 0;
        }
        bool flag = false;
        for(int i = 0; i + 1 < vec.size(); i++){
            if(a[vec[i]] % 2 == a[vec[i+1]] % 2){
                flag = true;
                break;
            }
        }
        if(!flag){
            out("No");
            return 0;
        }
        flag = true;
        int v = 0, cnt = 0;
        for(int i = 1; i + 1 < vec.size(); i++){
            if(a[vec[i]] % 2 == 1){
                if(a[vec[i]-1] % 2 == 1 && a[vec[i]+1] % 2 == 1){
                    flag = false;
                    break;
                }
            }
        }
        if(!flag){
            out("No");
            return 0;
        }
    }
    out("Yes");
}
0