Submission #944982

#	Time	Username	Problem	Language	Result	Execution time	Memory
944982		hmm789	Chameleon's Love (JOI20_chameleon)	C++14	Compilation error	0 ms	0 KiB

chameleon

#include <bits/stdc++.h>
using namespace std;

int fw[505];

void update(int x, int v) {
	for(x++; x < 505; x += x&-x) fw[x] += v;
}
int query(int x) {
	int ans = 0;
	for(x++; x; x -= x&-x) ans += fw[x];
	return ans;
}

void Solve(int N) {
	for(int i = 0; i < N; i++) {
		int l = 1, r = 2*N, m;
		while(l < r) {
			m = (l+r)/2;
			vector<int> v;
			for(int j = 1; j <= m; j++) v.push_back(j);
			int q = Query(v);
			if(q >= m-query(m)) l = m+1;
			else r = m;
		}
		int second = l, first = -1;
		for(int j = 1; j < second; j++) {
			vector<int> v;
			v.push_back(j); v.push_back(second);
			if(Query(v) == 1) {
				first = j; break;
			}
		}
		update(second, 1);
		Answer(first, second);
	}
}

Compilation message (stderr)

chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:22:12: error: 'Query' was not declared in this scope; did you mean 'query'?
   22 |    int q = Query(v);
      |            ^~~~~
      |            query
chameleon.cpp:30:7: error: 'Query' was not declared in this scope; did you mean 'query'?
   30 |    if(Query(v) == 1) {
      |       ^~~~~
      |       query
chameleon.cpp:35:3: error: 'Answer' was not declared in this scope
   35 |   Answer(first, second);
      |   ^~~~~~