이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#define int long long
#define endl "\n"
using namespace std;
void solve(){
int n;
cin>>n;
vector<pair<pair<int,int>,int>>v(n);
vector<bool>gone(n,false);
for(int i=0;i<n;i++){
int x,y;char c;
cin>>x>>y>>c;
int num;
if(c=='N'){
num=0;
}else if(c=='S'){
num=1;
}else if(c=='E'){
num=2;
}else if(c=='W'){
num=3;
}
v[i]=make_pair(make_pair(x,y),num);
}
set<pair<int,pair<int,int>>>collisions;
for(int i=0;i<n;i++){
pair<pair<int,int>,int>cur=v[i];
int num1=cur.second;
for(int j=0;j<n;j++){
pair<pair<int,int>,int>novi=v[j];
int num2=novi.second;
if(num1==0&&num2==1){
if(cur.first.first==novi.first.first){
collisions.insert(make_pair((cur.first.second-novi.first.second)/2,make_pair(i,j)));
}
}else if(num1==0&&num2==2){
if(cur.first.first+novi.first.second==cur.first.second+novi.first.first){
collisions.insert(make_pair(cur.first.second-novi.first.second,make_pair(i,j)));
}
}else if(num1==0&&num2==3){
if(cur.first.first+novi.first.first==cur.first.second+novi.first.second){
collisions.insert(make_pair(cur.first.second-novi.first.second,make_pair(i,j)));
}
}else if(num1==1&&num2==0){
if(cur.first.first==novi.first.first){
collisions.insert(make_pair((novi.first.second-cur.first.second)/2,make_pair(i,j)));
}
}else if(num1==1&&num2==2){
if(cur.first.first+novi.first.first==cur.first.second+novi.first.second){
collisions.insert(make_pair(novi.first.second-cur.first.second,make_pair(i,j)));
}
}else if(num1==1&&num2==3){
if(cur.first.first+novi.first.second==cur.first.second+novi.first.first){
collisions.insert(make_pair(novi.first.second-cur.first.second,make_pair(i,j)));
}
}else if(num1==2&&num2==0){
if(cur.first.first+novi.first.second==cur.first.second+novi.first.first){
collisions.insert(make_pair(novi.first.second-cur.first.second,make_pair(i,j)));
}
}else if(num1==2&&num2==1){
if(cur.first.first+novi.first.first==cur.first.second+novi.first.second){
collisions.insert(make_pair(cur.first.second-novi.first.second,make_pair(i,j)));
}
}else if(num1==2&&num2==3){
if(cur.first.second==novi.first.second){
collisions.insert(make_pair((novi.first.first-cur.first.first)/2,make_pair(i,j)));
}
}else if(num1==3&&num2==0){
if(cur.first.first+novi.first.first==cur.first.second+novi.first.second){
collisions.insert(make_pair(novi.first.second-cur.first.second,make_pair(i,j)));
}
}else if(num1==3&&num2==1){
if(cur.first.first+novi.first.second==cur.first.second+novi.first.first){
collisions.insert(make_pair(cur.first.second-novi.first.second,make_pair(i,j)));
}else if(num1==3&&num2==2){
if(cur.first.second==novi.first.second){
collisions.insert(make_pair((cur.first.first-novi.first.first)/2,make_pair(i,j)));
}
}
}
}
}
auto it1=collisions.lower_bound(make_pair(0,make_pair(0,0)));
vector<int>tobeerased;
int val=-1;
while(it1!=collisions.end()){
if((!gone[(*it1).second.first])&&(!gone[(*it1).second.second])){
if(val=-1){
val=(*it1).first;
tobeerased.push_back((*it1).second.first);
tobeerased.push_back((*it1).second.second);
}else if(val!=(*it1).first){
for(int neznamvise=0;neznamvise<tobeerased.size();neznamvise++){
gone[tobeerased[neznamvise]]=true;
}
tobeerased.clear();
val=(*it1).first;
tobeerased.push_back((*it1).second.first);
tobeerased.push_back((*it1).second.second);
}else{
tobeerased.push_back((*it1).second.first);
tobeerased.push_back((*it1).second.second);
}
}
it1++;
}
for(int neznamvise=0;neznamvise<tobeerased.size();neznamvise++){
gone[tobeerased[neznamvise]]=true;
}
tobeerased.clear();
for(int i=0;i<n;i++){
if(!gone[i]){
cout<<i+1<<" ";
}
}
cout<<'\n';
}
signed main(){
solve();
}
컴파일 시 표준 에러 (stderr) 메시지
Main.cpp: In function 'void solve()':
Main.cpp:88:19: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
88 | if(val=-1){
| ~~~^~~
Main.cpp:93:48: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
93 | for(int neznamvise=0;neznamvise<tobeerased.size();neznamvise++){
| ~~~~~~~~~~^~~~~~~~~~~~~~~~~~
Main.cpp:107:36: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
107 | for(int neznamvise=0;neznamvise<tobeerased.size();neznamvise++){
| ~~~~~~~~~~^~~~~~~~~~~~~~~~~~
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