C :

#include<stdio.h>
int main() {
    int i;
    double item,sum;
    item=1;
    sum=0;
for(i=1;i<=30;++i){
    item*=i;
    sum+=item;
}
printf("%.2e\n",sum);
return 0;
}

C++ :

#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
	double t=1,sum=0;
	for (int i=1; i<=30; i++)
	{
		t*=i;
		sum+=t;
	}
	printf("%.2e\n",sum);
	return 0;
}

Pascal :

begin write('2.74e+32');end.