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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#679222 | #9529. Farm Management | ucup-team4435# | RE | 0ms | 3784kb | C++20 | 6.4kb | 2024-10-26 17:09:58 | 2024-10-26 17:09:58 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
#define all(a) begin(a), end(a)
#define len(a) int((a).size())
/*
* Node must have default constructor.
* Node must have static function merge.
* Node must have .push and .clear_after_push methods.
*/
template<typename node>
class segtree {
private:
void build(int v, int vl, int vr) {
if (vr - vl <= 1)
return;
int vm = (vl + vr) >> 1;
build(v << 1, vl, vm);
build(v << 1 | 1, vm, vr);
tree[v] = node::merge(tree[v << 1], tree[v << 1 | 1]);
}
template<typename T>
void build(int v, int vl, int vr, const std::vector<T> &arr) {
if (vl == vr)
return;
if (vr - vl == 1) {
tree[v] = node(arr[vl]);
return;
}
int vm = (vl + vr) >> 1;
build(v << 1, vl, vm, arr);
build(v << 1 | 1, vm, vr, arr);
tree[v] = node::merge(tree[v << 1], tree[v << 1 | 1]);
}
template<typename... Args>
void _update(int v, int vl, int vr, int l, int r, Args&&... args) {
if (r <= vl || vr <= l)
return;
if (l <= vl && vr <= r) {
tree[v].apply(std::forward<Args>(args)..., vl, vr);
return;
}
int vm = (vl + vr) >> 1;
tree[v].push(tree[v << 1], vl, vm);
tree[v].push(tree[v << 1 | 1], vm, vr);
tree[v].clear_after_push();
_update(v << 1, vl, vm, l, r, std::forward<Args>(args)...);
_update(v << 1 | 1, vm, vr, l, r, std::forward<Args>(args)...);
tree[v] = node::merge(tree[v << 1], tree[v << 1 | 1]);
}
node _query(int v, int vl, int vr, int l, int r) {
if (l <= vl && vr <= r)
return tree[v];
int vm = (vl + vr) >> 1;
tree[v].push(tree[v << 1], vl, vm);
tree[v].push(tree[v << 1 | 1], vm, vr);
tree[v].clear_after_push();
if (r <= vm)
return _query(v << 1, vl, vm, l, r);
if (vm <= l)
return _query(v << 1 | 1, vm, vr, l, r);
return node::merge(_query(v << 1, vl, vm, l, r), _query(v << 1 | 1, vm, vr, l, r));
}
template<typename T>
int _find_first(int v, int vl, int vr, int from, const T &checker) {
if (vr <= from)
return n;
if (from <= vl && !checker(tree[v], vl, vr))
return n;
if (vr - vl == 1)
return vl;
int vm = (vl + vr) >> 1;
tree[v].push(tree[v << 1], vl, vm);
tree[v].push(tree[v << 1 | 1], vm, vr);
tree[v].clear_after_push();
int res = _find_first(v << 1, vl, vm, from, checker);
return res == n ? _find_first(v << 1 | 1, vm, vr, from, checker) : res;
}
template<typename T>
int _find_last(int v, int vl, int vr, int from, const T &checker) {
if (from <= vl)
return -1;
if (vr <= from && !checker(tree[v], vl, vr))
return -1;
if (vr - vl == 1)
return vl;
int vm = (vl + vr) >> 1;
tree[v].push(tree[v << 1], vl, vm);
tree[v].push(tree[v << 1 | 1], vm, vr);
tree[v].clear_after_push();
int res = _find_last(v << 1 | 1, vm, vr, from, checker);
return res == -1 ? _find_last(v << 1, vl, vm, from, checker) : res;
}
public:
int n;
std::vector<node> tree;
segtree(int n) : n(n), tree(4 * n, node()) {
build(1, 0, n);
}
template<typename T>
segtree(const std::vector<T> &arr) : n(arr.size()), tree(4 * n) {
build(1, 0, n, arr);
}
int size() const {
return n;
}
template<typename... Args>
void update(int l, int r, Args&&... args) {
if (r <= l)
return;
_update(1, 0, n, l, r, std::forward<Args>(args)...);
}
node query(int l, int r) {
assert(std::max(0, l) < std::min(n, r)); // or return node() in this case
return _query(1, 0, n, l, r);
}
// Trying to find first true on the interval [from, n).
// Returns n if not found.
template<typename T>
int find_first(int from, const T &checker) {
return _find_first(1, 0, n, from, checker);
}
// Trying to find last true on the interval [0, from).
