Submission #1178117


Source Code Expand

import math,string,itertools,fractions,heapq,collections,re,array,bisect,sys,random,time

sys.setrecursionlimit(10**7)
inf = 10**20
mod = 10**9 + 7

def LI(): return [int(x) for x in sys.stdin.readline().split()]
def LF(): return [float(x) for x in sys.stdin.readline().split()]
def LS(): return sys.stdin.readline().split()
def I(): return int(sys.stdin.readline())
def F(): return float(sys.stdin.readline())
def S(): return sys.stdin.readline()


def main():
    h,w = LI()
    a = [LI() for _ in range(h)]
    r = 0
    dy = (0,0,1,-1)
    dx = (1,-1,0,0)

    m = [[None]*w for _ in range(h)]
    def f(y,x):
        if m[y][x]:
            return m[y][x]

        r = 1
        k = a[y][x]
        for i in range(4):
            ty,tx = y+dy[i], x+dx[i]
            if 0 <= ty < h and 0 <= tx < w:
                if a[ty][tx] >= k:
                    continue
                r += f(ty,tx)
        m[y][x] = r % mod
        return m[y][x]

    return sum(sum(f(i,j) for j in range(w)) % mod for i in range(h)) % mod


print(main())

Submission Info

Submission Time
Task D - 経路
User iehn
Language PyPy3 (2.4.0)
Score 100
Code Size 1081 Byte
Status AC
Exec Time 1361 ms
Memory 127448 KB

Judge Result

Set Name sample All
Score / Max Score 0 / 0 100 / 100
Status
AC × 2
AC × 24
Set Name Test Cases
sample sample01.txt, sample02.txt
All 00.txt, 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, sample01.txt, sample02.txt, sample01.txt, sample02.txt
Case Name Status Exec Time Memory
00.txt AC 880 ms 109784 KB
01.txt AC 1140 ms 127448 KB
02.txt AC 837 ms 109784 KB
03.txt AC 271 ms 64236 KB
04.txt AC 278 ms 64236 KB
05.txt AC 274 ms 64364 KB
06.txt AC 296 ms 65644 KB
07.txt AC 306 ms 67564 KB
08.txt AC 308 ms 67816 KB
09.txt AC 272 ms 64236 KB
10.txt AC 338 ms 70616 KB
11.txt AC 1296 ms 120408 KB
12.txt AC 1361 ms 120804 KB
13.txt AC 1341 ms 120280 KB
14.txt AC 1307 ms 120280 KB
15.txt AC 1055 ms 117592 KB
16.txt AC 1291 ms 120536 KB
17.txt AC 1316 ms 120536 KB
18.txt AC 866 ms 111392 KB
19.txt AC 708 ms 104792 KB
sample01.txt AC 273 ms 64236 KB
sample02.txt AC 275 ms 64236 KB