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ColoredPaper.java
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ColoredPaper.java
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
public class ColoredPaper {
static int[][] resultArr = new int[100][100];
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int paper = Integer.parseInt(br.readLine());
int count = 0;
for(int i = 0; i < paper; i++) {
StringTokenizer st = new StringTokenizer(br.readLine(), " ");
int width = Integer.parseInt(st.nextToken());
int height = Integer.parseInt(st.nextToken());
mkResultArr(width, height);
}
for(int i = 0; i < 100; i++) {
for(int j = 0; j < 100; j++) {
count += resultArr[i][j];
}
}
System.out.println(count);
}
public static void mkResultArr(int width, int height) {
for(int i = 0; i < 10; i++) {
for(int j = 0; j < 10; j++) {
resultArr[height + i][width + j] = 1;
}
}
}
}