1 #include <iostream>
2 #include <string>
3 #define MAXN 26
4
5 using namespace std;
6
7 int _map[MAXN];
8
9 string fun(int sum);
10
11 int main()
12 {
13 //freopen("acm.acm","r",stdin);
14 int test;
15 int i;
16 string s_1;
17 string s_2;
18 int sum_1;
19 int sum_2;
20 int sum;
21 _map['m'-'a'] = 1000;
22 _map['c'-'a'] = 100;
23 _map['x'-'a'] = 10;
24 _map['i'-'a'] = 1;
25 cin>>test;
26 while(test --)
27 {
28 cin>>s_1>>s_2;
29 sum_1 = 0;
30 sum_2 = 0;
31 for(i = 0; i < s_1.length(); ++ i)
32 {
33
34 if(s_1[i] >= '2' && s_1[i] <= '9')
35 {
36 ++ i;
37 sum_1 += (s_1[i-1]-'0')*_map[s_1[i]-'a'];
38 }
39 else
40 {
41 sum_1 += _map[s_1[i]-'a'];
42 }
43 }
44 for(i = 0; i < s_2.length(); ++ i)
45 {
46 if(s_2[i] >= '2' && s_2[i] <= '9')
47 {
48 ++ i;
49 sum_2 += (s_2[i-1]-'0')*_map[s_2[i]-'a'];
50 }
51 else
52 {
53 sum_2 += _map[s_2[i]-'a'];
54 }
55 }
56 //cout<<sum_1<<" "<<sum_2<<endl;
57 sum = sum_1 + sum_2;
58 cout<<fun(sum)<<endl;
59 }
60 }
61
62 string fun(int sum)
63 {
64 string s;
65 int num_m;
66 int num_c;
67 int num_x;
68 int num_i;
69 num_m = sum/1000;
70 sum %= 1000;
71 num_c = sum/100;
72 sum %= 100;
73 num_x = sum/10;
74 sum %= 10;
75 num_i = sum;
76 if(num_m != 0)
77 {
78 if(num_m == 1)
79 {
80 s += 'm';
81 }
82 else
83 {
84 s += char(num_m + '0');
85 s += 'm';
86 }
87 }
88 if(num_c != 0)
89 {
90 if(num_c == 1)
91 {
92 s += 'c';
93 }
94 else
95 {
96 s += char(num_c + '0');
97 s += 'c';
98 }
99 }
100
101 if(num_x != 0)
102 {
103 if(num_x == 1)
104 {
105 s += 'x';
106 }
107 else
108 {
109 s += char(num_x + '0');
110 s += 'x';
111 }
112 }
113
114 if(num_i != 0)
115 {
116 if(num_i == 1)
117 {
118 s += 'i';
119 }
120 else
121 {
122 s += char('0' + num_i);
123 s += 'i';
124 }
125 }
126 return s;
127 }
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