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BOJ_11170.java
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BOJ_11170.java
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import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
public class Main {
private void solution() throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int tc = Integer.parseInt(br.readLine());
StringBuilder sb = new StringBuilder();
while (tc-->0) {
StringTokenizer st = new StringTokenizer(br.readLine());
int n = Integer.parseInt(st.nextToken());
int m = Integer.parseInt(st.nextToken());
int cnt = n==0?1:0;
for (int i = n; i <= m; i++) {
int tmp = i;
while (tmp!=0) {
if (tmp%10==0) cnt++;
tmp/=10;
}
}
sb.append(cnt).append('\n');
}
System.out.print(sb);
}
public static void main(String[] args) throws Exception {
new Main().solution();
}
}