#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
const ll linf = 0x3f3f3f3f3f3f3f3f;

const char s[] = "-MDCLXVI";
ll a[10];
ll res[4][10];

inline bool check(ll lim)
{
	memset(res, 0, sizeof(res));
	ll lst = 0;
	for(int i=0; i<4; ++i)
	{
		ll x = a[2*i+1], y = a[2*i];
		if(y + lst > lim) return 0;
		if(x < lst) return 0;
		
		ll rem = lim;
		res[i][9] = lst; x -= lst; rem -= lst;
		
		ll t = min(y, x / 3);
		res[i][8] = t; y -= t; x -= t * 3; rem -= t;
		t = min(y, x / 2);
		res[i][7] = t; y -= t; x -= t * 2; rem -= t;
		t = min(y, x);
		res[i][6] = t; y -= t; x -= t * 1; rem -= t;
		t = y;
		res[i][5] = t; y -= t; x -= t * 0; rem -= t;
		
		t = min(rem, x / 3);
		res[i][3] = t; x -= t * 3; rem -= t;
		t = min(rem, x / 2);
		res[i][2] = t; x -= t * 2; rem -= t;
		t = min(rem, x);
		res[i][1] = t; x -= t * 1; rem -= t;
		
		res[i][0] = linf;
		
		lst = x;
	}
	if(lst) return 0;
	return 1;
}

int main(void)
{
	for(int i=1; i<=7; ++i)
		scanf("%lld",&a[i]);
	
	ll l = 0, r = 1e18;
	while(l<r)
	{
		ll mid = l + (r-l)/2;
		if(check(mid)) r = mid;
		else l = mid+1;
	}
	check(l);
	
	printf("%lld\n",l);
	
	vector< pair<string,ll> > vec;
	for(int i=3999; i>=1; --i)
	{
		int use[4];
		for(int j=0, t=i; j<4; ++j)
			use[3-j] = t % 10, t /= 10;
		
		ll mn = res[0][use[0]];
		for(int j=1; j<4; ++j)
			mn = min(mn, res[j][use[j]]);
		
		if(!mn) continue;
		
		string cur;
		for(int j=0; j<4; ++j)
		{
			char x = s[2*j+1], y = s[2*j], z = j == 0? 0: s[2*j-1];
			if(use[j] == 1)
				cur = cur + x;
			else if(use[j] == 2)
				cur = cur + x + x;
			else if(use[j] == 3)
				cur = cur + x + x + x;
			else if(use[j] == 4)
				cur = cur + x + y;
			else if(use[j] == 5)
				cur = cur + y;
			else if(use[j] == 6)
				cur = cur + y + x;
			else if(use[j] == 7)
				cur = cur + y + x + x;
			else if(use[j] == 8)
				cur = cur + y + x + x + x;
			else if(use[j] == 9)
				cur = cur + x + z;
		}
		
		vec.emplace_back(cur, mn);
		for(int j=0; j<4; ++j)
			res[j][use[j]] -= mn;
	}
	
	printf("%d\n",(int)vec.size());
	for(auto t: vec)
		printf("%s %lld\n",t.first.c_str(),t.second);
	return 0;
}