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#include <iostream>
using namespace std;
 
int N, L[55];
//---------------------------------------------------------------------------------------------------
int LL[55];
int getsm(int a, int b) { // L[a] + L[a + 1] + ... + L[b]
    int sm = LL[b];
    if (a) sm -= LL[a - 1];
    return sm;
}
//---------------------------------------------------------------------------------------------------
int memo[55];
int f(int idx, int mi, int ma) {
    if (0 <= memo[idx]) return memo[idx];
    if (idx == N) return 1;
 
    int lim = N;
    if (idx == 0) lim = N - 1;
    rep(i, idx, lim) {
        int sm = getsm(idx, i);
        if (mi <= sm and sm <= ma) {
            if (f(i + 1, mi, ma)) return memo[idx] = 1;
        }
    }
 
    return memo[idx] = 0;
}
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> N;
    rep(i, 0, N) cin >> L[i];
    LL[0] = L[0];
    rep(i, 1, N) LL[i] = LL[i - 1] + L[i];
 
    vector<int> v;
    rep(i, 0, N) rep(j, i, N) {
        int sm = getsm(i, j);
        v.push_back(sm);
    }
    sort(all(v));
    v.erase(unique(all(v)), v.end());
 
    int n = v.size();
    int ans = inf;
    rep(i, 0, n) rep(j, i, n) {
        int mi = v[i];
        int ma = v[j];
        rep(k, 0, N + 1) memo[k] = -1;
        if (f(0, mi, ma)) chmin(ans, ma - mi);
    }
    cout << ans << endl;
}

prog.cpp: In function ‘int f(int, int, int)’:
prog.cpp:20:9: error: ‘i’ was not declared in this scope
     rep(i, idx, lim) {
         ^
prog.cpp:20:20: error: ‘rep’ was not declared in this scope
     rep(i, idx, lim) {
                    ^
prog.cpp: In function ‘void _main()’:
prog.cpp:32:9: error: ‘i’ was not declared in this scope
     rep(i, 0, N) cin >> L[i];
         ^
prog.cpp:32:16: error: ‘rep’ was not declared in this scope
     rep(i, 0, N) cin >> L[i];
                ^
prog.cpp:36:5: error: ‘vector’ was not declared in this scope
     vector<int> v;
     ^~~~~~
prog.cpp:36:12: error: expected primary-expression before ‘int’
     vector<int> v;
            ^~~
prog.cpp:41:14: error: ‘v’ was not declared in this scope
     sort(all(v));
              ^
prog.cpp:41:15: error: ‘all’ was not declared in this scope
     sort(all(v));
               ^
prog.cpp:41:16: error: ‘sort’ was not declared in this scope
     sort(all(v));
                ^
prog.cpp:42:26: error: ‘unique’ was not declared in this scope
     v.erase(unique(all(v)), v.end());
                          ^
prog.cpp:45:15: error: ‘inf’ was not declared in this scope
     int ans = inf;
               ^~~

Standard output is empty