Submission #90914

#	Time	Username	Problem	Language	Result	Execution time	Memory
90914		YottaByte	Trading (IZhO13_trading)	C++14	0 / 100	2067 ms	3840 KiB

trading

#include <algorithm>
#include <stdlib.h>
#include <stdio.h>
#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;
int t[N * 4], h[N * 4];
vector < piii > v;

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

inline void upd(int ql, int qr, int x, int v = 1, int l = 1, int r = n)
{
	push(l, r, v);
	if(l > qr || r < ql) return;
	
	if(ql <= l && r <= qr)
	{
		h[v] = x;
		push(l, r, v);
		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];
}

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

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

void solve(int l, int r, int x)
{
	if(check(l, r) == 0)
	{
		upd(l, r, x);
	}
	
	if(l == r) return;
	
	int m = l + r >> 1;
	solve(l, m, x);
	solve(m + 1, r, x);
}

bool cmp( piii a, piii b )
{
	if( a.sc.fr - a.fr < b.sc.fr - b.fr )
	{
		return true;
	}
	else if(a.fr == b.fr)
	{
		if(a.sc.fr < b.sc.fr)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	else
	{
		return false;
	}
}

main()
{
	scanf("%d%d", &n, &m);
	
	for(int i = 1; i <= m; i++)
	{
		int l, r, x;
		scanf("%d%d%d", &l, &r, &x);
		v.pb(mk( x, mk( l, r ) ));
	}
	
	sort(v.begin(), v.end(), &cmp);
	
	//int cnt = 1;
	//for(auto i : v)
	//{
		//printf("%d %d %d %d\n", cnt++, i.sc.fr, i.sc.sc, i.fr);
	//}
	
	for(int i = 1; i <= m; i++)
	{
		int l = v[i - 1].sc.fr;
		int r = v[i - 1].sc.sc;
		int x = v[i - 1].fr;
		
		solve(l, r, i);
	}
	
	for(int i = 1; i <= n; i++)
	{
		int id = getsum(i, i) - 1;
		if(id >= 0)
			printf("%d ", v[id].fr + i - v[id].sc.fr);
		else printf("0 ");
	}
}
/**
5 2
2 4 6
1 3 2

2 6 7 8 0
----------------------
6 4
1 2 5
4 4 3
5 6 1
6 6 1

5 6 0 3 1 2
----------------------
10 9

7 8 9
10 10 8
9 10 8
10 10 4
6 8 4
3 9 4
4 9 3
1 3 3
4 8 2

3 4 5 5 6 7 9 10 10 9
----------------------
3 4

2 2 4
1 1 4
3 3 1
1 3 0

4 4 2
**/

Compilation message (stderr)

trading.cpp: In function 'void upd(int, int, int, int, int, int)':
trading.cpp:44:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int mid = l + r >> 1;
             ~~^~~
trading.cpp: In function 'int check(int, int, int, int, int)':
trading.cpp:63:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    int mid = l + r >> 1;
              ~~^~~
trading.cpp: In function 'int getsum(int, int, int, int, int)':
trading.cpp:82:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    int mid = l + r >> 1;
              ~~^~~
trading.cpp: In function 'void solve(int, int, int)':
trading.cpp:99:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m = l + r >> 1;
          ~~^~~
trading.cpp: At global scope:
trading.cpp:127:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
trading.cpp: In function 'int main()':
trading.cpp:150:7: warning: unused variable 'x' [-Wunused-variable]
   int x = v[i - 1].fr;
       ^
trading.cpp:129:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~
trading.cpp:134:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &l, &r, &x);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100