Submission #270378

#	Time	Username	Problem	Language	Result	Execution time	Memory
270378		BeanZ	Bali Sculptures (APIO15_sculpture)	C++14	16 / 100	1085 ms	512 KiB

sculpture

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define endl '\n'
const int N = 3e6 + 5;
ll dp[105][105], a[2005], sum[2005];
bool chk(ll now, ll need){
        return ((need & now) == now);
}
int main(){
        ios_base::sync_with_stdio(false);
        cin.tie(0);
        if (fopen("VietCT.INP", "r")){
                freopen("VietCT.INP", "r", stdin);
                freopen("VietCT.OUT", "w", stdout);
        }
        ll n, L, R;
        cin >> n >> L >> R;
        for (int i = 1; i <= n; i++) cin >> a[i];
        for (int i = 1; i <= n; i++) sum[i] = sum[i - 1] + a[i];
        ll ans = 1e18;
        for (int s = 0; s < 2048; s++){
                for (int i = 0; i <= n; i++){
                        for (int j = 0; j <= R; j++){
                                dp[j][i] = 1e18;
                        }
                }
                for (int i = 1; i <= n; i++) if (chk(sum[i], s)) dp[1][i] = sum[i];
                if (1 >= L) ans = min(ans, dp[1][n]);
                for (int i = 2; i <= R; i++){
                        for (int j = 1; j <= n; j++){
                                for (int k = 0; k < j; k++){
                                        ll cost = dp[i - 1][k] | (sum[j] - sum[k]);
                                        if (chk(cost, s)){
                                                if (dp[i][j] > cost){
                                                        dp[i][j] = cost;
                                                }
                                        }
                                }
                        }
                        if (i >= L) ans = min(ans, dp[i][n]);
                }
        }
        cout << ans;
}
/*
6 1 3
8 1 2 1 5 4
*/

Compilation message (stderr)

sculpture.cpp: In function 'int main()':
sculpture.cpp:16:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   16 |                 freopen("VietCT.INP", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:17:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   17 |                 freopen("VietCT.OUT", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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