106 lines
3.0 KiB
C++
106 lines
3.0 KiB
C++
#pragma comment(linker, "/STACK:1024000000,1024000000")
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#include<set>
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#include<map>
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#include<queue>
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#include<stack>
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#include<cmath>
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#include<cstdio>
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#include<vector>
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#include<string>
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#include<cstring>
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#include<algorithm>
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#include<functional>
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using namespace std;
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typedef long long LL;
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const LL base = 1e9 + 7;
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const int maxn = 105;
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LL T, n, m, a[maxn][maxn], sum, x, y;
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inline void read(int &x)
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{
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char ch;
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while ((ch = getchar())<'0' || ch>'9');
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x = ch - '0';
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while ((ch = getchar()) >= '0' && ch <= '9') x = x * 10 + ch - '0';
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}
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void get()
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{
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x = 1; y = 2;
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for (int i = 1; i <= n;i++)
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for (int j = 1; j <= m; j++)
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if (((i + j) & 1) && a[x][y] > a[i][j]) x = i, y = j;
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}
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int main()
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{
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while (scanf("%lld%lld", &n, &m) !=EOF)
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{
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sum = 0;
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for (int i = 1; i <= n;i++)
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for (int j = 1; j <= m; j++)
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{
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scanf("%lld", &a[i][j]);
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sum += a[i][j];
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}
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if (n & 1 || m & 1)
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{
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printf("%lld\n", sum);
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if (n & 1)
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{
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for (int i = 1; i <= n; i++)
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{
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for (int j = 1; j < m; j++)
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if (i & 1) printf("R"); else printf("L");
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if (i < n) printf("D"); else printf("\n");
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}
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}
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else
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{
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for (int i = 1; i <= m; i++)
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{
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for (int j = 1; j < n; j++)
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if (i & 1) printf("D"); else printf("U");
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if (i < m) printf("R"); else printf("\n");
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}
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}
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}
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else
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{
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get();
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printf("%lld\n", sum - a[x][y]);
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for (int i = 1; i <= n; i += 2)
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{
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if (x == i || x == i + 1)
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{
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for (int j = 1; j < y; j++)
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{
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if (j & 1) printf("D"); else printf("U");
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printf("R");
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}
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if (y < m) printf("R");
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for (int j = y + 1; j <= m; j++)
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{
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if (j & 1) printf("U"); else printf("D");
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if (j < m) printf("R");
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}
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if (i < n - 1) printf("D");
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}
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else if (i < x)
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{
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for (int j = 1; j < m; j++) printf("R");
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printf("D");
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for (int j = 1; j < m; j++) printf("L");
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printf("D");
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}
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else
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{
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for (int j = 1; j < m; j++) printf("L");
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printf("D");
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for (int j = 1; j < m; j++) printf("R");
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if (i < n - 1) printf("D");
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}
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}
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printf("\n");
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}
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}
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return 0;
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}
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