Submission #1172304

#	Time	Username	Problem	Language	Result	Execution time	Memory
1172304		vibeduck	Bali Sculptures (APIO15_sculpture)	C++20	0 / 100	0 ms	328 KiB

sculpture

#include <bits/stdc++.h> 
using namespace std;

#define pb push_back
#define pf push_front
#define mp make_pair
#define fi first
#define se second
#define int long long
#define all(x) (x).begin(), (x).end()

typedef long double ld;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<vector<bool>> vvb;
typedef vector<vector<ll>> vvll;
typedef vector<string> vs;
typedef vector<vector<string>> vvs;
typedef vector<char> vc;
typedef vector<vector<char>> vvc;
typedef map<int, int> mii;
typedef unordered_map<int, int> umii;

const int mod = 1e9 + 7;
const int inf = INTMAX_MAX;
const bool tc = false;

/*
ST 3
• 1 <= N <= 100
• A = 1
• 1 <= B <= N
• 0 <= Yi <= 20
*/

int n, a, b;
const int mxn = 101;
int y[mxn];

int sub(int x, int y) {
    // is x a submask of y
    return ((x | y) <= y);
}

int can(int mask) {
    vi dp(n + 1, 1e18); dp[n] = 0;
    for (int i = n - 1; i >= 0; i--) {
        int s = 0;
        for (int j = i; j < n; j++) {
            s += y[j];
            if (sub(s, mask)) dp[i] = min(dp[i], dp[j + 1] + 1);
        }
    }
    return (dp[0] <= b);
}

inline void solve() {
    cin >> n >> a >> b;
    for (int i = 0; i < n; i++) cin >> y[i];   

    int ans = (1 << 33) - 1;
    for (int i = 32; i >= 0; i--) {
        int tmp = (ans ^ (1 << i));
        if (can(tmp)) ans = tmp;
    }
    cout << ans << '\n';
}

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

signed main() {
    ios::sync_with_stdio(false);
    cout.tie(0);
    cin.tie(0);
    //setIO();

    int t = 1;
    if (tc) {
        cin >> t;
    }

    while (t--) {
        solve();
    }
}

Compilation message (stderr)

sculpture.cpp: In function 'void solve()':
sculpture.cpp:66:18: warning: left shift count >= width of type [-Wshift-count-overflow]
   66 |     int ans = (1 << 33) - 1;
      |                ~~^~~~~
sculpture.cpp: In function 'void setIO(std::string)':
sculpture.cpp:75:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:76:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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