結果

問題 No.2100 [Cherry Alpha C] Two-way Steps
ユーザー moharan627moharan627
提出日時 2022-10-15 13:31:18
言語 C++23
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 180 ms / 2,000 ms
コード長 4,889 bytes
コンパイル時間 5,699 ms
コンパイル使用メモリ 313,932 KB
実行使用メモリ 20,480 KB
最終ジャッジ日時 2024-06-26 19:44:17
合計ジャッジ時間 11,878 ms
ジャッジサーバーID
(参考情報)
judge1 / judge2
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
6,812 KB
testcase_01 AC 3 ms
6,816 KB
testcase_02 AC 3 ms
6,940 KB
testcase_03 AC 2 ms
6,944 KB
testcase_04 AC 133 ms
14,464 KB
testcase_05 AC 106 ms
11,392 KB
testcase_06 AC 21 ms
6,940 KB
testcase_07 AC 26 ms
6,940 KB
testcase_08 AC 132 ms
18,560 KB
testcase_09 AC 104 ms
9,600 KB
testcase_10 AC 55 ms
6,944 KB
testcase_11 AC 100 ms
12,800 KB
testcase_12 AC 73 ms
8,064 KB
testcase_13 AC 83 ms
15,232 KB
testcase_14 AC 63 ms
6,940 KB
testcase_15 AC 87 ms
14,592 KB
testcase_16 AC 70 ms
6,944 KB
testcase_17 AC 61 ms
14,080 KB
testcase_18 AC 90 ms
15,232 KB
testcase_19 AC 161 ms
17,536 KB
testcase_20 AC 35 ms
6,944 KB
testcase_21 AC 72 ms
8,960 KB
testcase_22 AC 69 ms
6,940 KB
testcase_23 AC 120 ms
15,872 KB
testcase_24 AC 171 ms
20,072 KB
testcase_25 AC 173 ms
20,004 KB
testcase_26 AC 173 ms
20,008 KB
testcase_27 AC 171 ms
19,860 KB
testcase_28 AC 174 ms
20,076 KB
testcase_29 AC 170 ms
20,044 KB
testcase_30 AC 168 ms
20,016 KB
testcase_31 AC 180 ms
20,080 KB
testcase_32 AC 171 ms
20,096 KB
testcase_33 AC 175 ms
20,096 KB
testcase_34 AC 93 ms
6,944 KB
testcase_35 AC 83 ms
6,940 KB
testcase_36 AC 82 ms
6,940 KB
testcase_37 AC 76 ms
6,940 KB
testcase_38 AC 89 ms
6,940 KB
testcase_39 AC 67 ms
6,940 KB
testcase_40 AC 67 ms
6,940 KB
testcase_41 AC 66 ms
6,940 KB
testcase_42 AC 66 ms
6,940 KB
testcase_43 AC 66 ms
6,940 KB
testcase_44 AC 112 ms
20,480 KB
testcase_45 AC 109 ms
20,460 KB
testcase_46 AC 109 ms
20,436 KB
testcase_47 AC 110 ms
20,472 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 #

#if !__INCLUDE_LEVEL__

#include __FILE__
int main()
{
    int N,M;cin >> N >> M;
    vl H(N);rep(i,N)cin >> H[i];
    vvl Root(N);
    rep(m,M){
        int X,Y;cin >> X >> Y;
        X-=1;
        Y-=1;
        Root[Y].emplace_back(X);
    }
    vvl DP(N+1,vl(2,-INF));
    DP[0][0]=0;
    DP[0][1]=0;
    rep(j,N){
        fore(i,Root[j]){
            if(H[i]<H[j]){//登る場合
                chmax(DP[j][1],DP[i][0]+H[j]-H[i]);
            }
            else{//下る場合
                chmax(DP[j][0],DP[i][0]);
                chmax(DP[j][0],DP[i][1]);
            }
        }
    }
    ll ans1 = max(DP[N-1][0],DP[N-1][1]);
    if(ans1<0)cout << -1 << "\n";
    else cout << ans1 << "\n";

    vvl DP1(N+1,vl(2,-INF));
    DP1[N-1][0]=0;
    DP1[N-1][1]=0;
    rrep(j,N){
        fore(i,Root[j]){
            if(H[i]>H[j]){//登る場合
                chmax(DP1[i][1],DP1[j][0]+H[i]-H[j]);
            }
            else{//下る場合
                chmax(DP1[i][0],DP1[j][0]);
                chmax(DP1[i][0],DP1[j][1]);
            }
        }
    }
    ll ans2 = max(DP1[0][0],DP1[0][1]);
    if(ans2<0)cout << -1 << "\n";
    else cout << ans2 << "\n";
}

