Submission #3382440

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Source Code Expand

#include<bits/stdc++.h>
using namespace std; 
const int N = 200;
const int inf = 0x3f3f3f; 
char a[ N ]={0};int b[N]={0};
int main()
{
//	freopen("1.txt","r",stdin);
	int n; scanf("%d",&n);
	for ( int i = 0 ; i <= n; i++)
		scanf("%c",&a[i]);
	
	for ( int i = 1; i <= n; i++) 	b[i] = inf; 
	
	if ( a[1] == 'X')  b[1] = 1; 
	else b[1] = 0 ; 
	
	for ( int i = 1; i <= n; i++)
	{
		if ( a[ i+1 ] == 'X'){
			b[i+1] = min(b[i+1] , b[i]+1);	
		}
		else {
			b[i+1] = min(b[i+1] , b[i]);	
		}
		
		if ( a[ i+2 ] == 'X'){
			b[i+2] = min(b[i+2] , b[i]+1);	
		}
		else {
			b[i+2] = min(b[i+2] , b[i]);	
		}
		
		if ( a[ i+3 ] == 'X'){
			b[i+3] = min(b[i+3] , b[i]+1);	
		}
		else {
			b[i+3] = min(b[i+3] , b[i]);	
		}
		
	}
	printf("%d",b[n]);
	
	return 0; 
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:9:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  int n; scanf("%d",&n);
                       ^
./Main.cpp:11:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%c",&a[i]);
                    ^

Judge Result