`\color{pink}{#Bơ}`

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n;
    cin >> n;
    bool kt = false;

    for (int i = 2; i * (i + 1) / 2 <= n; i++) {
        int t = n - i * (i - 1) / 2;
        if (t % i == 0) {
            int a = t / i;
            for (int j = 0; j < i; j++) {
                cout << a + j;
                if (j != i - 1) cout << " + ";
            }
            cout << endl;
            kt = true;
            break;
        }
    }

    if (!kt) cout << "IMPOSSIBLE\n";
    return 0;
}

`\color{#1AD5F7}{⋆⟡H}\color{#1AD5F7}{a}\color{#4DA6E6}{r}\color{#668EDD}{i}\color{#8077D5}{i}\color{#995FCD}{i}\color{#EA2F90}{⟡⋆}`