#else
//tie(a, b, c) = t
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i = 0; i < n; i++)
#define rrep(i, n) for(int i = n-1; i >= 0; i--)
#define range(i, m, n) for(int i = m; i < n; i++)
#define fore(i,a) for(auto &i:a)
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define Sum(v) accumulate(all(v),0LL)
#define minv(v) *min_element(all(v))
#define maxv(v) *max_element(all(v))
typedef long long ll;
typedef vector<ll> vl;
typedef vector<vector<ll>> vvl;
const ll INF = 1e16;
const ll MOD1 = 1000000007;
const ll MOD2 = 998244353;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
ll SN(char s){return ll(s-'0');}
ll SN(string s){return stoll(s);}
int alpN(char s){return int(s-'a');}
int AlpN(char s){return int(s-'A');}
int Nalp(int n){return char(n+97);}
int NAlp(int n){return char(n+65);}
using Graph = vector<vector<ll>>;
using GraphCost = vector<vector<pair<ll,ll>>>;
using mint = modint;
using mint1 = modint1000000007;
using mint2 = modint998244353;
using pll = pair<long long, long long>;
template <class T>ostream &operator<<(ostream &o,const vector<T>&v){for(int i=0;i<(int)v.size();i++)o<<(i>0?" ":"")<<v[i];return o;}//vector空白区切り出力
ostream& operator<<(ostream& os, const mint1& N) {return os << N.val();}//mint出力。デフォはmint1
ostream& operator<<(ostream& os, const mint2& N) {return os << N.val();}
template<class T> bool contain(const std::string& s, const T& v) {
    return s.find(v) != std::string::npos;
}
ll max(int x,ll y){return max((ll)x,y);}
ll max(ll x,int y){return max(x,(ll)y);}
ll min(int x,ll y){return min((ll)x,y);}
ll min(ll x,int y){return min(x,(ll)y);}
template <typename T>
struct edge {
    int src, to;
    T cost;
    edge(int to, T cost) : src(-1), to(to), cost(cost) {}
    edge(int src, int to, T cost) : src(src), to(to), cost(cost) {}
    edge& operator=(const int& x) {
        to = x;
        return *this;
    }
    operator int() const { return to; }
};

template <typename T>
using Edges = vector<edge<T> >;
template <typename T>
using WeightedGraph = vector<Edges<T> >;
using UnWeightedGraph = vector<vector<int> >;
template <typename T>
using Matrix = vector<vector<T> >;

//unorderd_mapの拡張…https://qiita.com/hamamu/items/4d081751b69aa3bb3557
template<class T> size_t HashCombine(const size_t seed,const T &v){
    return seed^(std::hash<T>()(v)+0x9e3779b9+(seed<<6)+(seed>>2));
}
/* pair用 */
template<class T,class S> struct std::hash<std::pair<T,S>>{
    size_t operator()(const std::pair<T,S> &keyval) const noexcept {
        return HashCombine(std::hash<T>()(keyval.first), keyval.second);
    }
};
/* vector用 */
template<class T> struct std::hash<std::vector<T>>{
    size_t operator()(const std::vector<T> &keyval) const noexcept {
        size_t s=0;
        for (auto&& v: keyval) s=HashCombine(s,v);
        return s;
    }
};
/* tuple用 */
template<int N> struct HashTupleCore{
    template<class Tuple> size_t operator()(const Tuple &keyval) const noexcept{
        size_t s=HashTupleCore<N-1>()(keyval);
        return HashCombine(s,std::get<N-1>(keyval));
    }
};
template <> struct HashTupleCore<0>{
    template<class Tuple> size_t operator()(const Tuple &keyval) const noexcept{ return 0; }
};
template<class... Args> struct std::hash<std::tuple<Args...>>{
    size_t operator()(const tuple<Args...> &keyval) const noexcept {
        return HashTupleCore<tuple_size<tuple<Args...>>::value>()(keyval);
    }
};
ll ceil(ll a, ll b){
  return (a + b - 1) / b;
}
#endif
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