View Compilation Error

0_0_18106623_12546.cpp:3:1: error: 'cnost' does not name a type
 cnost int INF = 0x3f3f3f3f;
 ^
0_0_18106623_12546.cpp: In function 'int main()':
0_0_18106623_12546.cpp:12:23: error: 'INF' was not declared in this scope
             d[i][i] = INF;
                       ^