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#include <bits/stdc++.h>
//#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx")
//#pragma GCC target("avx,tune=native")
using namespace std;
typedef long long ll;
typedef long double ld;
int mysqrt(ll x){
int l = 0, r = 1e9 + 1;
while (r - l > 1){
int m = (l + r) / 2;
if (m * (ll)m <= x)
l = m;
else
r = m;
}
return l;
}
mt19937 rnd(1337);
ll AR = 19, BR = 13, CR = 23, XR = 228, YR = 322, MODR = 1e9 + 993;
ll myrand(){
ll ZR = (XR * AR + YR * BR + CR) % MODR;
XR = YR;
YR = ZR;
return ZR;
}
const int Mod = 1e9 + 7;
int bpow(int x, int y){
if (y == 0)
return 1;
if (y == 1)
return x;
int ret = bpow(x, y >> 1);
ret = (ret * (ll)ret) % Mod;
if (y & 1)
ret = (ret * (ll)x) % Mod;
return ret;
}
int bdiv(int x, int y){
return (x * (ll)bpow(y, Mod - 2)) % Mod;
}
void setmin(int &x, int y){
x = min(x, y);
}
void setmax(int &x, int y){
x = max(x, y);
}
const ll llinf = 1e18 + 100;
const int maxn = 1e5 + 100, inf = 2e9 + 100, sq = 2000, mod = 1e9 + 7, LG = 17;
bitset<500 * 500 + 1> q[500];
int n, a[500];
int main()
{
#ifdef ONPC
//ifstream cin("a.in");
//ofstream cout("a.out");
freopen("a.in", "r", stdin);
freopen("a.out", "w", stdout);
#else
ifstream cin("bootfall.in");
ofstream cout("bootfall.out");
//freopen("trap.in", "r", stdin);
//freopen("trap.out", "w", stdout);
#endif // ONPC
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n;
int W = 0;
for (int i = 0; i < n; i++){
cin >> a[i];
W += a[i];
}
for (int i = 1; i < n; i++)
if ((a[i] & 1) != (a[0] & 1)){
cout << 0 << '\n';
return 0;
}
for (int i = 0; i < n; i++)
q[i][0] = 1;
for (int i = 0; i < n; i++)
for (int j = 0; j < n; j++)
if (i != j)
q[j] |= q[j] << a[i];
int ss = 0;
if (W & 1){
cout << 0;
return 0;
}
for (int i = 0; i < n; i++)
if (q[i][W / 2]){
ss = 1;
break;
}
if (!ss){
cout << 0;
return 0;
}
vector<int> ans;
for (int k = 1; k <= W; k++)
if ((k & 1) == (a[0] & 1)){
bool is = 1;
for (int i = 0; i < n && is; i++)
if (((W + k - a[i]) / 2 > W || !q[i][(W + k - a[i]) / 2]) && (W - k - a[i] < 0 || !q[i][(W - k - a[i]) / 2]))
is = 0;
if (is)
ans.push_back(k);
}
cout << ans.size() << '\n';
for (auto i : ans)
cout << i << ' ';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
17420 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
17420 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
17420 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
17420 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
17420 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
17420 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
