Submission #622490

#TimeUsernameProblemLanguageResultExecution timeMemory
622490dooompyWeirdtree (RMI21_weirdtree)C++17
0 / 100
235 ms46896 KiB
#include <bits/stdc++.h> using namespace std; using ll = long long; struct node { ll max, freqmax, smax, sum; }; ll t[300005]; node combine(node a, node b) { if (a.max < b.max) { swap(a, b); } if (a.max > b.max) { return {a.max, a.freqmax, max(a.smax, b.max), a.sum + b.sum}; } else { return {a.max, a.freqmax + b.freqmax, max(a.smax, b.smax), a.sum + b.sum}; } } node tree[300005 * 4]; ll cutoff[300005 * 4]; bool isleaf[300005]; void pushdown(ll x) { // // // cout << x << " " << l << " " << r << " " << cutoff[x] << " " << tree[x].max; if (cutoff[x] >= tree[x].max) { cutoff[x] = 1e10; return; } if (isleaf[x]) { tree[x] = {cutoff[x], 1, 0, cutoff[x]}; cutoff[x] = 1e10; return; } if (cutoff[x] > tree[x].smax) { tree[x].sum += (ll) (tree[x].freqmax * (cutoff[x] - tree[x].max)); tree[x].max = cutoff[x]; } cutoff[2 * x] = min(cutoff[2 * x], cutoff[x]); cutoff[ 2 * x + 1] = min(cutoff[ 2 * x + 1], cutoff[x]); cutoff[x] = 1e10; } void build(ll x, ll l, ll r) { cutoff[x] = 1e10; if (l == r) { tree[x] = {t[l], 1, 0, t[l]}; isleaf[x] = true; return; } ll mid = (l + r) /2; build(2 * x, l, mid); build(2 * x + 1, mid + 1, r); tree[x] = combine(tree[2 * x], tree[2 * x + 1]); } ll n; void initialise(int N, int q, int h[]) { for (ll i = 1; i <= N; i++) { t[i] = h[i]; // // // cout << t[i] << " asd " << endl; } n = N; // // cout << "llialise " << endl; build(1, 1, n); } node getNode(int x, int l, int r, int ql, int qr) { pushdown(x); if (ql <= l && r <= qr) return tree[x]; int mid =(l +r) / 2; if (qr <= mid) return getNode(2 * x, l, mid, ql, qr); else if (ql > mid) return getNode(2 * x + 1, mid + 1, r, ql, qr); return combine(getNode(2 * x, l, mid, ql, qr), getNode(2 * x + 1, mid + 1, r, ql, qr)); } void lazy(ll x, ll l, ll r, ll ql, ll qr, ll lazyval) { pushdown(x); if (ql > r || qr < l || l > r || lazyval > tree[x].max) return; if ((ql <= l && r <= qr && lazyval > tree[x].smax) || (l == r)) { cutoff[x] = lazyval; pushdown(x); return; } # warning may need to fix ll mid = (l + r) / 2; lazy(2 * x, l, mid, ql, qr, lazyval); lazy(2 * x + 1, mid + 1, r, ql, qr, lazyval); tree[x] = combine(tree[2 * x], tree[2 * x + 1]); } ll walkdown(ll x, ll l, ll r, ll ql, ll qr, ll &ct, ll maxcomp) { pushdown(x); if (tree[x].max < maxcomp || l > qr || r < ql) return 0; if (ql <= l && r <= qr && tree[x].freqmax < ct) { ct -= tree[x].freqmax; return 0; } if (l == r) { ct--; return l; } ll mid = (l + r) / 2; ll nextidx = walkdown(2 * x, l, mid, ql, qr, ct, maxcomp); if (nextidx) return nextidx; return walkdown(2 * x + 1, mid + 1, r, ql, qr, ct, maxcomp); } void cut(int l, int r, int k) { while (k > 0) { auto asd = getNode(1, 1, n, l, r); if (asd.max == 0) return; ll curavail = (asd.max - asd.smax) * asd.freqmax; if (curavail <= k) { lazy(1, 1, n, l, r, asd.smax); k -= curavail; continue; } ll m = k % asd.freqmax; ll newval = asd.max - k / asd.freqmax; if (m == 0) { lazy(1, 1, n, l, r, newval); } else { ll idx = walkdown(1, 1, n, l, r, m, asd.max); lazy(1, 1, n, l, idx, newval- 1); lazy(1, 1, n, idx + 1, r, newval); } break; } return; } void setbruh(ll x, ll l, ll r, ll i, ll xx) { pushdown(x); if (l == r) { tree[x] = {xx, 1, 0, xx}; return; } ll mid = (l + r) / 2; if (i <= mid) setbruh(2 * x, l, mid, i, xx); else setbruh(2 * x + 1, mid + 1, r, i, xx); pushdown(2 * x); pushdown(2 * x + 1); tree[x] = combine(tree[2 * x], tree[2 * x + 1]); } void magic(int i, int x ) { // // cout << "magic " << endl; setbruh(1, 1, n, i, x); } ll getSum(int x, int l, int r, int ql, int qr) { pushdown(x); if (l > qr || r < ql) return 0; if (l <= ql && qr <= r) return tree[x].sum; int mid = (l + r) / 2; ll a = getSum(2 * x , l, mid, ql, qr); ll b = getSum(2 * x + 1, mid + 1, r, ql, qr); tree[x] = combine(tree[2 * x], tree[2 * x + 1]); return a + b; } ll inspect(int l, int r) { // // cout << "inspect " << endl; return getSum(1, 1, n, l, r); }

Compilation message (stderr)

weirdtree.cpp:129:3: warning: #warning may need to fix [-Wcpp]
  129 | # warning may need to fix
      |   ^~~~~~~
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