Submission #451307

#	Time	Username	Problem	Language	Result	Execution time	Memory
451307		kingfran1907	Carnival (CEOI14_carnival)	C++14	100 / 100	20 ms	312 KiB

carnival

#include <bits/stdc++.h>
#define X first
#define Y second
 
using namespace std;
typedef long long llint;
 
const int maxn = 2e5+10;
const int base = 31337;
const int mod = 1e9+7;
const int inf = 0x3f3f3f3f;
const int logo = 18;
const int off = 1 << logo;
const int treesiz = off << 1;

int n;
int niz[maxn];
int sol[maxn];

int query(vector< int > v) {
	printf("%d ", v.size());
	for (int tren : v) printf("%d ", tren);
	printf("\n");
	
	fflush(stdout);
	int x;
	scanf("%d", &x);
	return x;
}

int main() {
	scanf("%d", &n);
	
	vector< int > v;
	v.push_back(1);
	sol[1] = 1;
	
	for (int i = 2; i <= n; i++) {
		int lo = 0;
		int hi = v.size();
		while (lo < hi) {
			int mid = (lo + hi + 1) / 2;
			
			vector< int > tren;
			for (int j = 0; j < mid; j++) 
				tren.push_back(v[j]);
			tren.push_back(i);
			
			int out = query(tren);
			if (out == tren.size()) lo = mid;
			else hi = mid - 1;
		}
		
		if (lo == v.size()) {
			v.push_back(i);
			sol[i] = v.size();
		} else sol[i] = sol[v[lo]];
	}
	
	printf("0 ");
	for (int i = 1; i <= n; i++) printf("%d ", sol[i]);
	printf("\n");
	fflush(stdout);
	return 0;
}

Compilation message (stderr)

carnival.cpp: In function 'int query(std::vector<int>)':
carnival.cpp:21:11: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
   21 |  printf("%d ", v.size());
      |          ~^    ~~~~~~~~
      |           |          |
      |           int        std::vector<int>::size_type {aka long unsigned int}
      |          %ld
carnival.cpp: In function 'int main()':
carnival.cpp:50:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |    if (out == tren.size()) lo = mid;
      |        ~~~~^~~~~~~~~~~~~~
carnival.cpp:54:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |   if (lo == v.size()) {
      |       ~~~^~~~~~~~~~~
carnival.cpp: In function 'int query(std::vector<int>)':
carnival.cpp:27:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |  scanf("%d", &x);
      |  ~~~~~^~~~~~~~~~
carnival.cpp: In function 'int main()':
carnival.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~

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