Submission #554656

#	Time	Username	Problem	Language	Result	Execution time	Memory
554656		kwongweng	Bali Sculptures (APIO15_sculpture)	C++17	0 / 100	1 ms	596 KiB

sculpture

/*
Solution for APIO 2015 - Bali Sculpture
Tags : 
*/

#include <bits/stdc++.h>
using namespace std;
 
#pragma GCC target ("avx2")
#pragma GCC optimization ("Ofast")
#pragma GCC optimization ("unroll-loops")
 
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef long double ld;
typedef pair<ll, ll> pll;
#define FOR(i, a, b) for(int i = a; i < b; i++)
#define ROF(i, a, b) for(int i = a; i >= b; i--)
#define ms memset
#define pb push_back
#define fi first
#define se second
 
ll MOD = 1000000007;
 
ll power(ll base, ll n){
	if (n == 0) return 1;
	if (n == 1) return base;
	ll halfn = power(base, n/2);
	if (n % 2 == 0) return (halfn * halfn) % MOD;
	return (((halfn * halfn) % MOD) * base) % MOD;
}
 
ll inverse(ll n){
	return power(n, MOD-2);
}
 
ll add(ll a, ll b){
	return (a+b) % MOD;
}
 
ll mul(ll a, ll b){
	a %= MOD;
	return (a*b) % MOD;
}
 
ll gcd(ll a, ll b){
    if (a == 1) return 1;
    if (a == 0) return b;
    return gcd(b%a, a);
}
 
void solve(){
    int n, a, b; cin >> n >> a >> b;
    vi y(n+1); FOR(i,1,n+1) cin >> y[i];
    vi p(n+1); FOR(i,1,n+1) p[i] = p[i-1] + y[i];
    // O(n^3 * 40)
    int ans = MOD;
    int max_a = (n/b+1)*40;
    int dp[n+1][b+1][max_a];
    ms(dp,-1,sizeof(dp));
    FOR(i,1,n+1){
        dp[i][1][p[i]-p[0]] = 1;
    }
    FOR(j,2,b+1){
        FOR(i,2,n+1){
            FOR(k,1,i){
                int val = p[i]-p[k];
                FOR(l,0,max_a){
                    if (dp[k][j-1][l] != -1){
                        int new_val = l|val;
                        dp[i][j][new_val] = 1;
                    }
                }
            }
        }
    }
    FOR(l,0,max_a){
        bool sol = false;
        FOR(j,a,b+1){
            if (dp[n][j][l] == 1){
                cout<<l; sol = true;
                break;
            }
        }
        if (sol) break;
    }
}
 
int main() {
    ios::sync_with_stdio(false);
    int TC = 1;
    //cin >> TC;
    FOR(i, 1, TC+1){
        //cout << "Case #" << i << ": ";
        solve();
    }
}

Compilation message (stderr)

sculpture.cpp:10: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   10 | #pragma GCC optimization ("Ofast")
      | 
sculpture.cpp:11: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   11 | #pragma GCC optimization ("unroll-loops")
      | 
sculpture.cpp: In function 'void solve()':
sculpture.cpp:60:9: warning: unused variable 'ans' [-Wunused-variable]
   60 |     int ans = MOD;
      |         ^~~

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