Submission #45721

#	Time	Username	Problem	Language	Result	Execution time	Memory
45721		Just_Solve_The_Problem	Bali Sculptures (APIO15_sculpture)	C++11	9 / 100	1078 ms	760 KiB

sculpture

#include <bits/stdc++.h>

using namespace std;

#define pb push_back
#define eb emplace_back
#define ll long long
#define pii pair < int, int >
#define fr first
#define sc second
#define mk make_pair
#define sz(s) (int)s.size()
#define all(s) s.begin(), s.end()
#define ok puts("ok");
#define whatis(x) cerr << #x << " = " << x << endl;
#define pause system("pause");

const int N = (int)2e3 + 7;
const int inf = (int)1e9 + 7;

int n, a, b;
int ar[N];
ll dp[N][N];
ll pref[N];

ll get(int l, int r) {
  return pref[r] - pref[l - 1];
}

main() {
  scanf("%d %d %d", &n, &a, &b);
  for (int i = 1; i <= n; i++) {
    scanf("%d", &ar[i]);
    pref[i] = pref[i - 1] + ar[i];
  }
  ll mn = 1e18;
  for (int mask = 0; mask < (1 << n); mask++) {
    int ones = (int)__builtin_popcount(mask);
    if ((mask >> (n - 1)) & 1 ^ 1) ones++;
    if (a <= ones && ones <= b) {
      vector < int > v;
      for (int j = 0; j < n; j++) {
        if ((mask >> j) & 1) {
          v.pb(j + 1);
        }
      }
      ll ans = 0;
      if (v.empty()) {
        ans = pref[n];
      } else {
        for (int j = 1; j < sz(v); j++) {
          ans |= get(v[j - 1] + 1, v[j]);
        }
        ans |= pref[v[0]];
        ans |= get(v.back() + 1, n);
      }
      mn = min(mn, ans);
      v.clear();
    }
  }
  cout << mn;
}

Compilation message (stderr)

sculpture.cpp:30:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
sculpture.cpp: In function 'int main()':
sculpture.cpp:39:27: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
     if ((mask >> (n - 1)) & 1 ^ 1) ones++;
         ~~~~~~~~~~~~~~~~~~^~~
sculpture.cpp:31:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d", &n, &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:33:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &ar[i]);
     ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 21
• Subtask 4: 0 / 25
• Subtask 5: 0 / 29