Submission #105020

#	Time	Username	Problem	Language	Result	Execution time	Memory
105020		bert30702	Simurgh (IOI17_simurgh)	C++17	Compilation error	0 ms	0 KiB

simurgh

#include <bits/stdc++.h>
#define pii pair<int, int>
#define F first
#define S second
using namespace std;
vector<int> ans;
//int count_common_roads(vector<int> v) {
//	for(auto it: v) cout << it << ' '; cout << endl;
//	int a; cin >> a; return a;
//}
int dfs(int l, int r) {
	vector<int> que;
	for(int i = l; i <= r; i ++) que.push_back(i);
	int v = count_common_roads(que);
	if(!v) return 0;
	if(v == r - l + 1) return ans.insert(ans.end(), que.begin(), que.end()), v;
	int m = l + r >> 1;
	int k = dfs(l, m);
	if(k != v) dfs(m + 1, r);
}
vector<int> find_roads(int n, vector<int> u, vector<int> v) {
	dfs(0, u.size() - 1);	
	return ans;
}
//main () {
//	vector<int> ans = find_roads(4, {0, 0, 0, 1, 1, 2}, {1, 2, 3, 2, 3, 3});
//	for(auto it: ans) cout << it << ' '; cout << endl;
//}

Compilation message (stderr)

simurgh.cpp: In function 'int dfs(int, int)':
simurgh.cpp:14:10: error: 'count_common_roads' was not declared in this scope
  int v = count_common_roads(que);
          ^~~~~~~~~~~~~~~~~~
simurgh.cpp:17:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m = l + r >> 1;
          ~~^~~
simurgh.cpp:20:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^