Submission #1240272

#	Time	Username	Problem	Language	Result	Execution time	Memory
1240272		PenguinsAreCute	Dragon 2 (JOI17_dragon2)	C++17	15 / 100	4091 ms	35964 KiB

dragon2

#include <bits/stdc++.h>
using namespace std;
using cp = complex<long double>;
int main() {
	int n, m;
	cin >> n >> m;
	vector<cp> dragon[m];
	for(int i=0;i<n;i++) {
		int a, b, c;
		cin >> a >> b >> c;
		dragon[c-1].push_back({a,b});
	}
	if(1) {
		cp st, nd;
		int d1, e1, d2, e2;
		cin >> d1 >> e1 >> d2 >> e2;
		st = cp(d1,e1);
		nd = cp(d2,e2);
		for(int i=0;i<m;i++)
			for(auto &j: dragon[i])
				j = (j - st) / (nd - st);
	}
	int ans[m][m];
	memset(ans,0,sizeof(ans));
	for(int i=0;i<m;i++)
		for(auto c1: dragon[i])
			for(int j=0;j<m;j++)
				for(auto c2: dragon[j])
					if((c2 / c1).imag() * c1.imag() < 0 && ((c2 - cp(1)) / (c1 - cp(1))).imag() * c1.imag() > 0)
						ans[i][j]++;
	int q;
	cin >> q;
	for(int f,g;q--;) {
		cin >> f >> g;
		f--; g--;
		cout << ans[f][g] << "\n";
	}
}

Compilation message (stderr)

dragon2.cpp: In function 'int main()':
dragon2.cpp:11:40: warning: narrowing conversion of 'a' from 'int' to 'long double' [-Wnarrowing]
   11 |                 dragon[c-1].push_back({a,b});
      |                                        ^
dragon2.cpp:11:42: warning: narrowing conversion of 'b' from 'int' to 'long double' [-Wnarrowing]
   11 |                 dragon[c-1].push_back({a,b});
      |                                          ^

• Subtask 1: 15 / 15
• Subtask 2: 0 / 45
• Subtask 3: 0 / 40