Patuljci Solution:

#include <bits/stdc++.h>

using namespace std;

int main(){
    // #ifndef TESTING
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    // #endif

    int n_hats = 9;
    int sum = 0;
    int hats[n_hats];
    int i, j;
    for(i = 0; i < 9; i++){
        cin >> hats[i];
        sum += hats[i];
    }
    
    for(i = 0; i < 8; i++){
        for(j = 1; j < n_hats; j++){
            if(i == j){
                continue;
            }
            if(sum - hats[i] - hats[j] == 100){
                goto end;
            }
        }
    }
    end:
    for(int k = 0; k < n_hats; k++){
        if(k != i && k != j){
            cout << hats[k] << endl;
        }
    }
    return 0;
}