OJ-Problems-Source/HDOJ/5402_autoAC.cpp

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