Submission #296802

#	Time	Username	Problem	Language	Result	Execution time	Memory
296802		Bruteforceman	Just Long Neckties (JOI20_ho_t1)	C++11	100 / 100	333 ms	19448 KiB

ho_t1

#include "bits/stdc++.h"
using namespace std;
int n;
int a[200010], b[200010], aux[200010];
int pre[200010], suf[200010];

int solve(int p) {
	vector <int> u, v;
	for(int i = 1; i <= (n + 1); i++) {
		if(i != p) u.push_back(a[i]);
	}
	for(int i = 1; i <= n; i++) {
		v.push_back(b[i]);
	}
	sort(u.begin(), u.end());
	sort(v.begin(), v.end());
	int ans = 0;
	for(int i = 0; i < u.size(); i++) {
		ans = max(ans, u[i] - v[i]);
	}
	return ans;
}

int main(int argc, char const *argv[])
{
	srand(time(NULL));
	scanf("%d", &n);
	map <int, int> id;
	for(int i = 1; i <= n+1; i++) {
		scanf("%d", &a[i]);
		aux[i] = a[i];
	}	
	for(int i = 1; i <= n; i++) {
		scanf("%d", &b[i]);
	}
	sort(a + 1, a + n + 2);
	sort(b + 1, b + n + 1);
	for(int i = 1; i <= n + 1; i++) {
		id[a[i]] = i;
	}
	for(int i = n+1; i >= 2; i--) {
		suf[i] = max(suf[i + 1], a[i] - b[i - 1]);
	}
	for(int i = 1; i <= n; i++) {
		pre[i] = max(pre[i - 1], a[i] - b[i]);
	}
	for(int i = 1; i <= n + 1; i++) {
		int x = id[aux[i]];
		printf("%d ", max(pre[x - 1], suf[x + 1]));
	}
	printf("\n");
	return 0;
}

Compilation message (stderr)

ho_t1.cpp: In function 'int solve(int)':
ho_t1.cpp:18:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |  for(int i = 0; i < u.size(); i++) {
      |                 ~~^~~~~~~~~~
ho_t1.cpp: In function 'int main(int, const char**)':
ho_t1.cpp:27:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   27 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
ho_t1.cpp:30:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   30 |   scanf("%d", &a[i]);
      |   ~~~~~^~~~~~~~~~~~~
ho_t1.cpp:34:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   34 |   scanf("%d", &b[i]);
      |   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 8 / 8
• Subtask 3: 91 / 91