View Compilation Error

0_0_15912064_17754.cpp: In function 'void init()':
0_0_15912064_17754.cpp:34:29: error: 'memset' was not declared in this scope
     memset(pay,-1,sizeof pay);
                             ^
0_0_15912064_17754.cpp: In function 'int check(node1, node1)':
0_0_15912064_17754.cpp:46:29: error: 'memset' was not declared in this scope
     memset(vis,0,sizeof(vis));
                             ^