0_0_19944302_15152.cpp: In function 'int bfs()':
0_0_19944302_15152.cpp:48:24: error: 'memset' was not declared in this scope
memset(dp,0,sizeof(dp));
^
0_0_19944302_15152.cpp: In function 'int main()':
0_0_19944302_15152.cpp:193:30: error: 'memset' was not declared in this scope
memset(head,-1,sizeof(head));
^
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