C :

#include <stdio.h>
int a, b, i;
int main(void) {
    for (i = 1; i <= 10; i++) {
        scanf("%d", &a);
        b += a;
    }
    printf("%d\n", b);
    return 0;
}

C++ :

#include<iostream>

using namespace std;

int main()
{
	int a,b;
	b=0;
    for (int i=1;i<=10;i++)
    {
    	cin>>a;
    	b=b+a;
    }
	cout<<b<<endl;
	return 0;
}

Python :

# coding=utf-8
t = 0
for i in range(0, 10) :
    s = int(input())
    t = t + s
print(t)