45分求助,求助大佬
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45分求助,求助大佬
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lllyyyyyy楼主2025/1/12 15:10
#include <bits/stdc++.h>
using namespace std;
const int MAXSIZE = 100005;
int n;
long long  a[MAXSIZE], b[MAXSIZE];
long long f(long long  x) { //小于等于x的和的个数
	long long cnt = 0;
	int j = n;
	for (int i = 1; i <= n; i++) {
		while (j && a[i] + b[j] > x) {
			j --;
		}
		cnt += j ;
	}
	return cnt;
}
int main() {
	cin >> n;
	for (int i = 1; i <= n; i++)  cin >> a[i];
	for (int i = 1; i <= n; i++)  cin >> b[i];
	//二分
	long long  l = a[1] + b[1], r = a[n] + b[n];
	long long sum ;
	while (l <= r) {
		long long mid = l + (r - l) / 2;
		if (f(mid) > n) r = mid - 1;
		else if (f(mid) == n) {
			sum = mid;
			break;
		} else {
			l = mid + 1;
		}
		sum = mid;
	}
	int cnt2 = 0;
	vector<long long>Min(n);
	for (int i = 1; i <= n; i++) {
		if (a[i] + b[1] > sum) break;
		for (int j = 1; j <= n; j++) {
			if (a[i] + b[j] <= sum && cnt2 < n) {
				Min[cnt2++] = a[i] + b[j];
			} else break;
		}
		if (cnt2 >= n) break;
	}
	sort(Min.begin(), Min.end());
	for (int i = 0; i < n; i++) {
		cout << Min[i] << " ";
	}
	return 0;
}
2025/1/12 15:10
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