Submission #90880

#	Time	Username	Problem	Language	Result	Execution time	Memory
90880		YottaByte	Trading (IZhO13_trading)	C++14	0 / 100	13 ms	548 KiB

trading

#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

#define pb push_back
#define mk make_pair
#define fr first
#define endl '\n'
#define sc second
#define pii pair < int, int >
#define piii pair < int, pair < int, int > >

const int N = 3e5 + 1;

int n, m, c;
int t[N * 4], h[N * 4];
vector < pair < pii, pii > > v;

void push(int v, int l, int r)
{
	if(h[v])
	{
		t[v] = (r - l + 1) * h[v];
		h[v + v] = h[v];
		h[v + v + 1] = h[v];
		h[v] = 0;
	}
}

void upd(int ql, int qr, int x, int v = 1, int l = 1, int r = n)
{
	push(v, l, r);
	if(l > qr || r < ql) return;
	
	//cout << l << " " << r << endl;
	if(ql <= l && r <= qr)
	{
		h[v] = x;
		push(v, l, r);
		return;
	}
	else
	{
		int mid = l + r >> 1;
		upd(ql, qr, x, v + v, l, mid);
		upd(ql, qr, x, v + v + 1, mid + 1, r);
	}
	t[v] = t[v + v] + t[v + v + 1];
}

long long getsum(int ql, int qr, int v = 1, int l = 1, int r = n)
{
	push(v, l, r);
	if(l > qr || r < ql) return 0;
	
	if(ql <= l && r <= qr)
		return t[v];
	
	int mid = l + r >> 1;
	return getsum(ql, qr, v + v, l, mid) + 
				 getsum(ql, qr, v + v + 1, mid + 1, r);
}

void solve(int l, int r, int x)
{
	int curr = v[x - 1].fr.fr + (r - v[x - 1].sc.fr);
	int curl = v[x - 1].fr.fr;
	
	int idr = getsum(r, r) - 1;
	int idl = getsum(l, l) - 1;
	if(getsum(l, r) == 0)
	{
		//cout << l << " " << r << endl;
		upd(l, r, x);
		//puts("");
		return;
	}
	else
	{
		if(v[idr].fr.fr + (r - v[idr].sc.fr) < curr)
		{
			if(idl == -1 || v[idl].fr.fr + (l - v[idl].sc.fr) < curl)
			{
				upd(l, r, x);
			}
		}
	}
	
	if(l == r)
	{
		return;
	}
	
	int mid = l + r >> 1;
	solve(l, mid, x);
	solve(mid + 1, r, x);
}

int get(int x, int pos)
{
	//cout << x << endl;
	if(x == 0) return 0;
	
	int res = v[x - 1].fr.fr;
	res += (pos - v[x - 1].sc.fr);
	
	return res;
}

main()
{
	cin >> n >> m;
	c = m;
	
	for(int i = 1; i <= m; i++)
	{
		int l, r, x;
		cin >> l >> r >> x;
		v.pb( mk( mk( x, (r - l + 1) ), mk( l, r ) ) );
	}
	
	sort(v.rbegin(), v.rend());
	for(int i = 1; i <= m; i++)
	{
		int l = v[i - 1].sc.fr;
		int r = v[i - 1].sc.sc;
		
		solve(l, r, i);
	}
	
	//cout << getsum(1, 5) << endl;
	//return 0;
	for(int i = 1; i <= n; i++)
	{
		//cout << i << " ";
		//get(getsum(i, i), i);
		//puts("");
		cout << get(getsum(i, i), i) << " ";
	}
}
/**
5 2
1 3 2
2 4 6

2 6 7 8 0

6 4
1 2 5
4 4 3
6 6 1
5 6 1

5 6 0 3 1 2
**/

Compilation message (stderr)

trading.cpp: In function 'void upd(int, int, int, int, int, int)':
trading.cpp:45:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int mid = l + r >> 1;
             ~~^~~
trading.cpp: In function 'long long int getsum(int, int, int, int, int)':
trading.cpp:60:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid = l + r >> 1;
            ~~^~~
trading.cpp: In function 'void solve(int, int, int)':
trading.cpp:95:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid = l + r >> 1;
            ~~^~~
trading.cpp: At global scope:
trading.cpp:111:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^

• Subtask 1: 0 / 100