#include <bits/stdc++.h>
#define pb push_back
#define int int64_t
using namespace std;
constexpr static int MEMORY_FACTOR = 3;
constexpr static int INF = 1e18;
struct SegTree
{
struct Node
{
int sum, min_prefix, max_prefix;
Node(int sum, int min_prefix, int max_prefix) : sum(sum), min_prefix(min_prefix), max_prefix(max_prefix) {}
bool check(int capacity) {return max_prefix - min_prefix > capacity; }
Node() : Node(0, 0, 0) {}
};
static Node merge(Node l, Node r)
{
return Node(l.sum + r.sum, min(l.min_prefix, r.min_prefix + l.sum), max(l.max_prefix, r.max_prefix + l.sum));
}
int n;
vector<Node> data;
SegTree(int n) : n(n), data(n<<2) {}
void set(int l, int r, int index, int i, int val)
{
if (i >= r || l > i)
return;
if (l + 1 == r)
{
data[index] = Node(val, val, val);
return;
}
int mid = (l+r)>>1;
set(l, mid, index<<1, i, val);
set(mid, r, index<<1|1, i, val);
data[index] = merge(data[index<<1], data[index<<1|1]);
}
Node get(int l, int r, int index, int ss, int ee) const
{
if (l >= ee || ss >= r)
return Node(0, INF, -INF);
if (l + 1 == r)
return data[index];
int mid = (l+r)>>1;
Node l_node = get(l, mid, index<<1, ss, ee);
Node r_node = get(mid, r, index<<1|1, ss, ee);
return merge(l_node, r_node);
}
void set(int i, int val) { set(0, n, 1, i, val); }
Node get(int ss, int ee) const { return get(0, n, 1, ss, ee); }
};
vector<array<int,2>> index_sort(const vector<int>& v)
{
vector<array<int, 2>> res(v.size());
for (int i = 0; i < static_cast<int64_t>(v.size()); i++)
res[i] = {v[i], i};
sort(res.begin(), res.end());
return res;
}
int find_min_prefix(const SegTree& st, int ss, int ee)
{
int mp = st.get(ss, ee).min_prefix;
int l = ss, r = ee;
while (r - l > 1)
{
int m = (l+r)>>1;
if (st.get(ss, m).sum + st.get(m, ee).min_prefix == mp)
l = m;
else
r = m;
}
return l;
}
int find_max_prefix(const SegTree& st, int ss, int ee)
{
int mp = st.get(ss, ee).max_prefix;
int l = ss, r = ee;
while (r - l > 1)
{
int m = (l+r)>>1;
if (st.get(ss, m).sum + st.get(m, ee).max_prefix == mp)
l = m;
else
r = m;
}
return l;
}
int find_smallest_distance(const SegTree& st, int cap, int n)
{
int l = -1, r = n;
while (r - l > 1)
{
int m = (l+r)>>1;
if (st.get(m, n).check(cap))
l = m;
else
r = m;
}
return l;
}
vector<int32_t> distribute_candies(vector<int32_t> c, vector<int32_t> l, vector<int32_t> r, vector<int32_t> v)
{
for (int& i : r) i++;
vector<array<int,2>> li = index_sort(l), ri = index_sort(r);
int n = v.size()+1;
int m = c.size();
int ll = 0, rr = 0;
SegTree st(n);
vector<int> res(m);
for (int i = 0; i < m; i++)
{
while (ll < static_cast<int64_t>(li.size()) && li[ll][0] == i)
{
int index = li[ll][1];
st.set(index+1, v[index]);
ll++;
}
while (rr < static_cast<int64_t>(ri.size()) && ri[rr][0] == i)
{
int index = ri[rr][1];
st.set(index+1, 0);
rr++;
}
int ss = find_smallest_distance(st, c[i], n);
if (ss == -1)
{
res[i] = st.get(find_min_prefix(st, 0, n) + 1, n).sum;
}
else
{
int a = find_min_prefix(st, ss, n),
b = find_max_prefix(st, ss, n);
if (a > b)
res[i] = st.get(a+1, n).sum;
else
res[i] = c[i] + st.get(b+1, n).sum;
}
}
return res;
}
Compilation message
candies.cpp: In function 'std::vector<int> distribute_candies(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
candies.cpp:116:16: error: cannot bind non-const lvalue reference of type 'int64_t&' {aka 'long int&'} to an rvalue of type 'int64_t' {aka 'long int'}
116 | for (int& i : r) i++;
| ^
candies.cpp:117:39: error: invalid initialization of reference of type 'const std::vector<long int>&' from expression of type 'std::vector<int>'
117 | vector<array<int,2>> li = index_sort(l), ri = index_sort(r);
| ^
candies.cpp:60:52: note: in passing argument 1 of 'std::vector<std::array<long int, 2> > index_sort(const std::vector<long int>&)'
60 | vector<array<int,2>> index_sort(const vector<int>& v)
| ~~~~~~~~~~~~~~~~~~~^
candies.cpp:131:36: error: 'ri' was not declared in this scope; did you mean 'i'?
131 | while (rr < static_cast<int64_t>(ri.size()) && ri[rr][0] == i)
| ^~
| i
candies.cpp:152:9: error: could not convert 'res' from 'vector<long int>' to 'vector<int>'
152 | return res;
| ^~~
| |
| vector<long int>
