def bfs(i,j,k): if i>=0 and i<R and j>=0 and j<C and A[i][j]<k and dis[i][j]>0: return dis[i][j] #!!(1) elif i>=0 and i<R and j>=0 and j<C and A[i][j]<k: l=bfs(i,j-1,A[i][j]) u=bfs(i-1,j,A[i][j]) r=bfs(i,j+1,A[i][j]) d=bfs(i+1,j,A[i][j]) dis[i][j]=1+max(l,u,r,d) #!!(2) return dis[i][j] else: return 0 R,C=map(int,input().split()) A=[[] for i in range(R)] for i in range(R): A[i]=[int(n) for n in input().split()] #输入矩阵 dis=[[0 for i in range(C)] for j in range(R)] #作为顶点的最长路径 Max=0 for i in range(R): for j in range(C): t=bfs(i,j,A[i][j]+1) dis[i][j]=t if Max<dis[i][j]: Max=dis[i][j] print(Max)
时间: 2023-12-01 12:04:25 浏览: 31
以下是将该 Python 代码转换为 C++ 代码的示例:
```cpp
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
const int MAXN = 105;
int R, C, A[MAXN][MAXN], dis[MAXN][MAXN];
int bfs(int i, int j, int k) {
if (i >=0 && i < R && j >= 0 && j < C && A[i][j] < k && dis[i][j] > 0)
return dis[i][j];
else if (i >= 0 && i < R && j >= 0 && j < C && A[i][j] < k) {
int l = bfs(i, j - 1, A[i][j]);
int u = bfs(i - 1, j, A[i][j]);
int r = bfs(i, j + 1, A[i][j]);
int d = bfs(i + 1, j, A[i][j]);
dis[i][j] = 1 + max({l, u, r, d});
return dis[i][j];
}
else {
return 0;
}
}
int main() {
cin >> R >> C;
for (int i = 0; i < R; i++) {
for (int j = 0; j < C; j++) {
cin >> A[i][j];
}
}
int Max = 0;
for (int i = 0; i < R; i++) {
for (int j = 0; j < C; j++) {
int t = bfs(i, j, A[i][j] + 1);
dis[i][j] = t;
Max = max(Max, t);
}
}
cout << Max << endl;
return 0;
}
```
请注意,由于C++和Python在语法上有一些差异,因此在转换代码时需要对代码进行一些修改。