0_0_13676591_24162.cpp:20:7: error: 'N' was not declared in this scope
int a[N][N],dp[N][N][3];//dp[][][0]：左->右 dp[][][1]:上->下 dp[][][2] 下->上
^
0_0_13676591_24162.cpp:20:10: error: 'N' was not declared in this scope
int a[N][N],dp[N][N][3];//dp[][][0]：左->右 dp[][][1]:上->下 dp[][][2] 下->上
^
0_0_13676591_24162.cpp:20:16: error: 'N' was not declared in this scope
int a[N][N],dp[N][N][3];//dp[][][0]：左->右 dp[][][1]:上->下 dp[][][2] 下->上
^
0_0_13676591_24162.cpp:20:19: error: 'N' was not declared in this scope
int a[N][N],dp[N][N][3];//dp[][][0]：左->右 dp[][][1]:上->下 dp[][][2] 下->上
^
0_0_13676591_24162.cpp: In function 'int main()':
0_0_13676591_24162.cpp:35:29: error: 'a' was not declared in this scope
scanf("%d",&a[i][j]);
^
0_0_13676591_24162.cpp:36:17: error: 'dp' was not declared in this scope
dp[i][j][0] = dp[i][j][1] = dp[i][j][2] = -INF;
^
0_0_13676591_24162.cpp:38:9: error: 'dp' was not declared in this scope
dp[0][0][0] = dp[0][0][1] = dp[0][0][2] = a[0][0];
^
0_0_13676591_24162.cpp:38:51: error: 'a' was not declared in this scope
dp[0][0][0] = dp[0][0][1] = dp[0][0][2] = a[0][0];
^
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