#include <stdio.h>
#define xstr(s) str(s)
#define str(s) #s
#define MAXN 20
#define PREFSUM MAXN + 1
#define FIRST 0
#define F for (int i = 1; i < n + 1; ++i)
#define GETINT(b) scanf("%d",&b)
#define INVITE1 "Enter number of elements\n"
#define INVITE2 "Enter elements\n"

#define PRINT(a) printf(a)
#define PRINTINT(a) printf("%d ",a)
int main(void) {
    int ar[MAXN];
    int s[PREFSUM]; s[FIRST] = 0;
    int n;
    PRINT(INVITE1);
    GETINT(n);
    PRINT(INVITE2);
    F
    {
        GETINT(ar[i - 1]);
        s[i] = ar[i - 1] + s[i - 1];
    }
    F PRINTINT(s[i]);

}