Submission #846306

#	Time	Username	Problem	Language	Result	Execution time	Memory
846306		vjudge1	Bali Sculptures (APIO15_sculpture)	C++17	71 / 100	19 ms	600 KiB

sculpture

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

using ll = long long;

const int N1 = 1e2+5;
const int N2 = 2e3+5;

int n, p, q, dp2[N2];
ll res = (1ll << 41)-1, a[N1];
bool dp1[N1][N1];

void sub1() {
    for(int i = 40; i >= 0; --i) {
        res ^= (1ll << i);
        
        memset(dp1, 0, sizeof(dp1));
        dp1[0][0] = 1;

        for(int j = 1; j <= n; ++j) {
            for(int g = 1; g <= min(j, q); ++g) {
                for(int k = 0; k < j; ++k) {
                    if(((a[j] - a[k]) & res) == (a[j] - a[k])) {
                        dp1[j][g] |= dp1[k][g-1];
                    }
                }
            }   
        }

        bool ok = 0;
        for(int j = p; j <= q; ++j) {
            ok |= dp1[n][j];
        }
        
        if(!ok) res ^= (1ll << i);
    }

    cout << res;
}

void sub2() {
    for(int i = 40; i >= 0; --i) {
        res ^= (1ll << i);

        memset(dp2, 0x3f, sizeof(dp2));
        dp2[0] = 0;
        
        for(int j = 1; j <= n; ++j) {
            for(int k = 0; k < j; ++k) {
                if(((a[j]-a[k]) & res) == (a[j]-a[k])) {
                    dp2[j] = min(dp2[j], dp2[k]+1);
                }
            }
        }

        if(dp2[n] > q) res ^= (1ll << i);
    }

    cout << res;
}

signed main() {
    if(fopen("test.inp", "r")) {
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }

    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    cin >> n >> p >> q;
    for(int i = 1; i <= n; ++i) {
        cin >> a[i];
        a[i] += a[i-1];
    }

    if(p == 1) sub2();
    else sub1();
}

Compilation message (stderr)

sculpture.cpp: In function 'int main()':
sculpture.cpp:64:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:65:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |         freopen("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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