View Compilation Error

0_0_29469718_26642.cpp:2:1: error: '_int64' does not name a type
 _int64 dp[105][105][200];
 ^
0_0_29469718_26642.cpp:3:1: error: '_int64' does not name a type
 _int64 max(_int64 a,_int64 b)
 ^
0_0_29469718_26642.cpp: In function 'int main()':
0_0_29469718_26642.cpp:10:5: error: '_int64' was not declared in this scope
     _int64 const min=1e18;
     ^
0_0_29469718_26642.cpp:23:21: error: 'dp' was not declared in this scope
                     dp[i][j][k]=-min;
                     ^
0_0_29469718_26642.cpp:23:34: error: 'min' was not declared in this scope
                     dp[i][j][k]=-min;
                                  ^
0_0_29469718_26642.cpp:35:9: error: 'dp' was not declared in this scope
         dp[1][1][0]=ai[1][1];
         ^
0_0_29469718_26642.cpp:58:72: error: 'max' was not declared in this scope
                         dp[i][j][k]=max(dp[i][j][k],dp[i][j][k-1]+value);
                                                                        ^