結果
問題 | No.1294 マウンテン数列 |
ユーザー | Enjapma_kyopro |
提出日時 | 2020-11-21 03:09:10 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 291 ms / 2,000 ms |
コード長 | 3,769 bytes |
コンパイル時間 | 1,625 ms |
コンパイル使用メモリ | 173,420 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-07-23 14:21:43 |
合計ジャッジ時間 | 4,179 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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
6,944 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 24 ms
6,940 KB |
testcase_06 | AC | 35 ms
6,940 KB |
testcase_07 | AC | 2 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,944 KB |
testcase_09 | AC | 2 ms
6,944 KB |
testcase_10 | AC | 291 ms
6,944 KB |
testcase_11 | AC | 291 ms
6,940 KB |
testcase_12 | AC | 290 ms
6,944 KB |
testcase_13 | AC | 277 ms
6,944 KB |
testcase_14 | AC | 230 ms
6,944 KB |
testcase_15 | AC | 277 ms
6,940 KB |
testcase_16 | AC | 228 ms
6,940 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; // using mint = long double; // using mint = modint998244353; // using mint = modint1000000007; typedef long long ll; typedef pair<ll, ll> P; typedef pair<P, ll> T; typedef pair<ll, vector<ll>> Pd; const ll INF = 1e18; const ll fact_table = 3200008; priority_queue <ll> pql; priority_queue <P> pqp; //big priority queue priority_queue <ll, vector<ll>, greater<ll> > pqls; priority_queue <P, vector<P>, greater<P> > pqps; //small priority queue //top pop ll dx[8] = {1, 0, -1, 0, 1, 1, -1, -1}; ll dy[8] = {0, 1, 0, -1, -1, 1, 1, -1}; //↓,→,↑,← /* #define endl "\n" #ifdef ENJAPMA #undef endl #endif */ #define p(x) cout<<x<<endl; #define el cout<<endl; #define pe(x) cout<<x<<" "; #define ps(x) cout<<fixed<<setprecision(25)<<x<<endl; #define pu(x) cout<<(x); #define pb push_back #define lb lower_bound #define ub upper_bound #define pc(x) cout << x << ","; #define rep(i, n) for (ll i = 0; i < (n); i ++) #define rep2(i, a, b) for (ll i = a; i <= (b); i++) #define rep3(i, a, b) for (ll i = a; i >= (b); i--) typedef vector<ll> vec; typedef vector<vector<ll>> mat; const ll mod = 998244353ll; // const ll mod = 1000000007ll; ll mypow(ll a, ll b, ll m = mod) {ll x = 1; while (b) {while (!(b & 1)) {(a *= a) %= m; b >>= 1;}(x *= a) %= m; b--;} return x;} vec readvec(ll read) { vec res(read); for (int i = 0; i < read; i++) { cin >> res[i]; } return res;} void YES(bool cond) { if (cond) { p("YES");} else { p("NO");} return;} void Yes(bool cond) { if (cond) { p("Yes");} else { p("No");} return;} void line() { p("--------------------"); return;} /* ll fact[fact_table + 5], rfact[fact_table + 5]; void c3_init() { fact[0] = rfact[0] = 1; for (ll i = 1; i <= fact_table; i++) { fact[i] = (fact[i - 1] * i) % mod; } rfact[fact_table] = mypow(fact[fact_table], mod - 2, mod); for (ll i = fact_table; i >= 1; i--) { rfact[i - 1] = rfact[i] * i; rfact[i - 1] %= mod; } return; } ll c3(ll n, ll r) { return (((fact[n] * rfact[r]) % mod ) * rfact[n - r]) % mod; } */ bool icpc = false; bool multicase = false; ll n; ll x[2505], xsum[2505]; ll dp[2505]; ll table[2505]; bool solve() { cin >> n; for (int i = 1; i <= n; i++) { cin >> x[i]; } reverse(x + 1, x + n + 1); dp[2] = 1; for (int d = 1; d <= 2500; d++) { bool ok = true; for (int i = 1; i < n; i++) { if (x[i] - x[i + 1] > d) ok = false; } if (!ok) { table[d] = 0; continue; } for (int i = 0; i <= n; i++) { dp[i] = xsum[i] = 0; } dp[2] = xsum[2] = 2; for (int i = 3; i <= n; i++) { ll ok = i, ng = 1; while (ok - ng > 1) { ll mid = (ok + ng) / 2; if (abs(x[mid - 1] - x[i]) <= d) { ok = mid; } else { ng = mid; } } dp[i] = xsum[i - 1] + (mod - xsum[ok - 1]); dp[i] %= mod; xsum[i] = xsum[i - 1] + dp[i]; xsum[i] %= mod; } ll ans = xsum[n]; table[d] = ans; } ll ans = 0; for (int i = 1; i <= 2500; i++) { ll r = table[i] + mod - table[i - 1]; ans += (r * i) % mod; ans %= mod; } p(ans); return true; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); if (icpc) { while (solve()); return 0; } ll q, testcase = 1; if (multicase) { cin >> q; } else { q = 1; } while (q--) { // pu("Case ");pu("#");pu(testcase);pu(": "); solve(); testcase++; } // solve(); return 0; }