Submission #1178112


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 list(map(float, input().split()))
def LS(): return input().split()
def I(): return int(input())
def F(): return float(input())
def S(): return input()


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 1014 Byte
Status AC
Exec Time 1501 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 921 ms 106584 KB
01.txt AC 1234 ms 127192 KB
02.txt AC 912 ms 109656 KB
03.txt AC 297 ms 64236 KB
04.txt AC 297 ms 64236 KB
05.txt AC 289 ms 64236 KB
06.txt AC 326 ms 65644 KB
07.txt AC 331 ms 67564 KB
08.txt AC 337 ms 67816 KB
09.txt AC 293 ms 64236 KB
10.txt AC 362 ms 70616 KB
11.txt AC 1411 ms 120408 KB
12.txt AC 1501 ms 120536 KB
13.txt AC 1444 ms 120536 KB
14.txt AC 1400 ms 121048 KB
15.txt AC 1184 ms 117080 KB
16.txt AC 1427 ms 120536 KB
17.txt AC 1444 ms 120408 KB
18.txt AC 953 ms 111192 KB
19.txt AC 812 ms 104792 KB
sample01.txt AC 306 ms 64236 KB
sample02.txt AC 295 ms 64236 KB