Submission #43418

#	Time	Username	Problem	Language	Result	Execution time	Memory
43418		Hassoony	Cake (CEOI14_cake)	C++14	0 / 100	1093 ms	5576 KiB

cake

#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
const int MX=250090;
int n,Q,st,a[MX],seg[MX*5],x,y;
vector<int>v;
string s;
char oo[MX];
void build(int node,int l,int r){
    if(l==r){
        seg[node]=a[l];
        return;
    }
    int mid=(l+r)/2;
    build(node*2,l,mid);
    build(node*2+1,mid+1,r);
    seg[node]=max(seg[node*2],seg[node*2+1]);
}
bool cmp(int x,int y){
    return a[x]>a[y];
}
void up(int node,int l,int r,int ind){
    if(l>ind||r<ind)return;
    if(l==r){
        seg[node]=a[l];
        return;
    }
    int mid=(l+r)/2;
    up(node*2,l,mid,ind);
    up(node*2+1,mid+1,r,ind);
    seg[node]=max(seg[node*2],seg[node*2+1]);
}
int q(int node,int l,int r,int s,int e){
    if(l>e||r<s)return 0;
    if(l>=s&&r<=e)return seg[node];
    int mid=(l+r)/2;
    return max(q(node*2,l,mid,s,e),q(node*2+1,mid+1,r,s,e));
}
int q1(int node,int l,int r,int ind,int mn){
    if(r<ind)return 0;
    if(l==r){
        if(a[l]>mn)return l;
        return 0;
    }
    int mid=(l+r)/2;
    if(mid<ind)return q1(node*2+1,mid+1,r,ind,mn);
    if(seg[node*2]<=mn)return q1(node*2+1,mid+1,r,ind,mn);
    else return q1(node*2,l,mid,ind,mn);
}
int q2(int node,int l,int r,int ind,int mn){
    if(l>ind)return 0;
    if(l==r){
        if(a[l]>mn)return l;
        return 0;
    }
    int mid=(l+r)/2;
    if(mid+1>ind)return q2(node*2,l,mid,ind,mn);
    if(seg[node*2+1]<=mn)return q2(node*2,l,mid,ind,mn);
    else return q2(node*2+1,mid+1,r,ind,mn);
}
int main(){
    scanf("%d%d",&n,&st);
    for(int i=1;i<=n;i++){
        scanf("%d",&a[i]);
        if(a[i]>n-10)v.push_back(i);
    }
    sort(v.begin(),v.end(),cmp);
    build(1,1,n);
    scanf("%d",&Q);
    while(Q--){
        scanf("%s",&oo);s=oo;
        if(s=="E"){
            scanf("%d%d",&x,&y);
            int idx=-1;
            for(int i=0;i<10;i++){
                if(v[i]==x)idx=i;
            }
            if(idx==y)continue;
        //    cout<<idx<<" "<<v[y-1]<<endl;
            if(idx<y){
                a[x]=a[v[y-1]];
                up(1,1,n,x);
                for(int i=y-1;i<v.size();i++){
                    if(v[i]==x)continue;
                    a[v[i]]++;
                    up(1,1,n,v[i]);
                }
            }
            else {
                a[x]=a[v[y-1]]+1;
                up(1,1,n,x);
                for(int i=0;i<y-1;i++){
                    if(v[i]==x)continue;
                    a[v[i]]++;
                    up(1,1,n,v[i]);
                }
            }
            int ok=0;
            for(auto pp:v)if(pp==x)ok=1;
            if(!ok)v.pop_back(),v.push_back(x);
            sort(v.begin(),v.end(),cmp);
    //        for(int i=1;i<=n;i++)cout<<a[i]<<" ";
      //      cout<<endl;
        }
        else{
            scanf("%d",&x);
            if(x==st){
                puts("0");
                continue;
            }
            if(x<st){
                int mn=q(1,1,n,x,st-1);
                int ans=q1(1,1,n,st,mn);
                int res=ans-x-1;
        //        cout<<ans<<endl;
                if(ans==0)res=n-x;
                else if(ans<=st)res=st-x;
                cout<<res<<endl;
            }
            else{
                int mn=q(1,1,n,st+1,x);
                int ans=q2(1,1,n,st,mn);
                int res=x-ans-1;
      //          cout<<ans<<endl;
                if(ans==0)res=x-1;
                else if(ans>=st)res=x-st;
                cout<<res<<endl;
            }
        }
    }
}

Compilation message (stderr)

cake.cpp: In function 'int main()':
cake.cpp:72:23: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[250090]' [-Wformat=]
         scanf("%s",&oo);s=oo;
                       ^
cake.cpp:84:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for(int i=y-1;i<v.size();i++){
                                ^
cake.cpp:63:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&st);
                         ^
cake.cpp:65:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&a[i]);
                          ^
cake.cpp:70:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&Q);
                   ^
cake.cpp:72:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s",&oo);s=oo;
                        ^
cake.cpp:74:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d%d",&x,&y);
                                ^
cake.cpp:107:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&x);
                           ^

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