global n,m,matrix,pathmatrix
def rec(x, y):
try:
return pathmatrix[x,y]
except:
if x > 0:
left = rec(x - 1, y)
else:
left = (-1,[])
if y > 0:
up = rec(x, y - 1)
else:
up = (-1,[])
maxdist = max(left[0], up[0]) + matrix[x][y]
if left[0] > up[0]:
path = pathmatrix[x - 1,y][1].copy()
path.append('D')
else:
path = pathmatrix[x,y - 1][1].copy()
path.append('R')
pathmatrix[x,y] = (maxdist,path)
return pathmatrix[x,y]
n,m = [int(i) for i in input().split()]
matrix = [[int(i) for i in input().split()] for j in range(n)]
pathmatrix = {(0,0) : (matrix[0][0], [])}
res = rec(n-1,m-1)
print(res[0])
print(' '.join(res[1]))
global n,m,matrix,pathmatrix
def rec(x, y):
try:
return pathmatrix[x,y]
except:
if x > 0:
left = rec(x - 1, y)
else:
left = (-1,[])
if y > 0:
up = rec(x, y - 1)
else:
up = (-1,[])
maxdist = max(left[0], up[0]) + matrix[x][y]
if left[0] > up[0]:
path = pathmatrix[x - 1,y][1].copy()
path.append('D')
else:
path = pathmatrix[x,y - 1][1].copy()
path.append('R')
pathmatrix[x,y] = (maxdist,path)
return pathmatrix[x,y]
n,m = [int(i) for i in input().split()]
matrix = [[int(i) for i in input().split()] for j in range(n)]
pathmatrix = {(0,0) : (matrix[0][0], [])}
res = rec(n-1,m-1)
print(res[0])
print(' '.join(res[1]))
Объяснение:
