//
// ROIGold.cpp
// Main calisma
//
// Created by Rakhman on 05/02/2019.
// Copyright © 2019 Rakhman. All rights reserved.
//
#include <cstring>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <queue>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cassert>
#include <iterator>
#define ios ios_base::sync_with_stdio(0), cout.tie(0), cin.tie(0);
#define S second
#define F first
#define pb push_back
#define nl '\n'
#define NL cout << '\n';
#define EX exit(0)
#define all(s) s.begin(), s.end()
#define no_answer return cout << 0, 0;
#define FOR(i, start, finish, k) for(int i = start; i <= finish; i += k)
const int MXN = 4e5 + 200;
const long long MNN = 4e2 + 200;
const long long MOD = 1e9 + 7;
const long long INF = 1e18;
const int OO = 1e9 + 500;
typedef long long llong;
typedef unsigned long long ullong;
using namespace std;
int n, k, a[MXN], cnt;
bitset<73000> pr, su[510], no[501];
int sum = 0;
vector<int> v;
int main () {
ios;
cin >> n;
for(int i = 1; i <= n; i++){
cin >> a[i];
sum += a[i];
cnt += a[i] % 2;
}
if(sum % 2 == 1) {
no_answer;
}
if(cnt != 0 && cnt != n){
no_answer;
}
su[n + 1][0] = 1;
for(int i = n; i >= 1; i--){
su[i] = su[i + 1];
su[i] |= su[i] << a[i];
}
if(su[1][sum / 2] == 0){
no_answer;
}
pr[0] = 1;
for(int i = 1; i <= n; i++){
if(i <= n / 2){
no[i] = su[i + 1];
for(int j = 1; j <= i - 1; j++){
no[i] |= no[i] << a[j];
}
}else{
no[i] = pr;
for(int j = i + 1; j <= n; j ++){
no[i] |= no[i] << a[j];
}
}
pr |= pr << a[i];
}
for(int i = a[1] % 2; i <= sum; i += 2){
bool ok = 1;
for(int j = 1; j <= n; j++){
bitset<10000> lol = no[j];
lol |= lol << i;
if(lol[(sum + i - a[j]) / 2] == 0){
ok = 0;
break;
}
}
if(ok == 1) v.pb(i);
}
cout << v.size() << nl;
for(int i = 0; i < v.size(); i++){
cout << v[i] << ' ';
}
}
Compilation message
bootfall.cpp: In function 'int main()':
bootfall.cpp:99:37: error: conversion from 'std::bitset<73000>' to non-scalar type 'std::bitset<10000>' requested
bitset<10000> lol = no[j];
~~~~^
bootfall.cpp:109:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < v.size(); i++){
~~^~~~~~~~~~
