#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
using ll = long long;
//#define int long long
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define FORD(i, a, b) for (int i = (b); i >= (a); i --)
#define REP(i, a) for (int i = 0; i < (a); ++i)
#define REPD(i, a) for (int i = (a) - 1; i >= 0; --i)
#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)
constexpr ll LINF = (1ll << 60);
constexpr int INF = (1ll << 30);
constexpr int Mod = 1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
/*
Phu Trong from Nguyen Tat Thanh High School for gifted student
*/
template <class X, class Y>
bool minimize(X &x, const Y &y){
X eps = 1e-9;
if (x > y + eps) {x = y; return 1;}
return 0;
}
template <class X, class Y>
bool maximize(X &x, const Y &y){
X eps = 1e-9;
if (x + eps < y) {x = y; return 1;}
return 0;
}
#define MAX 505
int nArr, sum = 0;
void add(int &x, int y){
x += y;
if(x >= Mod) x -= Mod;
if(x < 0) x += Mod;
}
int dp[MAX * MAX], A[MAX];
int total = 0;
void add(int x){
for (int s = total; s >= x; --s){
add(dp[s], dp[s - x]);
}
}
void sub(int x){
for (int s = x; s <= total; ++s){
add(dp[s], -dp[s - x]);
}
}
int cnt[MAX * MAX];
void process(void){
cin >> nArr;
for (int i = 1; i <= nArr; ++i) cin >> A[i], sum += A[i];
total = sum;
dp[0] = 1;
for (int i = 1; i <= nArr; ++i) add(A[i]);
if(sum % 2 != 0 or dp[sum / 2] == 0) return void(cout << 0);
for (int i = 1; i <= nArr; ++i){
sub(A[i]);
sum -= A[i];
for (int s = 0; s <= sum / 2; ++s){
if(dp[s] > 0){
int dif = abs(sum - 2 * s);
cnt[dif]++;
}
}
add(A[i]);
sum += A[i];
}
vector<int> ans;
for (int s = 1; s < total; ++s){
if(cnt[s] == nArr){
ans.emplace_back(s);
}
}
cout << (int)ans.size() << '\n';
for(int&v : ans) cout << v << " ";
}
signed main(){
#define name "Whisper"
cin.tie(nullptr) -> sync_with_stdio(false);
//freopen(name".inp", "r", stdin);
//freopen(name".out", "w", stdout);
process();
return (0 ^ 0);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
336 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
336 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
336 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
336 KB |
Output is correct |
18 |
Correct |
1 ms |
336 KB |
Output is correct |
19 |
Correct |
1 ms |
336 KB |
Output is correct |
20 |
Correct |
1 ms |
336 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
336 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
336 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
336 KB |
Output is correct |
18 |
Correct |
1 ms |
336 KB |
Output is correct |
19 |
Correct |
1 ms |
336 KB |
Output is correct |
20 |
Correct |
1 ms |
336 KB |
Output is correct |
21 |
Correct |
2 ms |
504 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
336 KB |
Output is correct |
24 |
Correct |
2 ms |
336 KB |
Output is correct |
25 |
Correct |
3 ms |
592 KB |
Output is correct |
26 |
Correct |
2 ms |
592 KB |
Output is correct |
27 |
Correct |
2 ms |
336 KB |
Output is correct |
28 |
Correct |
2 ms |
336 KB |
Output is correct |
29 |
Correct |
3 ms |
736 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
336 KB |
Output is correct |
33 |
Correct |
3 ms |
336 KB |
Output is correct |
34 |
Correct |
3 ms |
336 KB |
Output is correct |
35 |
Correct |
2 ms |
336 KB |
Output is correct |
36 |
Correct |
2 ms |
336 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
336 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
336 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
336 KB |
Output is correct |
18 |
Correct |
1 ms |
336 KB |
Output is correct |
19 |
Correct |
1 ms |
336 KB |
Output is correct |
20 |
Correct |
1 ms |
336 KB |
Output is correct |
