/*
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      MIPTCLASSICMIPTCLASSICMIPTCLASSICMIPTCLASSICMIPTCLASSICMIPTCLASSIC
*/

 #define pragma

#ifdef pragma
#pragma GCC optimize("Ofast")
#pragma GCC optimize("no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")
#pragma GCC diagnostic ignored "-Wunused-result"
#endif // pragma

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#define ll long long
#define all(x) begin(x), end(x)
#define pb push_back
#define x first
#define y second
//#define int long long
#define zero(two) memset(two, 0, sizeof(two))

using namespace std;
using namespace __gnu_pbds;


typedef vector<int> vi;
typedef vector<bool> vb;
typedef pair<int, int> pii;
typedef long double ld;
typedef vector<vi> matrix;
template<typename T>
using kawaii_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

const ld PI = atan2(0, -1);

void seriy() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
//    cout << fixed << setprecision(9);
    #if _offline
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
}


template <class T = int> inline T readInt();
inline double readDouble();
inline int readUInt();
inline int readChar(); // first non-blank character
inline void readWord( char *s );
inline bool readLine( char *s ); // do not save '\n'
inline bool isEof();
inline int getChar();
inline int peekChar();
inline bool seekEof();
inline void skipBlanks();

template <class T> inline void writeInt( T x, char end = 0, int len = -1 );
inline void writeChar( int x );
inline void writeWord( const char *s );
inline void writeDouble( double x, int len = 0 );
inline void flush();

static struct buffer_flusher_t {
    ~buffer_flusher_t() {
        flush();
    }
} buffer_flusher;

/** Read */

static const int buf_size = 4096;

static unsigned char buf[buf_size];
static int buf_len = 0, buf_pos = 0;

inline bool isEof() {
    if (buf_pos == buf_len) {
        buf_pos = 0, buf_len = fread(buf, 1, buf_size, stdin);
        if (buf_pos == buf_len)
            return 1;
    }
    return 0;
}


inline int getChar() {
    return isEof() ? -1 : buf[buf_pos++];
}

inline int peekChar() {
    return isEof() ? -1 : buf[buf_pos];
}

inline bool seekEof() {
    int c;
    while ((c = peekChar()) != -1 && c <= 32)
        buf_pos++;
    return c == -1;
}

inline void skipBlanks() {
    while (!isEof() && buf[buf_pos] <= 32U)
        buf_pos++;
}

inline int readChar() {
    int c = getChar();
    while (c != -1 && c <= 32)
        c = getChar();
    return c;
}

inline int readUInt() {
    int c = readChar(), x = 0;
    while ('0' <= c && c <= '9')
        x = x * 10 + c - '0', c = getChar();
    return x;
}

template <class T>
inline T readInt() {
    int s = 1, c = readChar();
    T x = 0;
    if (c == '-')
        s = -1, c = getChar();
    else if (c == '+')
        c = getChar();
    while ('0' <= c && c <= '9')
        x = x * 10 + c - '0', c = getChar();
    return s == 1 ? x : -x;
}

inline double readDouble() {
    int s = 1, c = readChar();
    double x = 0;
    if (c == '-')
        s = -1, c = getChar();
    while ('0' <= c && c <= '9')
        x = x * 10 + c - '0', c = getChar();
    if (c == '.') {
        c = getChar();
        double coef = 1;
        while ('0' <= c && c <= '9')
            x += (c - '0') * (coef *= 1e-1), c = getChar();
    }
    return s == 1 ? x : -x;
}

inline void readWord( char *s ) {
    int c = readChar();
    while (c > 32)
        *s++ = c, c = getChar();
    *s = 0;
}

inline bool readLine( char *s ) {
    int c = getChar();
    while (c != '\n' && c != -1)
        *s++ = c, c = getChar();
    *s = 0;
    return c != -1;
}

