Submission #521340

#	Time	Username	Problem	Language	Result	Execution time	Memory
521340		ACE_	Bali Sculptures (APIO15_sculpture)	C++14	100 / 100	90 ms	376 KiB

sculpture

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int maxn = 2005 + 5, inf = 4000;
int t, a[maxn], dp[maxn], f[105][105];
main(){
	int n, A, B;
	cin >> n >> A >> B;
	for(int i = 1; i <= n; i++) {
		cin >> a[i];
		a[i] += a[i - 1];
	}
	if(A == 1) {
		int cur = 0, X = 0;
		for(int i = 40; i >= 0; i--) {
			X += 1ll << i; 
			for(int r = 1; r <= n; r++) {
				dp[r] = inf;
				for(int l = 1; l <= r; l++) {
					int sum = (a[r] - a[l - 1]) & X;
					if(!((sum ^ cur) & sum)) {
						dp[r] = min(dp[l - 1] + 1, dp[r]);
					}
				}
			}
			if(dp[n] > B) {
				cur += 1ll << i;
			}
		}
		cout << cur;
		return 0;
	}
	int cur = 0, X = 0;
	for(int i = 40; i >= 0; i--) {
		X += 1ll << i;
		for(int r = 1; r <= n; r++) {
			f[0][0] = 1;
			for(int c = 0; c <= r; c++) f[r][c] = 0;
			for(int l = 1; l <= r; l++) {
				int sum = (a[r] - a[l - 1]) & X;
				if(!((sum ^ cur) & sum)) { 
					for(int c = 1; c <= r; c++)
					f[r][c] |= f[l - 1][c - 1]; 
				}
			}
		}
		int F = 0;
		for(int c = A; c <= B; c++)  F |= f[n][c];
		if(!F) {
			cur += 1ll << i; 
		}
	}
	cout << cur;
}

Compilation message (stderr)

sculpture.cpp:6:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    6 | main(){
      | ^~~~

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