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Re:线段树→_→ C++ AC,G++ TLE。请问一下哪儿有问题。In Reply To:线段树→_→ C++ AC,G++ TLE。请问一下哪儿有问题。 Posted by:dongshimou at 2015-01-27 15:09:43 > #include<cstdio> > #include<cstring> > #include<string> > #include<queue> > #include<algorithm> > #include<map> > #include<stack> > #include<iostream> > #include<list> > #include<set> > #include<bitset> > #include<vector> > #include<cmath> > > #define INF 0x7fffffff > #define eps 1e-8 > #define LL long long > #define PI 3.141592654 > #define CLR(a,b) memset(a,b,sizeof(a)) > #define FOR(i,a,b) for(int i=a;i<b;i++) > #define FOR_(i,a,b) for(int i=a;i>=b;i--) > #define sf scanf > #define pf printf > #define all(v) (v).begin(),(v).end() > #define acfun std::ios::sync_with_stdio(false) > > #define SIZE (1000000 +1) > #define MOD 1000000007 > using namespace std; > int arr[SIZE*3]; > int _max[SIZE*3]; > int _min[SIZE*3]; > void build(int l,int r,int o) > { > if(l==r) > { > _max[o]=arr[l]; > _min[o]=arr[l]; > } > else > { > int m=(l+r)>>1;; > build(l,m,o*2); > build(m+1,r,o*2+1); > _max[o]=max(_max[o*2],_max[o*2+1]); > _min[o]=min(_min[o*2],_min[o*2+1]); > } > } > int ql,qr; > int minans,maxans; > void query(int l,int r,int o) > { > if(ql<=l&&qr>=r) > { > minans=min(minans,_min[o]); > maxans=max(maxans,_max[o]); > } > else > { > int m=(l+r)>>1; > if(ql<=m)query(l,m,o*2); > if(qr>m)query(m+1,r,o*2+1); > } > } > int resmax[SIZE]; > int resmin[SIZE]; > int main() > { > int n,m; > while(~sf("%d%d",&n,&m)) > { > FOR(i,1,n+1) > sf("%d",&arr[i]); > build(1,n,1); > > FOR(i,1,n-m+2) > { > minans=INF,maxans=-INF; > ql=i,qr=i+m-1; > //pf("%d -- %d\n",ql,qr); > query(1,n,1); > resmax[i]=maxans; > resmin[i]=minans; > } > FOR(i,1,n-m+1) > pf("%d ",resmin[i]); > pf("%d\n",resmin[n-m+1]); > FOR(i,1,n-m+1) > pf("%d ",resmax[i]); > pf("%d\n",resmax[n-m+1]); > } > } Followed by: Post your reply here: |
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