Submission #110711

#	Time	Username	Problem	Language	Result	Execution time	Memory
110711		ckodser	Cake (CEOI14_cake)	C++14	15 / 100	2076 ms	2872 KiB

cake

#include<bits/stdc++.h>

#define ll long long
#define pb push_back
#define mp make_pair
#define ld long double
#define F first
#define S second
#define pii pair<ll,ll> 

using namespace :: std;

const ll mod=1e9+7;
const ll maxn=5e5+500;
const ll inf=1e9+900;
const ll sq=10;


ll p[maxn];
ll n,a;

ll find_max(ll e){
    ll l=e;
    ll r=a;
    if(r<l){
	swap(l,r);
    }
    ll ans=0;
    for(ll i=l;i<=r;i++){
	if(i!=a){
	    ans=max(ans,p[i]);
	}
    }
    return ans;
}
ll find_first_high(ll x,ll f){
    for(ll i=a+f;;i+=f){
	if(p[i]>x)return i;
    }
    return 0;
}
void update(ll a,ll b){
    for(ll i=1;i<=n;i++){
	if(p[i]==a){
	    p[i]=b;
	}
	else if(a<p[i] && p[i]<=b){
	    p[i]--;
	}
    }
}


int main(){
    cin>>n>>a;
    p[0]=n+1;
    p[n+1]=n+2;
    for(ll i=1;i<=n;i++){
	cin>>p[i];
    }	
    ll q;
    cin>>q;
    for(ll i=0;i<q;i++){
	char c;
	cin>>c;
	if(c=='F'){
	    ll e;
	    cin>>e;
	    ll mi=find_max(e);
	    ll o;
	    if(o==a){
		cout<<0<<endl;
		continue;
	    }	
	    if(e<a){
		o=find_first_high(mi,1);
	    }else{
		o=find_first_high(mi,-1);
	    }
	    cout<<abs(o-e)-1<<endl;
	}else{
	    ll x,v;
	    cin>>x>>v;
	    update(p[x],n-v+1);
	}
    }

}

Compilation message (stderr)

cake.cpp: In function 'int main()':
cake.cpp:71:6: warning: 'o' may be used uninitialized in this function [-Wmaybe-uninitialized]
      if(o==a){
      ^~

• Subtask 1: 15 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50