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Cod sursa(job #973593)
#include <fstream>
#include <iostream>
#include <vector>
#include <iterator>
#include <algorithm>
#define MAXN 100002
using namespace std;
struct Pole
{
Pole(int xx, int l, int r, int c) :
x(xx),
Left(l),
Right(r),
Cost(c)
{}
int x = 0;
int Left = 0;
int Right = 0;
int Cost = 0;
};
ostream& operator << (ostream& os, Pole pole)
{
os << pole.x << " " << pole.Left << " " << pole.Right << " " << pole.Cost;
return os;
}
bool operator < (const Pole& lhs, const Pole& rhs)
{
return lhs.x < rhs.x;
}
pair<int, int> vRightSortedPoles[MAXN];
long long costs[MAXN];
int main()
{
int n;
vector<Pole> vPoles;
fstream fin("stalpi.in", fstream::in);
fstream fout("stalpi.out", fstream::out);
fin >> n;
//cout << n << endl;
vPoles.reserve(n+2);
vPoles.push_back(Pole(0, 0, 0, 0));
for (int i=0; i<n; ++i)
{
int x, l, r, c;
fin >> x >> c >> l >> r;
vPoles.push_back(Pole(x, l, r, c));
}
sort(begin(vPoles), end(vPoles));
for (int i=0; i<n; ++i)
{
vRightSortedPoles[i] = make_pair(vPoles[i+1].x + vPoles[i+1].Right, i+1);
}
sort(begin(vRightSortedPoles), begin(vRightSortedPoles) + n);
int maxPoleX = vRightSortedPoles[n-1].first + 1;
vPoles.push_back(Pole(maxPoleX + 1, 0, 0, 0));
ostream_iterator<int> itOut(cout, " ");
ostream_iterator<Pole> itOutPoles(cout, "\n");
/*copy_n(begin(vPoles), n + 2, itOutPoles);
cout << endl;
for (int i=0; i<n; ++i)
{
cout << vRightSortedPoles[i].first << " " << vRightSortedPoles[i].second << endl;
}
cout << endl;*/
for (int i=1; i<=n; ++i)
{
costs[i] = 1LL << 61;
}
for (int i=0; i<n; ++i)
{
long long minVal = 1LL << 61;
/*Pole pole(vRightSortedPoles[i].first, 0, 0, 0);
auto it = upper_bound(begin(vPoles), end(vPoles), pole);
cout << (it - begin(vPoles)) << " " << it->x << " " << it->Left << " " << it->Right << endl;
pole = Pole(vPoles[vRightSortedPoles[i].second].x - vPoles[vRightSortedPoles[i].second].Left, 0, 0, 0);
it = lower_bound(begin(vPoles), end(vPoles), pole);
cout << (it - begin(vPoles)) << " " << it->x << " " << it->Left << " " << it->Right << endl << endl;*/
int j = 0;
while (j <= n && vPoles[j].x < vPoles[vRightSortedPoles[i].second].x - vPoles[vRightSortedPoles[i].second].Left) ++j;
for (int k=j; k<=n; ++k)
{
minVal = min(minVal, costs[k] + vPoles[vRightSortedPoles[i].second].Cost);
}
int R = n;
while (R >= 1 && vPoles[R].x > vRightSortedPoles[i].first) --R;
cout << j << " " << R << endl;
for (int k=1; k<=R; ++k)
{
costs[k] = min(costs[k], minVal);
}
}
/*for (int i=0; i<=n; ++i)
{
cout << costs[i] << " ";
}
cout << endl;*/
fout << costs[n] << "\n";
return 0;
}