Submission #253406

#	Time	Username	Problem	Language	Result	Execution time	Memory
253406		ChrisT	Carnival (CEOI14_carnival)	C++17	100 / 100	10 ms	384 KiB

carnival

#include<bits/stdc++.h>
using namespace std;
vector<vector<int>> ret;
int getpos (int i, int l, int r) {
	if (l == r) return l;
	int mid = (l + r) / 2;
	printf ("%d ",mid-l+2);
	for (int j = l; j <= mid; j++) printf ("%d ",ret[j].back());
	printf ("%d\n",i);
	fflush(stdout);
	int go; scanf ("%d",&go);
	if (go == mid - l + 1) return getpos(i,l,mid);
	else return getpos(i,mid+1,r);
}
int main () {
	int n;
	scanf ("%d",&n);
	ret = {{1}};
	for (int i = 2; i <= n; i++) {
		printf ("%d ",i);
		for (int j = 1; j <= i; j++) printf("%d%c",j," \n"[j==i]);
		fflush(stdout);
		int new_cnt; scanf ("%d",&new_cnt);
		if (new_cnt > (int)ret.size()) ret.push_back({i});
		else ret[getpos(i,0,(int)ret.size()-1)].push_back(i);
	}
	vector<int> ans(n+1);
	for (int i = 0; i < (int)ret.size(); i++) {
		for (int j : ret[i]) ans[j] = i+1;
	}
	printf ("0 ");
	for (int i = 1; i <= n; i++) printf ("%d%c",ans[i]," \n"[i==n]);
	return 0;
}

Compilation message (stderr)

carnival.cpp: In function 'int getpos(int, int, int)':
carnival.cpp:11:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int go; scanf ("%d",&go);
          ~~~~~~^~~~~~~~~~
carnival.cpp: In function 'int main()':
carnival.cpp:17:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d",&n);
  ~~~~~~^~~~~~~~~
carnival.cpp:23:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int new_cnt; scanf ("%d",&new_cnt);
                ~~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20