Submission #1000650

#TimeUsernameProblemLanguageResultExecution timeMemory
1000650vjudge1Safety (NOI18_safety)C++17
100 / 100
136 ms22056 KiB
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") //#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3") #include<bits/stdc++.h> using namespace std; #define all(a) a.begin(), a.end() #define rall(a) a.rbegin(), a.rend() #define sz(a) (int)a.size() #define s second #define f first using ll = long long; using pii = pair<int, int>; using pll = pair<ll, ll>; mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()); vector<pii> rid = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}}; vector<pii> dir = {{-1, -1}, {-1, 1}, {1, -1}, {1, 1}}; const int N = 1e6 + 1, mod = 998244353; const ll inf = 1e9; double eps = 1e-15; bool flg = 0; void slv() { ll n, h; cin >> n >> h; ll s[n]; for (int i = 0; i < n; i++) cin >> s[i]; multiset<ll> tl, tr; ll ans = 0; tl.insert(s[0]); tr.insert(s[0]); for (ll i = 1; i < n; i++) { ll x = (*--tl.end()) - h * i; ll y = (*tr.begin()) + h * i; if (x <= s[i] && s[i] <= y) { tl.insert(s[i] + h * i); tr.insert(s[i] - h * i); }else if (y < s[i]) { tr.erase(tr.begin()); tl.insert(y + h * i); tr.insert(s[i] - h * i); tr.insert(s[i] - h * i); ans += (s[i] - y); }else { tl.erase(--tl.end()); tr.insert(x - h * i); tl.insert(s[i] + h * i); tl.insert(s[i] + h * i); ans += (x - s[i]); } } cout << ans; } main() { //freopen("input.txt", "r", stdin); //freopen("output.txt", "w", stdout); ios_base::sync_with_stdio(0); cin.tie(0); int tp = 1; if (flg) cin >> tp; while (tp--) { slv(); } } //wenomechainsama

Compilation message (stderr)

safety.cpp:63:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   63 | main() {
      | ^~~~
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