Submission #337841

#	Time	Username	Problem	Language	Result	Execution time	Memory
337841		tengiz05	Odd-even (IZhO11_oddeven)	C++17	0 / 100	270 ms	262148 KiB

oddeven

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define FASTIO ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define pii pair<int, int>
#define ff first
#define ss second
#define PI acos(-1)
#define ld long double
template <class T> bool ckmin(T& a, const T& b) {return a > b ? a = b, true : false;}
template <class T> bool ckmax(T& a, const T& b) {return a < b ? a = b, true : false;}
const int mod = 1e9+7, N = 2e5+5;
int msb(int val){return sizeof(int)*8-__builtin_clzll(val);}
int a[N], n, m, k;

void solve(int test_case){
	int i, j;
	cin >> n;
	vector<int> v;
	int now = 1;
	int c=0, dest=1;
	bool ch = false;
	for(i=0;v.size() < n;i++){
		if(ch && now%2==1)now--;
		else if(now > 1)now--;
		while(c < dest)c++,v.pb(now), now+=2;
		c=0;
		dest++;
		if(v.back()%2==1)ch = true;
	}
//	for(auto x : v)cout << x << ' ';
	cout << v[n-1] << '\n';
	return;
}

signed main(){
	FASTIO;
#define MULTITEST 0
#if MULTITEST
	int _T;
	cin >> _T;
	for(int T_CASE = 1; T_CASE <= _T; T_CASE++)
		solve(T_CASE);
#else
	solve(1);
#endif
	return 0;
}

Compilation message (stderr)

oddeven.cpp: In function 'void solve(long long int)':
oddeven.cpp:25:19: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   25 |  for(i=0;v.size() < n;i++){
      |          ~~~~~~~~~^~~
oddeven.cpp:19:9: warning: unused variable 'j' [-Wunused-variable]
   19 |  int i, j;
      |         ^

• Subtask 1: 0 / 100