View Compilation Error

0_0_17800564_17223.cpp: In function 'int main()':
0_0_17800564_17223.cpp:76:23: error: 'INF' was not declared in this scope
             int poi = INF,x = 100000,y = 100000,nei = INF;
                       ^
0_0_17800564_17223.cpp:82:21: error: 'x' was not declared in this scope
                     x = j;
                     ^
0_0_17800564_17223.cpp:92:21: error: 'y' was not declared in this scope
                     y = k;
                     ^
0_0_17800564_17223.cpp:93:21: error: 'nei' was not declared in this scope
                     nei = pp;
                     ^
0_0_17800564_17223.cpp:97:21: error: 'nei' was not declared in this scope
             if(poi<=nei)
                     ^
0_0_17800564_17223.cpp:99:30: error: 'x' was not declared in this scope
                 a[i].oid = a[x].id;
                              ^
0_0_17800564_17223.cpp:101:31: error: 'y' was not declared in this scope
             else a[i].oid = a[y].id;
                               ^