I am getting RuntimeError while executing this code but I am getting all
test cases passed in my local ide. Can anyone help me know what is wrong in
this code?
import java.util.*;
import java.io.*;
public class Solution {
public static void main(String[] args) throws IOException{
Scanner sc = new Scanner(new BufferedReader(new
InputStreamReader(System.in)));
int T = sc.nextInt();
for(int i = 0;i < T;i++) {
int N = sc.nextInt();
Map<Integer, List<Integer>> map = new TreeMap<Integer, List<Integer>>();
for(int j = 0;j< N;j++) {
map.put(sc.nextInt(), Arrays.asList(sc.nextInt(),(j+1))); //stores
(starting,[ending,Activity number])
}
//System.out.println(map);
String s = "";
int C = 0;
int J = 0;
boolean cam = false;
boolean jam = true;
for(int start : map.keySet()) {
if(cam) {
if(start >= C) {
cam = false;
}
}
if(jam) {
if(start >= J) {
jam = false;
}
}
if(!cam) {
s = s + "C";
C = (map.get(start)).get(0);
cam = true;
}
else if(!jam) {
s = s + "J";
J = (map.get(start)).get(0);
jam = true;
}
else if(cam && jam) {
s = "IMPOSSIBLE";
continue;
}
}
String result = new String();
if(s == "IMPOSSIBLE") {
System.out.println("Case #"+(i+1)+": "+s);
}
else {
for(Map.Entry<Integer, List<Integer>> entry : map.entrySet()) {
result = result +
Character.toString((s.charAt((entry.getValue()).get(1)-1)));
}
System.out.println("Case #"+(i+1)+": "+result);
}
}
sc.close();
}
}
Output in my local ide :
4
3
360 480
420 540
600 660
Case #1: CJC
3
0 1440
1 3
2 4
Case #2: IMPOSSIBLE
5
99 150
1 100
100 301
2 5
150 250
Case #3: JCCJJ
2
0 720
720
1440
Case #4: CC
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