oj.uz

Submission #201999

# Submission time Handle Problem Language Result Execution time Memory
201999 2020-02-13T02:53:27 Z _7_7_ Examination (JOI19_examination) C++14
2 / 100
 3000 ms 198712 KB 
#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 forev(i, b, a) for(int i = (b); i >= (a); --i)
#define forn(i, a, b) for(int i = (a); i <= (b); ++i)
#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 = 2e5 + 11;
const db eps = 1e-12, pi = 3.14159265359;
const ll INF = 1e18;

inline int R () {
	char c;
	bool is_negative = 0, started = 0;
	int ans = 0;
	while (1) {
		c = getchar();
		if ((c > '9' || c < '0') && c != '-' && !started)
			continue;
		if ((c > '9' || c < '0') && c != '-' && started)
			break;
		started = 1;
		if (c == '-')
			is_negative = 1;
		else
			ans = ans * 10 + c - '0';
	}

	return ans;
}

int n, q, X[N], Y[N], res[N];
unordered_map < int, int > t[N];


struct node {
	int x, y;
	bool operator < (const node &a) const {	
		return X[x] + Y[y] > X[a.x] + Y[a.y];
	}	
} d[N];

struct query {
	int a, b, c, id;
	bool operator < (const query &x) const {
		return c > x.c;
	}
} e[N];


void inc (int x, int y) {
	x = N - 1 - x;
	y = N - 1 - y;
	while (x < N) {
		int yy = y;
		while (yy < N)  {
			++t[x][yy];
			yy += (yy & -yy);
		}
		x += (x & -x);
	}
}

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


main () {
//	file("");
	n = R(), q = R();
	forn (i, 1, n) {
		d[i].x = R();
		d[i].y = R();
		X[i] = d[i].x;
		Y[i] = d[i].y;
	}

	sort(X + 1, X + 1 + n);
	sort(Y + 1, Y + 1 + n);

	forn (i, 1, n) {
		d[i].x = lower_bound(X + 1, X + 1 + n, d[i].x) - X;
		d[i].y = lower_bound(Y + 1, Y + 1 + n, d[i].y) - Y;
	}



	forn (i, 1, q) {
		e[i].a = R(); 
		e[i].b = R();	
		e[i].c = R();
		e[i].id = i;
		e[i].a = lower_bound(X + 1, X + 1 + n, e[i].a) - X;
		e[i].b = lower_bound(Y + 1, Y + 1 + n, e[i].b) - Y;
	}

	sort(d + 1, d + 1 + n);
	sort(e + 1, e + 1 + q);

	int j = 1;
	forn (i, 1, q) {
		while (j <= n && X[d[j].x] + Y[d[j].y] >= e[i].c) {
			inc(d[j].x, d[j].y);
//			cerr << " + " << d[j].x << ' ' << d[j].y << endl;
			++j;
		}
//		cerr << e[i].a << ' ' << e[i].b << " = " << get(e[i].a, e[i].b) << endl;
		res[e[i].id] = get(e[i].a, e[i].b);
	}

	forn (i, 1, q)
		printf("%d\n", res[i]);
}

Compilation message

examination.cpp: In function 'int R()':
examination.cpp:42:7: warning: variable 'is_negative' set but not used [-Wunused-but-set-variable]
  bool is_negative = 0, started = 0;
       ^~~~~~~~~~~
examination.cpp: At global scope:
examination.cpp:109:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {
       ^

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 11256 KB Output is correct
2 Correct 12 ms 11256 KB Output is correct
3 Correct 13 ms 11384 KB Output is correct
4 Correct 13 ms 11256 KB Output is correct
5 Correct 12 ms 11256 KB Output is correct
6 Correct 12 ms 11256 KB Output is correct
7 Correct 31 ms 14456 KB Output is correct
8 Correct 42 ms 14456 KB Output is correct
9 Correct 32 ms 14456 KB Output is correct
10 Correct 25 ms 13176 KB Output is correct
11 Correct 25 ms 13048 KB Output is correct
12 Correct 18 ms 11512 KB Output is correct
13 Correct 32 ms 14456 KB Output is correct
14 Correct 36 ms 14328 KB Output is correct
15 Correct 38 ms 14404 KB Output is correct
16 Correct 17 ms 11768 KB Output is correct
17 Correct 18 ms 11768 KB Output is correct
18 Correct 14 ms 11512 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3071 ms 198712 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3071 ms 198712 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 11256 KB Output is correct
2 Correct 12 ms 11256 KB Output is correct
3 Correct 13 ms 11384 KB Output is correct
4 Correct 13 ms 11256 KB Output is correct
5 Correct 12 ms 11256 KB Output is correct
6 Correct 12 ms 11256 KB Output is correct
7 Correct 31 ms 14456 KB Output is correct
8 Correct 42 ms 14456 KB Output is correct
9 Correct 32 ms 14456 KB Output is correct
10 Correct 25 ms 13176 KB Output is correct
11 Correct 25 ms 13048 KB Output is correct
12 Correct 18 ms 11512 KB Output is correct
13 Correct 32 ms 14456 KB Output is correct
14 Correct 36 ms 14328 KB Output is correct
15 Correct 38 ms 14404 KB Output is correct
16 Correct 17 ms 11768 KB Output is correct
17 Correct 18 ms 11768 KB Output is correct
18 Correct 14 ms 11512 KB Output is correct
19 Execution timed out 3071 ms 198712 KB Time limit exceeded
20 Halted 0 ms 0 KB -