제출 #32674

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
32674		minimario	Bali Sculptures (APIO15_sculpture)	C++14	50 / 100	759 ms	2048 KiB

sculpture

#include <bits/stdc++.h>
using namespace std;
 
const int MAX = 2005;
 
typedef long long ll;
 
int y[MAX];
 
int dp[MAX];
ll p[MAX];
bool in[50];

// minimum number of parts that we need to cut 1...i into
// in order to have some kth bit off
 
vector<int> nesc;
bool works(ll x, int k) {
	for (int i : nesc) {
		if (x & (1LL<<i)) { return false; }
	}
	if (x & (1LL<<k)) { return false; }
	return true;
}
 
int main() {
	//freopen("a.in", "r", stdin);
	//freopen("a.out", "w", stdout);
	int n, a, b; scanf("%d %d %d", &n, &a, &b);
	for (int i=1; i<=n; i++) {
		scanf("%d", &y[i]);
		p[i] = p[i-1] + (ll)y[i];
	}
	for (int k=45; k>=0; k--) {
		for (int i=1; i<MAX; i++) { dp[i] = 2005; }
		for (int i=1; i<=n; i++) {
			for (int j=1; j<=i; j++) {
				ll sum = p[i] - p[j-1];
				if (works(sum, k)) {
					dp[i] = min(dp[i], dp[j-1] + 1);
				}
			}
		}
		if (dp[n] <= b) { nesc.push_back(k); }
	}
	ll sum = 0;
	
	for (int i : nesc) { in[i] = true; }
	for (int i=0; i<=45; i++) {
		if (!in[i]) { sum += 1LL<<i; }
	}
	printf("%lld\n", sum);
}

컴파일 시 표준 에러 (stderr) 메시지

sculpture.cpp: In function 'int main()':
sculpture.cpp:29:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int n, a, b; scanf("%d %d %d", &n, &a, &b);
                                            ^
sculpture.cpp:31:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &y[i]);
                     ^

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