# Poj Solution 2685

```http://poj.org/problem?id=2685

import java.io.BufferedInputStream;
import java.util.Scanner;

/**
*
* poj2685
* @author NC
*/
public class Main {

public static void main(String[] args) {
Scanner scan = new Scanner(new BufferedInputStream(System.in));
if (scan.hasNext()) {
int n = scan.nextInt();
scan.nextLine();
for (int i = 0; i < n; i++) {
String[] ss = scan.nextLine().trim().split(" ");
char[] a = ss.toCharArray();
char[] b = ss.toCharArray();
int[] va = {0, 0, 0, 0};
int[] vb = {0, 0, 0, 0};
int[] vc = new int;
for (int j = 0; j < a.length; j++) {
if (a[j] - '0' <= 9 && a[j] - '0' >= 2) {
j++;
va[getIndex(a[j])] = a[j - 1] - '0';
} else {
va[getIndex(a[j])] = 1;
}
}
for (int j = 0; j < b.length; j++) {
if (b[j] - '0' <= 9 && b[j] - '0' >= 2) {
j++;
vb[getIndex(b[j])] = b[j - 1] - '0';
} else {
vb[getIndex(b[j])] = 1;
}
}
for (int j = vc.length - 1; j >= 0; j--) {
vc[j] = vc[j] + va[j] + vb[j];
if (vc[j] >= 10) {
vc[j] = vc[j] - 10;
if (j - 1 >= 0) {
vc[j - 1] = vc[j - 1] + 1;
}
}
}
print(vc);
}
}
}

static void print(int[] c) {
for (int i = 0; i < c.length; i++) {
if (c[i] == 0) {
continue;
}
if (c[i] == 1) {
System.out.print(""+getChar(i));
} else {
System.out.print(c[i]+(getChar(i)+""));
}
}
System.out.println();
}

static int getIndex(char c) {
switch (c) {
case 'm':
return 0;
case 'c':
return 1;
case 'x':
return 2;
case 'i':
return 3;
default:
return -1;
}
}

static char getChar(int i) {
switch (i) {
case 0:
return 'm';
case 1:
return 'c';
case 2:
return 'x';
case 3:
return 'i';
default:
return '0';
}
}
}

```
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