Submission #784158

#	Time	Username	Problem	Language	Result	Execution time	Memory
784158		jnjwnwnw	Carnival (CEOI14_carnival)	C++11	100 / 100	22 ms	316 KiB

carnival

#include <iostream>
#include <algorithm>
#include <string>
#include <set>
using namespace std;

void setIO(string s) {
	freopen((s + ".in").c_str(), "r", stdin);
	freopen((s + ".out").c_str(), "w", stdout);
}
#define MAXN 151

int n;
set<int> groups[MAXN];
int ans[MAXN];

int main(){
    cin >> n;
	int group = 0;
	int prev = 0;
	for(int i = 1; i <= n; i++){
		cout << i;
		for(int j = 1; j <= i; j++){
			cout << " " << j; 
		}
		cout << endl;
		int cur;
		cin >> cur;
		if (cur != prev){
			groups[group++].insert(i);
		}
		prev = cur;
	}

	int numGroups = group;
	group = 0;
	int temp;
	for(int i = 1; i <= n; i++){
		if (groups[group].find(i) != groups[group].end()){
			// already has, so next group
			group++;
		}else{
			// need to find a group to keep this in;
			for(int j = 0; j < group; j++){
				cout << 2 <<  " " << (*groups[j].upper_bound(0)) << " " << i << endl;
				cin >> temp;
				if (temp == 1){
					// found our spot
					groups[j].insert(i);
					break;
				}
			}
		}
	}

	for(int i = 0; i < numGroups; i++){
		for(int j: groups[i]){
			ans[j] = i+1;
		}
	}
	cout << 0;
	for(int i = 1; i <= n; i++){
		cout << " " << ans[i];
	}
	cout << endl;

	
}

Compilation message (stderr)

carnival.cpp: In function 'void setIO(std::string)':
carnival.cpp:8:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |  freopen((s + ".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
carnival.cpp:9:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  freopen((s + ".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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