0_0_25791702_25427.cpp: In function 'int main()': 0_0_25791702_25427.cpp:38:25: error: 'memset' was not declared in this scope memset(f,0,sizeof(f)); ^ 0_0_25791702_25427.cpp:40:5: error: 'cnt' was not declared in this scope cnt=0; ^