/** Write */

static int write_buf_pos = 0;
static char write_buf[buf_size];

inline void writeChar( int x ) {
    if (write_buf_pos == buf_size)
        fwrite(write_buf, 1, buf_size, stdout), write_buf_pos = 0;
    write_buf[write_buf_pos++] = x;
}

inline void flush() {
    if (write_buf_pos)
        fwrite(write_buf, 1, write_buf_pos, stdout), write_buf_pos = 0;
}

template <class T>
inline void writeInt( T x, char end, int output_len ) {
    if (x < 0)
        writeChar('-'), x = -x;

    char s[24];
    int n = 0;
    while (x || !n)
        s[n++] = '0' + x % 10, x /= 10;
    while (n < output_len)
        s[n++] = '0';
    while (n--)
        writeChar(s[n]);
    if (end)
        writeChar(end);
}

inline void writeWord( const char *s ) {
    while (*s)
        writeChar(*s++);
}

inline void writeDouble( double x, int output_len ) {
    if (x < 0)
        writeChar('-'), x = -x;
    int t = (int)x;
    writeInt(t), x -= t;
    writeChar('.');
    for (int i = output_len - 1; i > 0; i--) {
        x *= 10;
        t = std::min(9, (int)x);
        writeChar('0' + t), x -= t;
    }
    x *= 10;
    t = std::min(9, (int)(x + 0.5));
    writeChar('0' + t);
}


const int MAXN = 1e3 + 10;
const int INF = 1e9 + 7;
const int MAXLOG = 31;
const int MOD = 1e9 + 7;
const ld EPS = 1e-4;

int cnt2[MAXN][MAXN], cnt5[MAXN][MAXN];
pii pr2[MAXN][MAXN], pr5[MAXN][MAXN];
int dp2[MAXN][MAXN], dp5[MAXN][MAXN];
int c2 = 0, c5 = 0;
string res1;
string res2;

signed main() {
    seriy();
    int n;
    n = readInt();
    int a;
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            a = readInt();
            while((a & 1) == 0) {
                a >>= 1;
                cnt2[i][j]++;
            }
            while(a % 5 == 0) {
                a /= 5;
                cnt5[i][j]++;
            }
        }
    }

    pr2[0][0] = {-1, -1};
    pr5[0][0] = {-1, -1};

    dp2[0][0] = 0;
    dp5[0][0] = 0;
//    zero(dp5);
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            if(i != 0 || j != 0) {
                dp2[i][j] = INF;
                dp5[i][j] = INF;
            }
            if(i > 0) {
                dp2[i][j] = dp2[i - 1][j];
                dp5[i][j] = dp5[i - 1][j];
                pr2[i][j] = {i - 1, j};
                pr5[i][j] = {i - 1, j};
            }
            if(j > 0) {
                if(dp2[i][j] > dp2[i][j - 1]) {
                    dp2[i][j] = dp2[i][j - 1];
                    pr2[i][j] = {i, j - 1};
                }
                if(dp5[i][j] > dp5[i][j - 1]) {
                    dp5[i][j] = dp5[i][j - 1];
                    pr5[i][j] = {i, j - 1};
                }
            }
            dp2[i][j] += cnt2[i][j];
            dp5[i][j] += cnt5[i][j];
        }
    }
    pii st = {n - 1, n - 1};
//    cerr << pr2[0][2].x << " " << pr2[0][2].y << '\n';
    while(st != pii{-1, -1}) {
//        cerr << st.x << " " << st.y << '\n';
        c2 += cnt2[st.x][st.y];
        c5 += cnt5[st.x][st.y];
        if(st.x - pr2[st.x][st.y].x == 1) res1 += 'D';
        else res1 += 'R';
        st = pr2[st.x][st.y];
    }
    int ans1 = min(c2, c5);
    st = {n - 1, n - 1};
    c2 = 0, c5 = 0;
    res1.pop_back();
    while(st != pii{-1, -1}) {
        c2 += cnt2[st.x][st.y];
        c5 += cnt5[st.x][st.y];
        if(st.x - pr5[st.x][st.y].x == 1) res2 += 'D';
        else res2 += 'R';
        st = pr5[st.x][st.y];
        if(min(c2, c5) >= ans1) {
            writeInt(ans1);
            writeChar('\n');
            for(int i = res1.size() - 1; i >= 0; i--) {
                writeChar(res1[i]);
            }
            return 0;
        }
    }

    res2.pop_back();
    writeInt(min(min(c2, c5), ans1));
    writeChar('\n');
    if(min(c2, c5) < ans1) {
        for(int i = res2.size() - 1; i >= 0; i--) {
            writeChar(res2[i]);
        }
    }
    else {
        for(int i = res1.size() - 1; i >= 0; i--) {
            writeChar(res1[i]);
        }
    }
    return 0;
}