Submission #1247916


Source Code Expand

#include <iostream>
#include <cstdio>
typedef long long ll;

using namespace std;

const int INF = 1000000007;
int H, W;
int dx[4] = {0,-1,0,1};
int dy[4] = {-1,0,1,0};
ll memo[1001][1001];
ll maze[1001][1001];
ll ans;

int rec (int i, int j) {
  int x;
  if(memo[i][j] > 0) return memo[i][j];
  int res = 0;
  res++;

  for(int n = 0; n < 4; n++) {
    int nx = j + dx[n];
    int ny = i + dy[n];
    if(nx >= 0 && nx < W && ny >= 0 && ny < H && maze[i][j] < maze[ny][nx]){
      res += rec(ny,nx);
      if(res >= INF) res -= INF;
    }
  }
  return memo[i][j] = res;
}

int main() {
  scanf("%d %d",&H,&W);

  for(int i = 0; i < H; i++) {
    for(int j = 0; j < W; j++) {
      scanf("%lld",&maze[i][j]);
    }
  }

  for(int i = 0; i < H; i++) {
    for(int j = 0; j < W; j++) {
      ans += rec(i,j);
      if(ans > INF) ans -= INF;
    }
  }

  printf("%lld\n",ans);
  return 0;
}

  
      

  

Submission Info

Submission Time
Task D - 経路
User shossie1016
Language C++14 (GCC 5.4.1)
Score 100
Code Size 957 Byte
Status AC
Exec Time 146 ms
Memory 16000 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:33:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&H,&W);
                       ^
./Main.cpp:37:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
       scanf("%lld",&maze[i][j]);
                                ^

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 106 ms 16000 KB
01.txt AC 117 ms 16000 KB
02.txt AC 91 ms 15872 KB
03.txt AC 2 ms 2304 KB
04.txt AC 2 ms 2304 KB
05.txt AC 2 ms 2304 KB
06.txt AC 2 ms 2304 KB
07.txt AC 2 ms 2304 KB
08.txt AC 2 ms 2432 KB
09.txt AC 2 ms 2304 KB
10.txt AC 2 ms 4608 KB
11.txt AC 146 ms 15872 KB
12.txt AC 146 ms 15872 KB
13.txt AC 146 ms 15872 KB
14.txt AC 146 ms 15872 KB
15.txt AC 134 ms 16000 KB
16.txt AC 145 ms 15872 KB
17.txt AC 145 ms 16000 KB
18.txt AC 101 ms 15872 KB
19.txt AC 87 ms 15872 KB
sample01.txt AC 2 ms 2304 KB
sample02.txt AC 2 ms 2304 KB