Submission #1178121


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 = tuple([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 1086 Byte
Status AC
Exec Time 1360 ms
Memory 127192 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 843 ms 106456 KB
01.txt AC 1150 ms 127192 KB
02.txt AC 826 ms 109912 KB
03.txt AC 274 ms 64236 KB
04.txt AC 272 ms 64236 KB
05.txt AC 272 ms 64236 KB
06.txt AC 292 ms 65772 KB
07.txt AC 307 ms 67564 KB
08.txt AC 312 ms 67816 KB
09.txt AC 274 ms 64236 KB
10.txt AC 332 ms 70616 KB
11.txt AC 1303 ms 120536 KB
12.txt AC 1360 ms 120536 KB
13.txt AC 1346 ms 120664 KB
14.txt AC 1301 ms 120536 KB
15.txt AC 1049 ms 117080 KB
16.txt AC 1273 ms 120408 KB
17.txt AC 1312 ms 120408 KB
18.txt AC 840 ms 111320 KB
19.txt AC 720 ms 104792 KB
sample01.txt AC 273 ms 64236 KB
sample02.txt AC 274 ms 64236 KB