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#include<stdio.h>
#include<math.h>
 
int main()
{
	int n,xe=1,seat=4,i=0;
	scanf("%d\n",&n);
	char a[n];
	gets(a);
	while(i<n){
		if(seat-a[i]==0){
			xe++;
			seat=4;
			i++;continue;
		}
		if(seat-a[i]>0){
			seat=seat-a[i];
			i++;continue;
		}
		if(seat-a[i]<0){
			xe++;
			seat=4;
			continue;
		}
	}
	printf("%d",xe);
 
 
}#include <iostream>
using namespace std;
 
int main() {
	// your code goes here
	return 0;
}

prog.cpp:29:2: error: stray ‘#’ in program
 }#include <iostream>
  ^
prog.cpp: In function ‘int main()’:
prog.cpp:9:8: error: ‘gets’ was not declared in this scope
  gets(a);
        ^
prog.cpp: At global scope:
prog.cpp:29:3: error: ‘include’ does not name a type
 }#include <iostream>
   ^~~~~~~
prog.cpp: In function ‘int main()’:
prog.cpp:32:5: error: redefinition of ‘int main()’
 int main() {
     ^~~~
prog.cpp:4:5: note: ‘int main()’ previously defined here
 int main()
     ^~~~

Standard output is empty