0_0_20021094_19718.cpp: In function 'int main()':
0_0_20021094_19718.cpp:52:24: error: 'strlen' was not declared in this scope
len1=strlen(s+1);
^
0_0_20021094_19718.cpp:62:47: error: 'strcmp' was not declared in this scope
if(t<ans||t==ans&&strcmp(p+1,str+1)<0)
^
0_0_20021094_19718.cpp:65:33: error: 'strcpy' was not declared in this scope
strcpy(str+1,p+1);
^
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