Task: | Line Segment Intersection |
Sender: | snude |
Submission time: | 2024-11-08 09:32:42 +0200 |
Language: | C++ (C++11) |
Status: | READY |
Result: | WRONG ANSWER |
test | verdict | time | |
---|---|---|---|
#1 | WRONG ANSWER | 0.07 s | details |
#2 | WRONG ANSWER | 0.08 s | details |
#3 | WRONG ANSWER | 0.10 s | details |
#4 | WRONG ANSWER | 0.12 s | details |
#5 | ACCEPTED | 0.00 s | details |
#6 | WRONG ANSWER | 0.00 s | details |
Code
#include <bits/stdc++.h>using namespace std;using ll = long long;// Debug printing#ifdef DEBUG#define deb(fmt, args...) printf("DEBUG: %d: " fmt, __LINE__, ##args)#define debug_print(fmt, args...) printf(fmt, ##args)#else#define deb(fmt, args...)#define debug_print(fmt, args...)#endifvoid print_array(vector<int> in, const string title = "Vector"){debug_print("DEBUG: %s [\nDEBUG: ", title.c_str());for (unsigned int i = 0; i < in.size(); i++) {debug_print("%d ", in[i]);}debug_print("\nDEBUG: ] END\n");}void print_matrix(vector<vector<int> > in, const string title = "Matrix"){debug_print("DEBUG: %s [\nDEBUG: ", title.c_str());for (unsigned int i = 0; i < in.size(); i++) {for (unsigned int j = 0; j < in[i].size(); j++) {debug_print("%d ", in[i][j]);}debug_print("\nDEBUG: ");}debug_print("DEBUG: ] END\n");}int main(int argc, char *argv[]){ios::sync_with_stdio(0);cin.tie(0);// Read the input parametersint n;cin >> n;for (int i = 0; i < n; i++) {int x1, y1, x2, y2;int x3, y3, x4, y4;cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;// Check if there are shared endpoints.if ((x1 == x3 && y1 == y3) || (x1 == x4 && y1 == y4) ||(x2 == x3 && y2 == y3) || (x2 == y4 && x2 == y4)) {cout << "YES\n";continue;}// Line segments are on the same lineint vx1, vy1, vx2, vy2;vx1 = x2 - x1;vy1 = y2 - y2;vx2 = x4 - x3;vy2 = y4 - y3;int cross = vx1 * vy2 - vx2 - vy1;if (cross == 0 && ((x3 >= x1 && x3 <= x2) || (x4 >= x1 && x4 <= x2))){cout << "YES\n";continue;} else {int dx1, dy1, dx2, dy2;dx1 = x3 - x1;dy1 = y3 - y1;dx2 = x3 - x2;dy2 = y3 - y2;int d = abs(dx1 * dy2 - dx2 * dy1) / 2;if ((cross > 0 && d <= 0) || (cross < 0 && d >= 0)) {cout << "YES\n";continue;}}cout << "NO\n";}}
Test details
Test 1
Verdict: WRONG ANSWER
input |
---|
100000 9 7 1 8 8 -5 0 2 10 1 -1 2 -4 1 -7 3 10 2 -8 6 1 2 2 -1 -10 1 9 -7 4 -3 -5 0 ... |
correct output |
---|
NO NO NO NO NO ... |
user output |
---|
YES YES NO NO NO ... Truncated |
Test 2
Verdict: WRONG ANSWER
input |
---|
100000 81 745 -967 768 -451 -490 -454... |
correct output |
---|
NO NO YES NO YES ... |
user output |
---|
YES YES NO YES YES ... Truncated |
Test 3
Verdict: WRONG ANSWER
input |
---|
100000 492853 -452834 -657156 -282543... |
correct output |
---|
YES YES NO YES YES ... |
user output |
---|
YES NO NO YES NO ... Truncated |
Test 4
Verdict: WRONG ANSWER
input |
---|
100000 788522666 939776556 -831492125... |
correct output |
---|
NO NO NO NO NO ... |
user output |
---|
NO YES NO YES YES ... Truncated |
Test 5
Verdict: ACCEPTED
input |
---|
1 1 6 6 6 4 4 1000000000 1000000... |
correct output |
---|
YES |
user output |
---|
YES |
Test 6
Verdict: WRONG ANSWER
input |
---|
1 -1000000000 1000000000 9999999... |
correct output |
---|
NO |
user output |
---|
YES |