Submission #220629

#	Time	Username	Problem	Language	Result	Execution time	Memory
220629		_7_7_	Sweeping (JOI20_sweeping)	C++14	1 / 100	18170 ms	1239460 KiB

sweeping

#include <bits/stdc++.h>                                           
 
//#define int long long
//#pragma GCC optimize("Ofast")
//#pragma comment(linker, "/stack:200000000")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
 
 
#define file(s) freopen(s".in","r",stdin); freopen(s".out","w",stdout);
#define all(x) x.begin(), x.end()
#define sz(s) (int)s.size()
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define s second
#define f first
 
 
using namespace std;
 
 
typedef pair < long long, long long > pll;    
typedef pair < int, int > pii;
typedef unsigned long long ull;         
typedef vector < pii > vpii;
typedef vector < int > vi;
typedef long double ldb;  
typedef long long ll;  
typedef double db;                             
 
 
const int dx[] = {1, -1, 0, 0}, dy[] = {0, 0, 1, -1}, block = 333;
const pii base = mp(1171, 3307), Mod = mp(1e9 + 7, 1e9 + 9);
const int inf = 1e9, maxn = 4e5 + 148, mod = 1e9 + 7, N = 1e6 + 5e5 + 11;
const db eps = 1e-12, pi = 3.14159265359;
const ll INF = 1e18;


int n, m, q, x[N], y[N], tp[N], a[N], b[N], z[N];

bool CHECK () {
	for (int i = 1; i <= q; ++i)
		if (tp[i] == 3)
			return 0;

	return 1;
}

map < int, int > t[N];

void upd1 (int x, int y, int z) {
	while (y <= inf) {
		t[x][y] = max(t[x][y], z);
		y |= y + 1;
	}
}

void upd (int x, int y, int z) {
	x = N - x;
	y = inf - y;
	while (x < N) {
		upd1(x, y, z);
		x |= x + 1;
	}
}

int get1 (int x, int y) {
    int res = 0;
	while (y >= 0) {
		if (t[x].count(y))
			res = max(res, t[x][y]);
		y = (y & (y + 1)) - 1;
	}
	return res;
}

int get (int x, int y) {
	x = N - x;
	y = inf - y;
	int res = 0;
	while (x >= 0) {
		res = max(res, get1(x, y));
		x = (x & (x + 1)) - 1;
	}
	return res;
}


main () {
	scanf("%d%d%d", &n, &m, &q);
	for (int i = 1; i <= m; ++i)
		scanf("%d%d", &x[i], &y[i]);
	for (int i = 1; i <= q; ++i) {
		scanf("%d%d", &tp[i], &a[i]);
		if (tp[i] == 4) 
			scanf("%d", &b[i]);		
	}

	if (m <= 2000 && q <= 5000) {
		for (int i = 1; i <= q; ++i) {
			if (tp[i] == 1)
				printf("%d %d\n", x[a[i]], y[a[i]]);
			else if (tp[i] == 3) {
				for (int j = 1; j <= m; ++j)
					if (x[j] <= a[i])
						y[j] = max(y[j], n - a[i]);
			} else if (tp[i] == 2) {
				for (int j = 1; j <= m; ++j)
					if (y[j] <= a[i])
						x[j] = max(x[j], n - a[i]);
			} else {
				x[++m] = a[i];
				y[m] = b[i];
			}
		}
		return 0;
	}

	if (CHECK()) {
		for (int i = 1; i <= q; ++i)
			if (tp[i] == 1)
				printf("%d %d\n", y[a[i]], max(x[a[i]], get(z[a[i]], y[a[i]])));
			else if (tp[i] == 2) 
				upd(i, a[i], n - a[i]);
			else {
				x[++m] = a[i];
				y[m] = b[i];
				z[m] = i;
			}
		return 0;
	}
}

Compilation message (stderr)

sweeping.cpp:89:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {
       ^
sweeping.cpp: In function 'int main()':
sweeping.cpp:90:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d", &n, &m, &q);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sweeping.cpp:92:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &x[i], &y[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sweeping.cpp:94:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &tp[i], &a[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
sweeping.cpp:96:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d", &b[i]);  
    ~~~~~^~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 0 / 53
• Subtask 5: 0 / 25