Submission #3698517

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Source Code Expand

#include<cstdio>
#define reg register
#define cmax(_a,_b) _a>_b?_a:_a=_b
char a[2005];
bool s[2005];
int R()
{
	reg int x=0;reg bool f=0;reg char ch=getchar();
	for(;ch<48||ch>57;ch=getchar())if(ch=='-')f=1;
	for(;ch>=48&&ch<=57;ch=getchar())x=(x<<1)+(x<<3)+(ch^48);
	return f?-x:x;
}
int main()
{
	reg int n,m,i,j,ans=0;
	reg char f=1;
	scanf("%s",a);
	for(i=0;a[i];++i) s[i]=a[i]=='I';
	for(i=0;a[i];++i)
		if(s[i]==f) ++ans,f^=1;
	if(f==1) --ans;
	return !printf("%d",ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:17:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",a);
               ^

Judge Result