Submission #436709

#	Time	Username	Problem	Language	Result	Execution time	Memory
436709		shrimb	Fountain Parks (IOI21_parks)	C++17	Compilation error	0 ms	0 KiB

parks

#include"bits/stdc++.h"
// #include"grader.cpp"
// #define int long long
#define endl '\n'
using namespace std;
// void build(vector<int> u, vector<int> v, vector<int> a, vector<int> b);
int construct_roads(std::vector<int> x, std::vector<int> y) {
	int n = x.size();
	vector<pair<int,int>> v;
	for (int i = 0 ; i < n ; i++) v.emplace_back(y[i], i);
	sort(v.begin(), v.end());
	for (int i = 1 ; i < n ; i++) {
		if (v[i].first != v[i-1].first + 2) return 0;
	}
	vector<int> u, vv, a, b;
	for (int i = 1 ; i < n ; i++) {
		u.push_back(v[i-1].second);
		vv.push_back(v[i].second);
		a.push_back(x[0] + 1);
		b.push_back(v[i-1].first + 1);
	}
	build(u, vv, a, b);
	return 1;
}

Compilation message (stderr)

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:22:2: error: 'build' was not declared in this scope
   22 |  build(u, vv, a, b);
      |  ^~~~~