結果
問題 | No.2100 [Cherry Alpha C] Two-way Steps |
ユーザー | woodywoody |
提出日時 | 2022-10-15 16:05:10 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 214 ms / 2,000 ms |
コード長 | 4,727 bytes |
コンパイル時間 | 3,979 ms |
コンパイル使用メモリ | 237,640 KB |
実行使用メモリ | 27,300 KB |
最終ジャッジ日時 | 2024-06-26 19:56:58 |
合計ジャッジ時間 | 11,303 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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 | 2 ms
6,812 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 165 ms
20,352 KB |
testcase_05 | AC | 131 ms
16,128 KB |
testcase_06 | AC | 23 ms
6,944 KB |
testcase_07 | AC | 28 ms
7,552 KB |
testcase_08 | AC | 156 ms
24,064 KB |
testcase_09 | AC | 122 ms
14,336 KB |
testcase_10 | AC | 61 ms
9,088 KB |
testcase_11 | AC | 115 ms
17,280 KB |
testcase_12 | AC | 87 ms
11,520 KB |
testcase_13 | AC | 94 ms
18,688 KB |
testcase_14 | AC | 73 ms
9,344 KB |
testcase_15 | AC | 101 ms
18,304 KB |
testcase_16 | AC | 82 ms
9,856 KB |
testcase_17 | AC | 64 ms
16,256 KB |
testcase_18 | AC | 95 ms
18,944 KB |
testcase_19 | AC | 187 ms
24,064 KB |
testcase_20 | AC | 40 ms
8,192 KB |
testcase_21 | AC | 82 ms
12,160 KB |
testcase_22 | AC | 77 ms
9,728 KB |
testcase_23 | AC | 141 ms
21,120 KB |
testcase_24 | AC | 207 ms
27,300 KB |
testcase_25 | AC | 207 ms
27,136 KB |
testcase_26 | AC | 206 ms
27,264 KB |
testcase_27 | AC | 209 ms
27,240 KB |
testcase_28 | AC | 208 ms
27,264 KB |
testcase_29 | AC | 214 ms
27,264 KB |
testcase_30 | AC | 208 ms
27,260 KB |
testcase_31 | AC | 207 ms
27,260 KB |
testcase_32 | AC | 209 ms
27,248 KB |
testcase_33 | AC | 208 ms
27,152 KB |
testcase_34 | AC | 111 ms
11,904 KB |
testcase_35 | AC | 94 ms
12,288 KB |
testcase_36 | AC | 94 ms
12,160 KB |
testcase_37 | AC | 89 ms
11,648 KB |
testcase_38 | AC | 103 ms
12,288 KB |
testcase_39 | AC | 77 ms
10,496 KB |
testcase_40 | AC | 77 ms
10,496 KB |
testcase_41 | AC | 75 ms
10,624 KB |
testcase_42 | AC | 77 ms
10,624 KB |
testcase_43 | AC | 75 ms
10,880 KB |
testcase_44 | AC | 116 ms
26,000 KB |
testcase_45 | AC | 117 ms
25,856 KB |
testcase_46 | AC | 115 ms
25,952 KB |
testcase_47 | AC | 117 ms
25,984 KB |
ソースコード
// #define _GLIBCXX_DEBUG #include<bits/stdc++.h> #include<atcoder/all> #define rep(i,b) for(int i=0;i<b;i++) #define rrep(i,b) for(int i=b-1;i>=0;i--) #define rep1(i,b) for(int i=1;i<b;i++) #define repx(i,x,b) for(int i=x;i<b;i++) #define rrepx(i,x,b) for(int i=b-1;i>=x;i--) #define fore(i,a) for(auto i:a) #define fore1(i,a) for(auto &i:a) #define rng(x) (x).begin(), (x).end() #define rrng(x) (x).rbegin(), (x).rend() #define sz(x) ((int)(x).size()) #define pb push_back #define fi first #define se second #define pcnt __builtin_popcountll using namespace std; using namespace atcoder; using ll = long long; using ld = long double; template<typename T> using mpq = priority_queue<T, vector<T>, greater<T>>; template<typename T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; } template<typename T> bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; } template<typename T> ll sumv(const vector<T>&a){ll res(0);for(auto&&x:a)res+=x;return res;} bool yn(bool a) { if(a) {cout << "Yes" << endl; return 1;} else {cout << "No" << endl; return 0;}} #define dame { cout << "No" << endl; return 0;} #define dame1 { cout << -1 << endl; return 0;} #define test(x) cout << "test" << x << endl; #define deb(x,y) cout << x << " " << y << endl; #define debp(p) cout << p.fi << " " << p.se << endl; #define deb3(x,y,z) cout << x << " " << y << " " << z << endl; #define deb4(x,y,z,x2) cout << x << " " << y << " " << z << " " << x2 << endl; #define out cout << ans << endl; #define outd cout << fixed << setprecision(20) << ans << endl; #define outm cout << ans.val() << endl; #define outv fore(yans , ans) cout << yans << "\n"; #define outdv fore(yans , ans) cout << yans.val() << "\n"; #define show(x) cerr<<#x<<" = "<<x<<endl; #define showdeb(x,y) cerr<<#x<<" = "<<x<<" : "<<#y<<" = "<<y<<endl; #define showv(v) {fore(vy , v) {cout << vy << " ";} cout << endl;} #define showv2(v) fore(vy , v) cout << vy << "\n"; #define showvm(v) {fore(vy , v) {cout << vy.val() << " ";} cout << endl;} #define showvm2(v) fore(vy , v) cout << vy.val() << "\n"; using pll = pair<ll,ll>;using pil = pair<int,ll>;using pli = pair<ll,int>;using pii = pair<int,int>;using pdd = pair<ld,ld>; using tp = tuple<int ,int ,int>; using vi = vector<int>;using vd = vector<ld>;using vl = vector<ll>;using vs = vector<string>;using vb = vector<bool>; using vpii = vector<pii>;using vpli = vector<pli>;using vpll = vector<pll>;using vpil = vector<pil>; using vvi = vector<vector<int>>;using vvl = vector<vector<ll>>;using vvs = vector<vector<string>>;using vvb = vector<vector<bool>>; using vvpii = vector<vector<pii>>;using vvpli = vector<vector<pli>>;using vvpll = vector<vpll>;using vvpil = vector<vpil>; using mint = modint998244353; using vm = vector<mint>; using vvm = vector<vector<mint>>; vector<int> dx={1,0,-1,0,1,1,-1,-1},dy={0,1,0,-1,1,-1,1,-1}; ll gcd(ll a, ll b) { return a?gcd(b%a,a):b;} ll lcm(ll a, ll b) { return a/gcd(a,b)*b;} #define yes {cout <<"Yes"<<endl;} #define yesr { cout <<"Yes"<<endl; return 0;} #define no {cout <<"No"<<endl;} #define nor { cout <<"No"<<endl; return 0;} const double eps = 1e-10; const ll LINF = 1001002003004005006ll; const int INF = 1001001001; struct edge{ int from,to; ll cost; edge(int from_=0,int to_=0,ll cost_=0) : from(from_),to(to_),cost(cost_) {} }; void solve(){ int n,m; cin>>n>>m; vl h(n); rep(i,n) cin>>h[i]; vector<vector<edge>> e1(n),e2(n); rep(i,m){ int a,b; cin>>a>>b; a--; b--; if (b < a) swap(a,b); e1[a].pb(edge(a,b,0)); e2[b].pb(edge(b,a,0)); } vvl dp(n,vl(2,-LINF)); dp[0][0] = 0; rep(i,n){ fore(y , e1[i]){ int b = y.to; if (h[b] > h[i]){ ll cp = h[b] - h[i]; if (dp[i][0] != -LINF) chmax(dp[b][1] , dp[i][0] + cp); }else{ if (dp[i][0] != -LINF) chmax(dp[b][0] , dp[i][0]); if (dp[i][1] != -LINF) chmax(dp[b][0] , dp[i][1]); } } } ll ans = max(dp[n-1][0] , dp[n-1][1]); if (ans == -LINF) cout << -1 << endl; else out; vvl dp2(n,vl(2,-LINF)); dp2[n-1][0] = 0; rrep(i,n){ fore(y , e2[i]){ int b = y.to; if (h[b] > h[i]){ ll cp = h[b] - h[i]; if (dp2[i][0] != -LINF) chmax(dp2[b][1] , dp2[i][0] + cp); }else{ if (dp2[i][0] != -LINF) chmax(dp2[b][0] , dp2[i][0]); if (dp2[i][1] != -LINF) chmax(dp2[b][0] , dp2[i][1]); } } } ans = max(dp2[0][0] , dp2[0][1]); if (ans == -LINF) cout << -1 << endl; else out; } int main(){ solve(); return 0; }