Task: | Point in Polygon |
Sender: | eyong002 |
Submission time: | 2024-11-11 16:28:12 +0200 |
Language: | C++ (C++11) |
Status: | READY |
Result: | ACCEPTED |
test | verdict | time | |
---|---|---|---|
#1 | ACCEPTED | 0.00 s | details |
#2 | ACCEPTED | 0.01 s | details |
#3 | ACCEPTED | 0.00 s | details |
#4 | ACCEPTED | 0.00 s | details |
#5 | ACCEPTED | 0.00 s | details |
#6 | ACCEPTED | 0.00 s | details |
#7 | ACCEPTED | 0.00 s | details |
#8 | ACCEPTED | 0.00 s | details |
#9 | ACCEPTED | 0.00 s | details |
#10 | ACCEPTED | 0.00 s | details |
#11 | ACCEPTED | 0.00 s | details |
#12 | ACCEPTED | 0.00 s | details |
#13 | ACCEPTED | 0.00 s | details |
Compiler report
input/code.cpp: In function 'int main()': input/code.cpp:49:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result] 49 | scanf("%d %d", &N, &M); | ~~~~~^~~~~~~~~~~~~~~~~ input/code.cpp: In member function 'void Point::read()': input/code.cpp:9:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result] 9 | void read(){ scanf("%d %d", &x, &y); } | ~~~~~^~~~~~~~~~~~~~~~~
Code
#include <bits/stdc++.h> using namespace std; typedef long long ll; const int maxN = 1001; struct Point { int x, y; void read(){ scanf("%d %d", &x, &y); } Point operator +(const Point& b) const { return Point{x+b.x, y+b.y}; } Point operator -(const Point& b) const { return Point{x-b.x, y-b.y}; } ll operator *(const Point& b) const { return (ll) x * b.y - (ll) y * b.x; } void operator +=(const Point& b) { x += b.x; y += b.y; } void operator -=(const Point& b) { x -= b.x; y -= b.y; } void operator *=(const int k) { x *= k; y *= k; } ll cross(const Point& b, const Point& c) const { return (b - *this) * (c - *this); } }; int N, M; Point P[maxN]; bool pointlineintersect(Point P1, Point P2, Point P3){ if(P2.cross(P1, P3) != 0) return false; return (min(P2.x, P3.x) <= P1.x && P1.x <= max(P2.x, P3.x)) && (min(P2.y, P3.y) <= P1.y && P1.y <= max(P2.y, P3.y)); } void pointinpolygon(){ int cnt = 0; bool boundary = false; for(int i = 1; i <= N; i++){ int j = (i == N ? 1 : i+1); if(pointlineintersect(P[0], P[i], P[j])) boundary = true; if(P[i].x <= P[0].x && P[0].x < P[j].x && P[0].cross(P[i], P[j]) < 0) cnt++; else if(P[j].x <= P[0].x && P[0].x < P[i].x && P[0].cross(P[j], P[i]) < 0) cnt++; } if(boundary) printf("BOUNDARY\n"); else if(cnt&1) printf("INSIDE\n"); else printf("OUTSIDE\n"); } int main(){ scanf("%d %d", &N, &M); for(int i = 1; i <= N; i++) P[i].read(); for(int i = 0; i < M; i++){ P[0].read(); pointinpolygon(); } }
Test details
Test 1
Verdict: ACCEPTED
input |
---|
100 1000 -7 -19 91 77 100 100 64 60 ... |
correct output |
---|
INSIDE OUTSIDE INSIDE INSIDE INSIDE ... |
user output |
---|
INSIDE OUTSIDE INSIDE INSIDE INSIDE ... |
Test 2
Verdict: ACCEPTED
input |
---|
1000 1000 365625896 -113418831 278762563 38777445 250367343 -96991975 175866909 -129766978 ... |
correct output |
---|
OUTSIDE OUTSIDE INSIDE OUTSIDE OUTSIDE ... |
user output |
---|
OUTSIDE OUTSIDE INSIDE OUTSIDE OUTSIDE ... |
Test 3
Verdict: ACCEPTED
input |
---|
4 1 1 5 5 5 5 1 1 1 ... |
correct output |
---|
INSIDE |
user output |
---|
INSIDE |
Test 4
Verdict: ACCEPTED
input |
---|
4 1 1 5 5 5 5 1 1 1 ... |
correct output |
---|
OUTSIDE |
user output |
---|
OUTSIDE |
Test 5
Verdict: ACCEPTED
input |
---|
4 1 1 100 2 50 1 20 0 50 ... |
correct output |
---|
INSIDE |
user output |
---|
INSIDE |
Test 6
Verdict: ACCEPTED
input |
---|
8 1 0 0 0 2 1 1 2 2 ... |
correct output |
---|
INSIDE |
user output |
---|
INSIDE |
Test 7
Verdict: ACCEPTED
input |
---|
4 4 0 0 3 0 3 4 0 4 ... |
correct output |
---|
INSIDE BOUNDARY OUTSIDE BOUNDARY |
user output |
---|
INSIDE BOUNDARY OUTSIDE BOUNDARY |
Test 8
Verdict: ACCEPTED
input |
---|
6 1 0 0 0 2 3 1 2 2 ... |
correct output |
---|
INSIDE |
user output |
---|
INSIDE |
Test 9
Verdict: ACCEPTED
input |
---|
3 1 0 0 1 1000000000 -3 0 1 1 |
correct output |
---|
OUTSIDE |
user output |
---|
OUTSIDE |
Test 10
Verdict: ACCEPTED
input |
---|
3 1 -100000 0 -1000000000 -999999999 1000000000 1000000000 0 0 |
correct output |
---|
OUTSIDE |
user output |
---|
OUTSIDE |
Test 11
Verdict: ACCEPTED
input |
---|
3 1 -100000 0 -999999999 -1000000000 1000 1000 0 0 |
correct output |
---|
INSIDE |
user output |
---|
INSIDE |
Test 12
Verdict: ACCEPTED
input |
---|
4 1 -4 1 -6 1 -6 -1 -4 -1 ... |
correct output |
---|
INSIDE |
user output |
---|
INSIDE |
Test 13
Verdict: ACCEPTED
input |
---|
3 1 0 10 0 -10 10 0 1 0 |
correct output |
---|
INSIDE |
user output |
---|
INSIDE |