21 |
Correct |
2 ms |
504 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
336 KB |
Output is correct |
24 |
Correct |
2 ms |
336 KB |
Output is correct |
25 |
Correct |
3 ms |
592 KB |
Output is correct |
26 |
Correct |
2 ms |
592 KB |
Output is correct |
27 |
Correct |
2 ms |
336 KB |
Output is correct |
28 |
Correct |
2 ms |
336 KB |
Output is correct |
29 |
Correct |
3 ms |
736 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
336 KB |
Output is correct |
33 |
Correct |
3 ms |
336 KB |
Output is correct |
34 |
Correct |
3 ms |
336 KB |
Output is correct |
35 |
Correct |
2 ms |
336 KB |
Output is correct |
36 |
Correct |
2 ms |
336 KB |
Output is correct |
37 |
Correct |
8 ms |
592 KB |
Output is correct |
38 |
Correct |
8 ms |
764 KB |
Output is correct |
39 |
Correct |
28 ms |
848 KB |
Output is correct |
40 |
Correct |
18 ms |
848 KB |
Output is correct |
41 |
Correct |
52 ms |
848 KB |
Output is correct |
42 |
Correct |
16 ms |
760 KB |
Output is correct |
43 |
Correct |
33 ms |
1096 KB |
Output is correct |
44 |
Correct |
27 ms |
1104 KB |
Output is correct |
45 |
Correct |
28 ms |
1104 KB |
Output is correct |
46 |
Correct |
16 ms |
592 KB |
Output is correct |
47 |
Correct |
17 ms |
868 KB |
Output is correct |
48 |
Correct |
30 ms |
1108 KB |
Output is correct |
49 |
Correct |
29 ms |
976 KB |
Output is correct |
50 |
Correct |
17 ms |
848 KB |
Output is correct |
51 |
Correct |
4 ms |
592 KB |
Output is correct |
52 |
Correct |
36 ms |
1268 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
336 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
336 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
336 KB |
Output is correct |
18 |
Correct |
1 ms |
336 KB |
Output is correct |
19 |
Correct |
1 ms |
336 KB |
Output is correct |
20 |
Correct |
1 ms |
336 KB |
Output is correct |
21 |
Correct |
2 ms |
504 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
336 KB |
Output is correct |
24 |
Correct |
2 ms |
336 KB |
Output is correct |
25 |
Correct |
3 ms |
592 KB |
Output is correct |
26 |
Correct |
2 ms |
592 KB |
Output is correct |
27 |
Correct |
2 ms |
336 KB |
Output is correct |
28 |
Correct |
2 ms |
336 KB |
Output is correct |
29 |
Correct |
3 ms |
736 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
336 KB |
Output is correct |
33 |
Correct |
3 ms |
336 KB |
Output is correct |
34 |
Correct |
3 ms |
336 KB |
Output is correct |
35 |
Correct |
2 ms |
336 KB |
Output is correct |
36 |
Correct |
2 ms |
336 KB |
Output is correct |
37 |
Correct |
8 ms |
592 KB |
Output is correct |
38 |
Correct |
8 ms |
764 KB |
Output is correct |
39 |
Correct |
28 ms |
848 KB |
Output is correct |
40 |
Correct |
18 ms |
848 KB |
Output is correct |
41 |
Correct |
52 ms |
848 KB |
Output is correct |
42 |
Correct |
16 ms |
760 KB |
Output is correct |
43 |
Correct |
33 ms |
1096 KB |
Output is correct |
44 |
Correct |
27 ms |
1104 KB |
Output is correct |
45 |
Correct |
28 ms |
1104 KB |
Output is correct |
46 |
Correct |
16 ms |
592 KB |
Output is correct |
47 |
Correct |
17 ms |
868 KB |
Output is correct |
48 |
Correct |
30 ms |
1108 KB |
Output is correct |
49 |
Correct |
29 ms |
976 KB |
Output is correct |
50 |
Correct |
17 ms |
848 KB |
Output is correct |
51 |
Correct |
4 ms |
592 KB |
Output is correct |
52 |
Correct |
36 ms |
1268 KB |
Output is correct |
53 |
Correct |
27 ms |
1104 KB |
Output is correct |
54 |
Correct |
41 ms |
1184 KB |
Output is correct |
55 |
Correct |
77 ms |
1728 KB |
Output is correct |
56 |
Correct |
33 ms |
1164 KB |
Output is correct |
57 |
Correct |
79 ms |
1996 KB |
Output is correct |
58 |
Correct |
