This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#ifdef ONLINE_JUDGE
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
#pragma GCC target( \
"sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#endif
#include <bits/stdc++.h>
#define speed \
ios_base::sync_with_stdio(0); \
cin.tie(0); \
cout.tie(0);
#define precision \
cout.precision(30); \
cerr.precision(10);
#define ll long long
#define ld long double
#define pb(x) push_back(x)
#define sz(x) (int)x.size()
#define mp(x, y) make_pair(x, y)
#define all(x) x.begin(), x.end()
#define pc(x) __builtin_popcount(x)
#define pcll(x) __builtin_popcountll(x)
#define F first
#define S second
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
void ioi(string name) {
freopen((name + ".in").c_str(), "r", stdin);
freopen((name + ".out").c_str(), "w", stdout);
}
int n, m, a[100005], b[100005], c[100005], d[100005];
vector<int> res;
void solve() {
res.clear();
cin >> n;
for (int i = 1; i <= n; i++) cin >> a[i], b[i] = b[i - 1] + a[i], c[i] = 1;
for (int i = 0; i <= 100000; i++) d[i] = 0;
for (int i = 1; i <= n; i++) {
for (int j = 100000 - a[i]; j >= 0; j--)
d[j + a[i]] = max(d[j + a[i]], d[j]);
d[a[i]] = i;
for (int j = i; j >= 1; j--)
c[i - j + 1] &= (!(b[i] - b[j - 1]) && (j <= d[b[i] - b[j - 1] / 2]));
}
for (int i = 1; i <= n; i++)
if (c[i]) res.pb(i);
cout << sz(res) << " ";
for (auto x : res) cout << x << " ";
cout << "\n";
}
int main() {
speed;
precision;
// code
int T;
cin >> T;
while (T--) solve();
// endl
#ifndef ONLINE_JUDGE
cerr << "\nTime elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
#endif
return 0;
}
Compilation message (stderr)
Main.cpp: In function 'void ioi(std::string)':
Main.cpp:27:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
27 | freopen((name + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:28:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
28 | freopen((name + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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