This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
vector<string> all;
void generate(string s, int N){
    if (N == 0) {
        all.push_back(s);
    } else {
        generate(s+'1',N-1);
        generate(s+'0',N-1);
    }
}
/*
all_perms = []
def generate(s,N):
    if N == 0:
        all_perms.append(s)
    else:
        generate(s+'0',N-1)
        generate(s+'1',N-1)
N = int(input())
generate("",N)
print(all_perms)
*/
int main() {
    int N;
    cin >> N;  
    /*generate("",N);*/
    vector<pair<int,int>> cities;
    int maxX = -1;
    int maxY = -1;
    for (int i = 0; i < N; i++) {
        int xi;
        int yi;
        cin >> xi >> yi;
        maxX = max(xi,maxX);
        maxY = max(yi,maxY);
        cities.push_back(make_pair(xi,yi));
    }
    int coords[maxX][maxY];
    for (int i = 0; i < maxX; i++) {
        for (int j = 0; j < maxY; j++) {
            coords[i][j] = -1;
        }
    }
    for (int i = 0; i < N; i++) {
        pair<int,int> ci = cities[i];
        coords[ci.first-1][ci.second-1] = i;
    }
    bool ans[N];
    for (int i = 0; i < maxX; i++) {
        int start = -1;
        int end = -1;
        for (int j = 0; j < maxY; j++) {
            int curr = coords[i][j];
            if (curr) {
                if (start != -1) {
                    start = curr;
                }
                end = curr;
            }
            ans[curr] = true;
        }
    }
    for (int i = 0; i < N; i++) {
        cout << ans[i];
    }
    cout << endl;
}
Compilation message (stderr)
Main.cpp: In function 'int main()':
Main.cpp:66:13: warning: variable 'end' set but not used [-Wunused-but-set-variable]
   66 |         int end = -1;
      |             ^~~| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... |