#include "bits/stdc++.h"

using namespace std;
typedef unsigned int uint;
typedef long long int ll;
typedef unsigned long long int ull;

#define debugv(v) printf("L%d %s => ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;
#define debugm(m) printf("L%d %s is..\n",__LINE__,#m);for(auto v:m){for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) printf("L%d %s is => ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;
#define debugaa(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[x][y]<<" ";}cout<<endl;}
#define debugaar(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;}
#define ALL(v) (v).begin(),(v).end()
#define BIGINT 0x7FFFFFFF
#define E107 1000000007ll
void printbit(int u){if(u==0)cout<<0;else{int s=0,k=0;for(;0<u;u>>=1,k++)s=(s<<1)|(u&1);for(;0<k--;s>>=1)cout<<(s&1);}}

#define TIME chrono::system_clock::now()
#define MILLISEC(t) (chrono::duration_cast<chrono::milliseconds>(t).count())

namespace {
    std::chrono::system_clock::time_point t;
    void tic() { t = TIME; }
    void toc() { fprintf(stderr, "TIME : %lldms\n", MILLISEC(TIME - t)); }
    std::chrono::system_clock::time_point tle = TIME;
    #ifdef __MAI
    void safe_tle(int msec) { assert(MILLISEC(TIME - tle) < msec); }
    #else
    #define safe_tle(k) ;
    #endif
}

// TODO: codeIQSandboxでは動くけれどCygwinでは動かず

namespace{
    class MaiScanner{
    public:
        template<typename T>
        void input_integer(T& var){
            var = 0;
            T sign = 1;
            int cc = getchar_unlocked();
            for (;cc<'0'||'9'<cc; cc=getchar_unlocked())
                if (cc=='-') sign=-1;
            for (;'0'<=cc&&cc<='9'; cc=getchar_unlocked())
                var = (var<<3)+(var<<1) + cc-'0';
            var=var*sign;
        }
        void ign(){getchar_unlocked();}
        MaiScanner& operator>>(int& var){
            input_integer<int>(var);
            return *this;
        }
        MaiScanner& operator>>(long long& var){
            input_integer<long long>(var);
            return *this;
        }
    };
    class MaiPrinter{
        int stack_p;
        char stack[32];
    public:
        template<typename T>
        void output_integer(T var){
            if (var == 0){
                putchar_unlocked('0');
                return;
            }
            if (var < 0){
                putchar_unlocked('-');
                var = -var;
            }
            stack_p=0;
            while (var){
                stack[stack_p++]='0'+(var%10);
                var /= 10;
            }
            while(stack_p)
                putchar_unlocked(stack[--stack_p]);
        }
        MaiPrinter& operator<<(char c){
            putchar_unlocked(c);
            return *this;
        }
        MaiPrinter& operator<<(int var){
            output_integer<int>(var);
            return *this;
        }
        MaiPrinter& operator<<(long long var){
            output_integer<long long>(var);
            return *this;
        }
    };
}
MaiScanner scanner;
MaiPrinter printer;


template<typename T1,typename T2>
ostream& operator <<(ostream &o,const pair<T1,T2> p){o<<"("<<p.first<<":"<<p.second<<")";return o;}

int width,height;
int m,n;

int main(){
    int i,j,k;
    ll x,y,a,b;
    
    scanner >> n;
    
    a = 0;
    for (i=0;i<n;++i){
        scanner >> b;
        a+=b;
    }
    cout << a << endl;
    
    safe_tle(10);

    return 0;
}