Submission #516981

#	Time	Username	Problem	Language	Result	Execution time	Memory
516981		sudheerays123	Pancake (NOI12_pancake)	C++98	12 / 25	5 ms	324 KiB

pancake

#include <bits/stdc++.h>
using namespace std;
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define ll long long int
#define tc ll test;cin >> test;while(test--)
#define vi vector<ll>
#define pll pair<ll,ll>
#define pb push_back
#define mp make_pair
#define INF 1e18
#define MOD 1000000007
#define ff first
#define ss second
#define in >>
#define out <<
#define space << " " <<
#define spacef << " "
#define fo(i,a,b) for(ll i = a; i <= b; i++)
#define nextline out "\n"
#define print(x) for(auto i : x ) cout out i spacef
#define mmax(x,i) x = max(x,i)
#define mmin(x,i) x = min(x,i)
#define N 105

ll n;
ll sum = 0;

void go(ll i , vi a){

	if(i == n) return;

	ll maxv = -INF , maxp;

	fo(j,i,n){
		if(a[j] > maxv){
			maxv = a[j];
			maxp = j;
		}
	}
	
	if(maxp == i){
		go(i+1,a);
	}
	else if(maxp == n){
		sum++;

		reverse(a.begin()+i,a.begin()+n+1);

		go(i+1,a);
	}
	else{
		sum += 2;

		reverse(a.begin()+maxp,a.begin()+n+1);
		reverse(a.begin()+i,a.begin()+n+1);

		go(i+1,a);		
	}
}

int main() {
    
    fast;
	
	tc{
		cin in n;

		vi a(n+5);
		fo(i,1,n) cin in a[i];

		sum = 0;

		go(1,a);
		
		cout out sum nextline;
	}

    return 0;
}

Compilation message (stderr)

pancake.cpp: In function 'void go(long long int, std::vector<long long int>)':
pancake.cpp:44:7: warning: 'maxp' may be used uninitialized in this function [-Wmaybe-uninitialized]
   44 |  else if(maxp == n){
      |       ^~

• Subtask 1: 4 / 4
• Subtask 2: 4 / 4
• Subtask 3: 4 / 4
• Subtask 4: 0 / 8
• Subtask 5: 0 / 5