oj.uz

Submission #572641

# Submission time Handle Problem Language Result Execution time Memory
572641 2022-06-04T21:44:10 Z Sam_a17 Bootfall (IZhO17_bootfall) C++14
100 / 100
 519 ms 6956 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
//#include "temp.cpp"
#include <cstdio>
using namespace std;

#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; print(x); cerr << endl;
#else
#define dbg(x)
#endif

#define sz(x) (int((x).size()))
#define len(x) (int)x.length()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define clr(x) (x).clear()
#define uniq(x) x.resize(unique(all(x)) - x.begin());
#define blt __builtin_popcount

#define pb push_back
#define popf pop_front
#define popb pop_back

void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}

template <class T, class V> void print(pair <T, V> p);
template <class T> void print(vector <T> v);
template <class T> void print(set <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]";}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define nl '\n'

// for grid problems
int dx[8] = {-1,0,1,0,1,-1,1,-1};
int dy[8] = {0,1,0,-1,1,1,-1,-1};

// lowest / (1 << 17) >= 1e5 / (1 << 18) >= 2e5 / (1 << 21) >= 1e6
void fastIO() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr); cout.tie(nullptr);
}
// file in/out
void setIO(string str = "") {
  fastIO();

  if (str != "") {
    freopen((str + ".in").c_str(), "r", stdin);
    freopen((str + ".out").c_str(), "w", stdout);
  }
}
// Indexed Set
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
const long long M = 501, N = M * M, mod = 1e9 + 7;
long long n, dp[N], answ[N], used[N];

void add(int value, int s) {
  for(int i = s - value; i >= 0; i--) {
    if(dp[i]) {
      dp[i + value] += dp[i];
      dp[i + value] %= mod;
    }
  }
}

void remove(int value, int s) {
  for(int j = value; j <= s; j++) {
    if(dp[j]) {
      dp[j] -= dp[j - value];
      if(dp[j] < 0) {
        dp[j] += mod;
      }
    }
  }
}

void solve_() {
  cin >> n;

  vector<int> a(n);
  int s = 0; dp[0] = 1;
  for(int i = 0; i < n; i++) {
    cin >> a[i], s += a[i];
    add(a[i], s);
  }

  if(s % 2 == 1 || !dp[s / 2]) {
    printf("0\n");
    return;
  }

  vector<int> answer;
  for(int i = 0; i < n; i++) {
    remove(a[i], s), s -= a[i];
    for(int j = 0; j <= s / 2; j++) {
      if(dp[j]) {
        // j
        // s - j
        answ[s - 2 * j]++;
        if( (s - 2 * j) > 0 && answ[s - 2 * j] == n && !used[s - 2 * j]) {
          used[s - 2 * j] = true, answer.push_back(s - 2 * j);
        }
      }
    }
    s += a[i], add(a[i], s);
  }

  printf("%d\n", sz(answer));
  sort(all(answer));
  for(auto i: answer) {
    printf("%d ", i);
  } printf("\n");
}

int main() {
  setIO();

  auto solve = [&](int test_case)-> void {
    while(test_case--) {
      solve_();
    }
  };

  int test_cases = 1;
  solve(test_cases);

