This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
// #pragma GCC target("avx2")
// #pragma GCC optimize("O3")
// #include <x86intrin.h>
#include <bits/stdc++.h>
#include <chrono>
#include <random>
// @author: Vlapos
namespace operators
{
template <typename T1, typename T2>
std::istream &operator>>(std::istream &in, std::pair<T1, T2> &x)
{
in >> x.first >> x.second;
return in;
}
template <typename T1, typename T2>
std::ostream &operator<<(std::ostream &out, std::pair<T1, T2> x)
{
out << x.first << " " << x.second;
return out;
}
template <typename T1>
std::istream &operator>>(std::istream &in, std::vector<T1> &x)
{
for (auto &i : x)
in >> i;
return in;
}
template <typename T1>
std::ostream &operator<<(std::ostream &out, std::vector<T1> &x)
{
for (auto &i : x)
out << i << " ";
return out;
}
template <typename T1>
std::ostream &operator<<(std::ostream &out, std::set<T1> &x)
{
for (auto &i : x)
out << i << " ";
return out;
}
template <typename T1>
std::ostream &operator<<(std::ostream &out, std::multiset<T1> &x)
{
for (auto &i : x)
out << i << " ";
return out;
}
}
// name spaces
using namespace std;
using namespace operators;
// end of name spaces
// defines
#define ll long long
#define ull unsigned long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define f first
#define s second
#define uint unsigned int
#define all(vc) vc.begin(), vc.end()
// end of defines
// usefull stuff
void boost()
{
ios_base ::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
}
inline int getbit(int &x, int &bt) { return (x >> bt) & 1; }
const int dx4[4] = {-1, 0, 0, 1};
const int dy4[4] = {0, -1, 1, 0};
const int dx8[8] = {-1, -1, -1, 0, 0, 1, 1, 1};
const int dy8[8] = {-1, -0, 1, -1, 1, -1, 0, 1};
const ll INF = 2e18;
const int BIG = (1e9) * 2 + 100;
const int MAXN = (1e5) + 5;
const int MOD7 = (1e9) + 7;
const int MOD9 = (1e9) + 9;
const uint MODFFT = 998244353;
#define int ll
struct test
{
multiset<int> decslp, incslp;
int slp0 = 0, dp0 = 0;
int mvm = 0;
void addSlope(int x)
{
assert(x >= -mvm);
if (incslp.size() and (*incslp.begin()) + mvm <= x)
incslp.insert(x - mvm);
else
decslp.insert(x + mvm);
if (decslp.size() > -slp0)
{
auto cur = *decslp.rbegin() - mvm;
decslp.erase(prev(decslp.end()));
incslp.insert(cur - mvm);
}
if (decslp.size() < -slp0)
{
auto cur = *incslp.begin() + mvm;
incslp.erase(incslp.begin());
decslp.insert(cur + mvm);
}
}
void solve(int testcase)
{
boost();
int n, h;
cin >> n >> h;
for (int i = 0; i < n; ++i)
{
int x;
cin >> x;
slp0--;
mvm += h;
dp0 += max((x + mvm), 0LL);
addSlope(x);
addSlope(x);
}
int mn = dp0;
auto slp = decslp;
int x0 = -mvm;
while (slp.size())
{
int cur = *slp.begin() - mvm;
dp0 += slp0 * (cur - x0);
x0 = cur;
mn = min(mn, dp0);
slp.erase(slp.begin());
slp0++;
}
cout << mn << '\n';
}
};
main()
{
boost();
int q = 1;
// cin >> q;
for (int i = 0; i < q; i++)
{
test t;
t.solve(i);
}
return 0;
}
//[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]//
// //
// Coded by Der_Vlἀpos //
// //
//[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]//
Compilation message (stderr)
safety.cpp: In member function 'void test::addSlope(long long int)':
safety.cpp:117:21: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
117 | if (decslp.size() > -slp0)
| ~~~~~~~~~~~~~~^~~~~~~
safety.cpp:123:21: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
123 | if (decslp.size() < -slp0)
| ~~~~~~~~~~~~~~^~~~~~~
safety.cpp: At global scope:
safety.cpp:165:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
165 | main()
| ^~~~
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