Submission #92544

#	Time	Username	Problem	Language	Result	Execution time	Memory
92544		Shtef	NLO (COCI18_nlo)	C++14	88 / 110	377 ms	66560 KiB

nlo

#include <iostream>
#include <map>
#include <vector>
#include <cmath>
#include <set>
#include <utility>
#include <algorithm>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair <int, int> pii;
#define x first
#define y second
#define mp make_pair

int n, m, k;
vector <pii> c[100005];

void processcircle(int x, int y, int r, int val){
	for(int i = max(1, y - r) ; i <= min(m, y + r) ; ++i){
		int koef = sqrt((ll)(r - i + y) * (r + i - y));
		c[i].push_back(mp(max(1, x - koef), val));
		c[i].push_back(mp(min(n + 1, x + koef + 1), -val));
	}
}

int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
cin >> n >> m;
cin >> k;
for(int i = 0 ; i < k ; ++i){
	int x, y, r;
	cin >> x >> y >> r;
	processcircle(x, y, r, i + 1);
}
ll sol = 0;
for(int i = 1 ; i <= m ; ++i){
	int last = 1;
	set <int, greater <int> > s;
	sort(c[i].begin(), c[i].end());
	for(int j = 0 ; j < c[i].size() ; ){
		int t = c[i][j].x;
		sol += (ll)(t - last) * (k - (!s.empty() ? *s.begin() : 0LL));
		while(j < c[i].size() && c[i][j].x == t){
			int o = c[i][j].y;
			if(o < 0){
				s.erase(s.find(-o));
			}
			else{
				s.insert(o);
			}
			j++;
		}
		last = t;
	}
	sol += (n + 1 - last) * k;
}
cout << sol << endl;

return 0;
}

Compilation message (stderr)

nlo.cpp: In function 'int main()':
nlo.cpp:45:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 0 ; j < c[i].size() ; ){
                  ~~^~~~~~~~~~~~~
nlo.cpp:48:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(j < c[i].size() && c[i][j].x == t){
         ~~^~~~~~~~~~~~~

• Subtask 1: 88 / 110