Submission #4727

# Submission time Handle Problem Language Result Execution time Memory
4727 2013-12-22T15:14:00 Z ainta trapezoid (balkan11_trapezoid) C++
100 / 100
119 ms 10548 KB
#pragma warning(disable:4996)
#include<stdio.h>
#include<algorithm>
#define SZ 262144
using namespace std;
int n, D[101000], D2[101000], Mod = 30013, Cnt;
struct IndexTree{
	int a, b;
}IT[501000];
struct trapezoid{
	int a, b, c, d;
	bool operator <(const trapezoid &p)const{
		return a < p.a;
	}
}w[101000], w2[101000];
struct order{
	int a, b;
	bool operator <(const order &p)const{
		return a < p.a;
	}
}ord[201000];
void ins(int a, int b){
	while (a){
		if (D[IT[a].a] < D[b])IT[a].a = b, IT[a].b = 0;
		if (D[IT[a].a] == D[b])IT[a].b = (IT[a].b + D2[b]) % Mod;
		a >>= 1;
	}
}
int Max(int a, int b){
	int r = 0;
	Cnt = 0;
	while (a <= b){
		if (a & 1){
			if (D[r] < D[IT[a].a])r = IT[a].a, Cnt = 0;
			if (D[r] == D[IT[a].a])Cnt += IT[a].b;
		}
		if (!(b & 1)){
			if (D[r] < D[IT[b].a])r = IT[b].a, Cnt = 0;
			if (D[r] == D[IT[b].a])Cnt += IT[b].b;
		}
		a = (a + 1) >> 1, b = (b - 1) >> 1;
	}
	Cnt %= Mod;
	return D[r];
}
int main()
{
	int i, pv = 0, Res = 0, Res2 = 0;
	scanf("%d", &n);
	for (i = 0; i < n; i++){
		scanf("%d%d%d%d", &w[i].a, &w[i].b, &w[i].c, &w[i].d);
	}
	sort(w, w + n);
	for (i = 0; i < n; i++){
		ord[i * 2].a = w[i].c, ord[i * 2].b = i * 2;
		ord[i * 2 + 1].a = w[i].d, ord[i * 2 + 1].b = i * 2 + 1;
	}
	sort(ord, ord + n * 2);
	for (i = 0; i < 2 * n; i++){
		if (ord[i].b & 1)w[ord[i].b >> 1].d = i;
		else w[ord[i].b >> 1].c = i;
	}
	for (i = 0; i < n; i++){
		w2[i] = w[i];
		swap(w2[i].a, w2[i].b);
		w2[i].c = i;
	}
	sort(w2, w2 + n);
	for (i = 0; i < n; i++){
		while (w[i].a>w2[pv].a){
			ins(SZ+w2[pv].d, w2[pv].c+1);
			pv++;
		}
		D[i + 1] = Max(SZ, SZ + w[i].c) + 1;
		D2[i + 1] = Cnt;
		if (!D2[i + 1])D2[i + 1] = 1;
		if (Res < D[i + 1])Res = D[i + 1], Res2 = 0;
		if (Res == D[i + 1])Res2 = (Res2 + D2[i + 1]) % Mod;
	}
	printf("%d %d\n", Res, Res2);
}

Compilation message

trapezoid.cpp:1:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning(disable:4996)
 ^
trapezoid.cpp: In function 'int main()':
trapezoid.cpp:49:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
trapezoid.cpp:51:56: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d", &w[i].a, &w[i].b, &w[i].c, &w[i].d);
                                                        ^
# Verdict Execution time Memory Grader output
1 Correct 0 ms 10548 KB Output is correct
2 Correct 0 ms 10548 KB Output is correct
3 Correct 0 ms 10548 KB Output is correct
4 Correct 0 ms 10548 KB Output is correct
5 Correct 0 ms 10548 KB Output is correct
6 Correct 3 ms 10548 KB Output is correct
7 Correct 3 ms 10548 KB Output is correct
8 Correct 3 ms 10548 KB Output is correct
9 Correct 9 ms 10548 KB Output is correct
10 Correct 19 ms 10548 KB Output is correct
11 Correct 23 ms 10548 KB Output is correct
12 Correct 49 ms 10548 KB Output is correct
13 Correct 69 ms 10548 KB Output is correct
14 Correct 73 ms 10548 KB Output is correct
15 Correct 83 ms 10548 KB Output is correct
16 Correct 93 ms 10548 KB Output is correct
17 Correct 89 ms 10548 KB Output is correct
18 Correct 89 ms 10548 KB Output is correct
19 Correct 99 ms 10548 KB Output is correct
20 Correct 119 ms 10548 KB Output is correct