  return 0;
}

Compilation message

bootfall.cpp: In function 'void setIO(std::string)':
bootfall.cpp:63:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |     freopen((str + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bootfall.cpp:64:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |     freopen((str + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 4 ms 468 KB Output is correct
26 Correct 5 ms 468 KB Output is correct
27 Correct 5 ms 468 KB Output is correct
28 Correct 4 ms 468 KB Output is correct
29 Correct 6 ms 468 KB Output is correct
30 Correct 3 ms 340 KB Output is correct
31 Correct 6 ms 468 KB Output is correct
32 Correct 3 ms 468 KB Output is correct
33 Correct 3 ms 468 KB Output is correct
34 Correct 3 ms 468 KB Output is correct
35 Correct 4 ms 468 KB Output is correct
36 Correct 3 ms 468 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 4 ms 468 KB Output is correct
26 Correct 5 ms 468 KB Output is correct
27 Correct 5 ms 468 KB Output is correct
28 Correct 4 ms 468 KB Output is correct
29 Correct 6 ms 468 KB Output is correct
30 Correct 3 ms 340 KB Output is correct
31 Correct 6 ms 468 KB Output is correct
32 Correct 3 ms 468 KB Output is correct
33 Correct 3 ms 468 KB Output is correct
34 Correct 3 ms 468 KB Output is correct
35 Correct 4 ms 468 KB Output is correct
36 Correct 3 ms 468 KB Output is correct
37 Correct 21 ms 904 KB Output is correct
38 Correct 24 ms 904 KB Output is correct
39 Correct 39 ms 1668 KB Output is correct
40 Correct 44 ms 1220 KB Output is correct
41 Correct 48 ms 1868 KB Output is correct
42 Correct 32 ms 1228 KB Output is correct
43 Correct 60 ms 1944 KB Output is correct
44 Correct 71 ms 1968 KB Output is correct
45 Correct 62 ms 1996 KB Output is correct
46 Correct 28 ms 840 KB Output is correct
47 Correct 35 ms 1180 KB Output is correct
48 Correct 62 ms 1912 KB Output is correct
49 Correct 54 ms 1540 KB Output is correct
50 Correct 37 ms 1228 KB Output is correct
51 Correct 9 ms 484 KB Output is correct
52 Correct 90 ms 2196 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 4 ms 468 KB Output is correct
26 Correct 5 ms 468 KB Output is correct
27 Correct 5 ms 468 KB Output is correct
28 Correct 4 ms 468 KB Output is correct
29 Correct 6 ms 468 KB Output is correct
30 Correct 3 ms 340 KB Output is correct
31 Correct 6 ms 468 KB Output is correct
32 Correct 3 ms 468 KB Output is correct
33 Correct 3 ms 468 KB Output is correct
34 Correct 3 ms 468 KB Output is correct
35 Correct 4 ms 468 KB Output is correct
36 Correct 3 ms 468 KB Output is correct
37 Correct 21 ms 904 KB Output is correct
38 Correct 24 ms 904 KB Output is correct
39 Correct 39 ms 1668 KB Output is correct
40 Correct 44 ms 1220 KB Output is correct
41 Correct 48 ms 1868 KB Output is correct
42 Correct 32 ms 1228 KB Output is correct
43 Correct 60 ms 1944 KB Output is correct
44 Correct 71 ms 1968 KB Output is correct
45 Correct 62 ms 1996 KB Output is correct
46 Correct 28 ms 840 KB Output is correct
47 Correct 35 ms 1180 KB Output is correct
48 Correct 62 ms 1912 KB Output is correct
49 Correct 54 ms 1540 KB Output is correct
50 Correct 37 ms 1228 KB Output is correct
51 Correct 9 ms 484 KB Output is correct
52 Correct 90 ms 2196 KB Output is correct
53 Correct 58 ms 1612 KB Output is correct
54 Correct 83 ms 1940 KB Output is correct
55 Correct 161 ms 3464 KB Output is correct
56 Correct 79 ms 1996 KB Output is correct
57 Correct 183 ms 3624 KB Output is correct
58 Correct 113 ms 2168 KB Output is correct
59 Correct 115 ms 2552 KB Output is correct
60 Correct 23 ms 712 KB Output is correct
61 Correct 138 ms 2816 KB Output is correct
62 Correct 134 ms 3100 KB Output is correct
63 Correct 143 ms 3224 KB Output is correct
64 Correct 156 ms 3200 KB Output is correct
65 Correct 56 ms 1452 KB Output is correct
66 Correct 49 ms 1612 KB Output is correct

Subtask #6
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 4 ms 468 KB Output is correct
26 Correct 5 ms 468 KB Output is correct
27 Correct 5 ms 468 KB Output is correct
28 Correct 4 ms 468 KB Output is correct
29 Correct 6 ms 468 KB Output is correct
30 Correct 3 ms 340 KB Output is correct
31 Correct 6 ms 468 KB Output is correct
32 Correct 3 ms 468 KB Output is correct
33 Correct 3 ms 468 KB Output is correct
34 Correct 3 ms 468 KB Output is correct
35 Correct 4 ms 468 KB Output is correct
36 Correct 3 ms 468 KB Output is correct
37 Correct 21 ms 904 KB Output is correct
38 Correct 24 ms 904 KB Output is correct
39 Correct 39 ms 1668 KB Output is correct
40 Correct 44 ms 1220 KB Output is correct
41 Correct 48 ms 1868 KB Output is correct
42 Correct 32 ms 1228 KB Output is correct
43 Correct 60 ms 1944 KB Output is correct
44 Correct 71 ms 1968 KB Output is correct
45 Correct 62 ms 1996 KB Output is correct
46 Correct 28 ms 840 KB Output is correct
47 Correct 35 ms 1180 KB Output is correct
48 Correct 62 ms 1912 KB Output is correct
49 Correct 54 ms 1540 KB Output is correct
50 Correct 37 ms 1228 KB Output is correct
51 Correct 9 ms 484 KB Output is correct
52 Correct 90 ms 2196 KB Output is correct
53 Correct 58 ms 1612 KB Output is correct
54 Correct 83 ms 1940 KB Output is correct
55 Correct 161 ms 3464 KB Output is correct
56 Correct 79 ms 1996 KB Output is correct
57 Correct 183 ms 3624 KB Output is correct
58 Correct 113 ms 2168 KB Output is correct
59 Correct 115 ms 2552 KB Output is correct
60 Correct 23 ms 712 KB Output is correct
61 Correct 138 ms 2816 KB Output is correct
62 Correct 134 ms 3100 KB Output is correct
63 Correct 143 ms 3224 KB Output is correct
64 Correct 156 ms 3200 KB Output is correct
65 Correct 56 ms 1452 KB Output is correct
66 Correct 49 ms 1612 KB Output is correct
67 Correct 134 ms 2604 KB Output is correct
68 Correct 37 ms 1252 KB Output is correct
69 Correct 450 ms 6308 KB Output is correct
70 Correct 277 ms 4104 KB Output is correct
71 Correct 259 ms 3924 KB Output is correct
72 Correct 292 ms 2276 KB Output is correct
73 Correct 264 ms 2268 KB Output is correct
74 Correct 497 ms 6768 KB Output is correct
75 Correct 365 ms 5340 KB Output is correct
76 Correct 498 ms 6920 KB Output is correct
77 Correct 519 ms 6956 KB Output is correct