Submission #1230258

#	Time	Username	Problem	Language	Result	Execution time	Memory
1230258		vidux	Aliens (IOI16_aliens)	C++17	4 / 100	0 ms	328 KiB

aliens

#include "aliens.h"

#include <bits/stdc++.h>
#define fi first
#define se second
#define ALL(x) (x.begin()), (x.end())
#define DEBUG(x) cerr << #x << ": " << x << endl;
#define DEBUG_ARR(x) cerr << #x << ": "; for (auto &y : x) cout << y << " "; cout << endl;
#define SZ(x) ((int)x.size())
using namespace std;
typedef long long ll;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

long long take_photos(int n, int m, int k, std::vector<int> r, std::vector<int> c) {
	vi mx(m+m, -1);
	for (int i = 0; i < n; i++) {
		int j = r[i]+c[i];
		mx[j] = max(mx[j], abs(r[i]-c[i])/2+1);
	}
	vi h = mx;
	for (int i = 1; i < m+m; i++) {
		h[i] = max(h[i], h[i-1]-(i&1));
	}
	for (int i = m+m-2; i >= 0; i--) {
		h[i] = max(h[i], h[i+1]-(i&1));
	}
	for (int i = 0; i < m+m; i++) h[i] = max(h[i], 0);
	ll ans = 0;
	for (int i = 0; i < m+m; i++) ans += max(0, h[i]*2-((i+1)&1));
	//DEBUG_ARR(mx);
	//DEBUG_ARR(h);
	return ans;
}

Compilation message (stderr)

aliens.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
aliens_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

• Subtask 1: 4 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 40