| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 725961 | 2023-04-18T09:22:41 Z | browntoad | Exhibition (JOI19_ho_t2) | Java 11 | 0 ms | 0 KB |
import java.util.*;
class FastIO extends PrintWriter {
private InputStream stream;
private byte[] buf = new byte[1 << 16];
private int curChar;
private int numChars;
// standard input
public FastIO() { this(System.in, System.out); }
public FastIO(InputStream i, OutputStream o) {
super(o);
stream = i;
}
// file input
public FastIO(String i, String o) throws IOException {
super(new FileWriter(o));
stream = new FileInputStream(i);
}
// throws InputMismatchException() if previously detected end of file
private int nextByte() {
if (numChars == -1) { throw new InputMismatchException(); }
if (curChar >= numChars) {
curChar = 0;
try {
numChars = stream.read(buf);
} catch (IOException e) { throw new InputMismatchException(); }
if (numChars == -1) {
return -1; // end of file
}
}
return buf[curChar++];
}
// to read in entire lines, replace c <= ' '
// with a function that checks whether c is a line break
public String next() {
int c;
do { c = nextByte(); } while (c <= ' ');
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = nextByte();
} while (c > ' ');
return res.toString();
}
public int nextInt() { // nextLong() would be implemented similarly
int c;
do { c = nextByte(); } while (c <= ' ');
int sgn = 1;
if (c == '-') {
sgn = -1;
c = nextByte();
}
int res = 0;
do {
if (c < '0' || c > '9') { throw new InputMismatchException(); }
res = 10 * res + c - '0';
c = nextByte();
} while (c > ' ');
return res * sgn;
}
public double nextDouble() { return Double.parseDouble(next()); }
}
class Pair {
int x;
int y;
// Constructor
public Pair(int x, int y) {
this.x = x;
this.y = y;
}
}
class ArrayOfPairsSorter {
static void sort(Pair[] arr) {
Comparator<Pair> comparator = new Comparator<>() {
@Override
public int compare(Pair p1, Pair p2) {
if (p1.y == p2.y) return p1.x - p2.x;
return p1.y - p2.y;
}
};
Arrays.sort(arr, comparator);
}
}
class joi2019_ho_t2 {
public static void main(String[] args){
FastIO io = new FastIO();
int N = io.nextInt();
int M = io.nextInt();
Pair[] pictures = new Pair[N];
ArrayList<Integer> frame = new ArrayList<Integer>();
for (int i=0; i<N; i++) {
pictures[i] = new Pair(io.nextInt(), io.nextInt());
}
for (int i=0; i<M; i++) {
frame.add(io.nextInt());
}
ArrayOfPairsSorter.sort(pictures);
Collections.sort(frame);
int paintingCounter = N;
int frameCounter = M-1;
for (int i=N-1; i>=0; i--) {
if (frameCounter >= 0) {
if (pictures[i].x <= frame.get(frameCounter)) {
frameCounter -= 1;
}
}
}
System.out.println(M - 1 - frameCounter);
}
}