Submission #606314

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
606314	2022-07-26 06:09:01	krit3379	Fancy Fence (CEOI20_fancyfence)	C++17	100 / 100	56 ms	12524 KiB

fancyfence

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#include<bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#define N 100005
int n;
long long t[4*N],mi[4*N],h[N],w[N],qs[N],m,pos,mod=1e9+7,ans;
void cre(int x,int l,int r){
    if(l==r){t[x]=l,mi[x]=h[l];return ;}
    int mid=(l+r)/2;
    cre(x*2,l,mid);
    cre(x*2+1,mid+1,r);
    if(mi[x*2]<mi[x*2+1])t[x]=t[x*2];
    else t[x]=t[x*2+1];
    mi[x]=min(mi[x*2],mi[x*2+1]);
}
void query(int x,int l,int r,int ll,int rr){
    if(l>rr||ll>r||ll>rr)return ;
    if(ll<=l&&r<=rr){
        if(mi[x]<m)m=mi[x],pos=t[x];
        return ;
    }
    int mid=(l+r)/2;
    query(x*2,l,mid,ll,rr);
    query(x*2+1,mid+1,r,ll,rr);
}
 
 
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Compilation message (stderr)

fancyfence.cpp: In function 'int main()':
fancyfence.cpp:46:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
fancyfence.cpp:47:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |     for(i=1;i<=n;i++)scanf("%lld",&h[i]);
      |                      ~~~~~^~~~~~~~~~~~~~
fancyfence.cpp:48:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |     for(i=1;i<=n;i++)scanf("%lld",&w[i]),qs[i]=w[i]+qs[i-1];
      |                      ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 0
• Subtask 2: 12 / 12
• Subtask 3: 13 / 13
• Subtask 4: 15 / 15
• Subtask 5: 15 / 15
• Subtask 6: 18 / 18
• Subtask 7: 27 / 27