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ArrangeSoldier.java
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ArrangeSoldier.java
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import java.io.BufferedReader;
import java.io.InputStreamReader;
public class ArrangeSoldier {
private static int[] resultArr;
private static int[] dpArr;
public static void main(String[] args) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int length = Integer.parseInt(br.readLine());
String[] infoArr = br.readLine().split(" ");
initArr(length);
mkResultArr(infoArr);
mkDpArr();
printResult();
}
public static void initArr(int length) {
resultArr = new int[length];
dpArr = new int[length];
}
public static void mkResultArr(String[] infoArr) {
for(int i = 0; i < infoArr.length; i++) {
resultArr[i] = Integer.parseInt(infoArr[i]);
}
}
public static void mkDpArr() {
int length = 0;
for(int i = 0; i < dpArr.length; i++) {
int index = binarySearch(resultArr[i], 0, length, length + 1);
if(index == -1) {
length++;
dpArr[length] = resultArr[i];
continue;
}
dpArr[index] = resultArr[i];
}
}
public static int binarySearch(int value, int start, int end, int size) {
int index = 0;
while(start <= end) {
int mid = (start + end) / 2;
if(value >= dpArr[mid]) {
index = mid;
end = mid - 1;
continue;
}
start = mid + 1;
}
if(start == size) return -1;
return index;
}
public static void printResult() {
int resultCount = 0;
for(int value : dpArr) {
if(value == 0) resultCount++;
}
System.out.println(resultCount);
}
}