42 ms |
1356 KB |
Output is correct |
59 |
Correct |
52 ms |
1484 KB |
Output is correct |
60 |
Correct |
11 ms |
592 KB |
Output is correct |
61 |
Correct |
77 ms |
1524 KB |
Output is correct |
62 |
Correct |
63 ms |
1740 KB |
Output is correct |
63 |
Correct |
66 ms |
1740 KB |
Output is correct |
64 |
Correct |
62 ms |
1740 KB |
Output is correct |
65 |
Correct |
30 ms |
1016 KB |
Output is correct |
66 |
Correct |
33 ms |
880 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
336 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
336 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
336 KB |
Output is correct |
18 |
Correct |
1 ms |
336 KB |
Output is correct |
19 |
Correct |
1 ms |
336 KB |
Output is correct |
20 |
Correct |
1 ms |
336 KB |
Output is correct |
21 |
Correct |
2 ms |
504 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
336 KB |
Output is correct |
24 |
Correct |
2 ms |
336 KB |
Output is correct |
25 |
Correct |
3 ms |
592 KB |
Output is correct |
26 |
Correct |
2 ms |
592 KB |
Output is correct |
27 |
Correct |
2 ms |
336 KB |
Output is correct |
28 |
Correct |
2 ms |
336 KB |
Output is correct |
29 |
Correct |
3 ms |
736 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
336 KB |
Output is correct |
33 |
Correct |
3 ms |
336 KB |
Output is correct |
34 |
Correct |
3 ms |
336 KB |
Output is correct |
35 |
Correct |
2 ms |
336 KB |
Output is correct |
36 |
Correct |
2 ms |
336 KB |
Output is correct |
37 |
Correct |
8 ms |
592 KB |
Output is correct |
38 |
Correct |
8 ms |
764 KB |
Output is correct |
39 |
Correct |
28 ms |
848 KB |
Output is correct |
40 |
Correct |
18 ms |
848 KB |
Output is correct |
41 |
Correct |
52 ms |
848 KB |
Output is correct |
42 |
Correct |
16 ms |
760 KB |
Output is correct |
43 |
Correct |
33 ms |
1096 KB |
Output is correct |
44 |
Correct |
27 ms |
1104 KB |
Output is correct |
45 |
Correct |
28 ms |
1104 KB |
Output is correct |
46 |
Correct |
16 ms |
592 KB |
Output is correct |
47 |
Correct |
17 ms |
868 KB |
Output is correct |
48 |
Correct |
30 ms |
1108 KB |
Output is correct |
49 |
Correct |
29 ms |
976 KB |
Output is correct |
50 |
Correct |
17 ms |
848 KB |
Output is correct |
51 |
Correct |
4 ms |
592 KB |
Output is correct |
52 |
Correct |
36 ms |
1268 KB |
Output is correct |
53 |
Correct |
27 ms |
1104 KB |
Output is correct |
54 |
Correct |
41 ms |
1184 KB |
Output is correct |
55 |
Correct |
77 ms |
1728 KB |
Output is correct |
56 |
Correct |
33 ms |
1164 KB |
Output is correct |
57 |
Correct |
79 ms |
1996 KB |
Output is correct |
58 |
Correct |
42 ms |
1356 KB |
Output is correct |
59 |
Correct |
52 ms |
1484 KB |
Output is correct |
60 |
Correct |
11 ms |
592 KB |
Output is correct |
61 |
Correct |
77 ms |
1524 KB |
Output is correct |
62 |
Correct |
63 ms |
1740 KB |
Output is correct |
63 |
Correct |
66 ms |
1740 KB |
Output is correct |
64 |
Correct |
62 ms |
1740 KB |
Output is correct |
65 |
Correct |
30 ms |
1016 KB |
Output is correct |
66 |
Correct |
33 ms |
880 KB |
Output is correct |
67 |
Correct |
68 ms |
1504 KB |
Output is correct |
68 |
Correct |
31 ms |
848 KB |
Output is correct |
69 |
Correct |
214 ms |
3272 KB |
Output is correct |
70 |
Correct |
124 ms |
2000 KB |
Output is correct |
71 |
Correct |
118 ms |
1996 KB |
Output is correct |
72 |
Correct |
121 ms |
1352 KB |
Output is correct |
73 |
Correct |
121 ms |
1608 KB |
Output is correct |
74 |
Correct |
213 ms |
3272 KB |
Output is correct |
75 |
Correct |
164 ms |
2768 KB |
Output is correct |
76 |
Correct |
232 ms |
3336 KB |
Output is correct |
77 |
Correct |
221 ms |
3528 KB |
Output is correct |