#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i=0; i<(int)(n); i++)
#define intt int64_t
#define all(vec) vec.begin(), vec.end()

int main() {
    int ans = 0;
    rep(i,3) {
        int c;
        scanf("%d", &c);
        ans += c;
    }
    printf("%d\n", ans);
}
