View Compilation Error

0_0_25705211_3350.cpp: In function 'int main()':
0_0_25705211_3350.cpp:32:11: error: 'int64' was not declared in this scope
         --int64 sum;
           ^
0_0_25705211_3350.cpp:46:21: error: 'sum' was not declared in this scope
                     sum+=b[i].x*500+b[i].y*2;
                     ^
0_0_25705211_3350.cpp:52:33: error: 'sum' was not declared in this scope
         printf("%d %I64d\n",cnt,sum);
                                 ^