// Returns -1 if not found.
template<typename T>
int find_last(int from, const T &checker) {
return _find_last(1, 0, n, from, checker);
}
};
struct node {
ll cost = 0, lens = 0;
void apply(ll x, ll y, int /* vl */, int /* vr */) {
cost = x;
lens = y;
}
void push(node /* &child */, int /* cl */, int /* cr */) {}
void clear_after_push() {}
static node merge(const node &left, const node &right) {
node res;
res.cost = left.cost + right.cost;
res.lens = left.lens + right.lens;
return res;
}
};
int main() {
cin.tie(nullptr)->sync_with_stdio(false);
int n, m;
cin >> n >> m;
vector<array<ll, 3>> a(n);
ll sum_l = 0, cur_cost = 0;
for (auto &[w, l, r] : a) {
cin >> w >> l >> r;
sum_l += l;
cur_cost += w * l;
}
sort(all(a));
reverse(all(a));
segtree<node> tree(n);
for (int i = 0; i < n; i++) {
ll cur_len = a[i][2] - a[i][1];
tree.update(i, i + 1, cur_len * a[i][0], cur_len);
}
auto solve = [&]() {
assert(sum_l >= 0);
ll need = m - sum_l;
assert(need >= 0);
int pos = tree.find_first(0, [&](const node &nd, int, int) {
if (nd.lens >= need) {
return true;
}
need -= nd.lens;
return false;
});
assert(pos < n);
ll res = cur_cost;
if (pos > 0) {
res += tree.query(0, pos).cost;
}
res += need * a[pos][0];
return res;
};
ll ans = solve();
for (int i = 0; i < n; i++) {
ll cur_len = a[i][2] - a[i][1];
sum_l -= a[i][1];
cur_cost -= a[i][1] * a[i][0];
tree.update(i, i + 1, m * a[i][0], m);
ans = max(ans, solve());
tree.update(i, i + 1, cur_len * a[i][0], cur_len);
cur_cost += a[i][1] * a[i][0];
sum_l += a[i][1];
}
cout << ans << '\n';
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3740kb
input:
5 17 2 3 4 6 1 5 8 2 4 4 3 3 7 5 5
output:
109
result:
ok single line: '109'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3784kb
input:
12 62 503792 9 10 607358 1 3 600501 10 10 33249 4 4 774438 6 6 197692 3 6 495807 8 8 790225 5 9 77272 3 8 494819 4 9 894779 3 9 306279 5 6
output:
35204500
result:
ok single line: '35204500'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3548kb
input:
15 32 835418 2 3 178262 1 3 527643 2 2 519710 1 1 774544 3 3 82312 1 1 808199 1 1 809396 1 3 255882 1 3 80467 1 3 874973 1 3 813965 1 2 198275 1 2 152356 1 3 802055 1 1
output:
22000255
result:
ok single line: '22000255'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3600kb
input:
13 20 526447 1 1 807398 2 2 4167 1 2 944031 2 2 830685 2 2 394251 1 2 505011 1 2 968848 1 1 58170 1 3 32504 1 1 792273 3 3 196120 1 2 714507 1 1
output:
12878768
result:
ok single line: '12878768'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3604kb
input:
13 32 582584 1 3 335440 3 3 971984 1 2 864169 1 2 528515 1 1 382399 1 2 459855 1 2 406909 2 3 66780 2 3 885118 3 3 434844 1 2 93331 1 3 502509 1 3
output:
22065034
result:
ok single line: '22065034'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3600kb
input:
12 77 30244 1 7 518214 3 8 486001 8 9 152634 2 3 180255 3 4 791887 1 6 635820 2 9 881171 3 5 337905 3 8 683182 5 5 300786 3 6 339094 7 9
output:
50453764
result:
ok single line: '50453764'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3536kb
input:
10 3923726 826284 215861 638800 471693 146746 886003 140800 532315 684546 673434 604071 814259 170671 299465 525449 104262 689547 855391 215333 591975 803421 795321 31606 984783 103838 361911 601318 145693 450227 686945
output:
1597735409747
result:
ok single line: '1597735409747'
Test #8:
score: -100
Runtime Error
input:
100000 16648414311 252800 55607 195981 157144 548469 789695 643048 2 2 907957 3 3 32532 231618 316365 194428 227513 762023 4231 393553 699179 898052 3 5 507551 3 5 747498 1 4 857939 9 9 440056 764429 796585 495571 117772 838593 4059 551203 870687 60877 597981 770178 593237 4 10 438147 218335 370780 ...