Submission #110706

#	Time	Username	Problem	Language	Result	Execution time	Memory
110706		ckodser	Cake (CEOI14_cake)	C++14	0 / 100	2065 ms	2684 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=12;


ll p[maxn];
ll n,a;
vector<pii> best;

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++){
	ans=max(ans,p[i]);
    }
    return ans;
}
ll find_first_high(ll x,ll f){
    for(ll i=a;;i+=f){
	if(p[i]>x)return i;
    }
    return 0;
}
void update(ll pos,ll v){
    p[pos]=best[best.size()-v].F+1;
    bool bod=0;
    for(ll i=best.size()-v+1;i<best.size();i++){
	if(best[i].S!=pos){
	    p[best[i].S]++;
	    best[i].F++;
	}else{
	    bod=1;
	    best[i].F=p[pos];
	}
    }
    if(!bod){
	best.pb(mp(p[pos],pos));
    }
    sort(best.begin(),best.end());
    if(best.size()>sq){
	reverse(best.begin(),best.end());
	best.pop_back();
	reverse(best.begin(),best.end());
    }
}


int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin>>n>>a;
    p[0]=inf;
    p[n+1]=inf;
    for(ll i=1;i<=n;i++){
	cin>>p[i];
	if(p[i]>=n-sq){
	    best.pb(mp(p[i],i));
	}
    }	
    sort(best.begin(),best.end());
    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(e==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 p,v;
	    cin>>p>>v;
	    update(p,v);
	}
    }

}

Compilation message (stderr)

cake.cpp: In function 'void update(long long int, long long int)':
cake.cpp:44:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(ll i=best.size()-v+1;i<best.size();i++){
                              ~^~~~~~~~~~~~

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