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Re:RMQIn Reply To:Re:RMQ Posted by:nuciedh at 2007-07-13 21:08:44 别人程序就不贴了...我按她的意思写了一个: #include<iostream> #include<algorithm> using namespace std; struct MM { int v,id; }a[50002]; int b[50002]; bool com(MM p,MM q) { return p.v<q.v; } int main() { int n,m,i,j,k,st,end; while(scanf("%d %d",&n,&m)==2) { for(i=0;i<n;i++) { scanf("%d",&b[i+1]); a[i].v=b[i+1]; a[i].id=i+1; } sort(&a[0],&a[n],com); for(i=0;i<m;i++) { scanf("%d %d",&st,&end); if(end-st<50) { int maxm=b[st]; int minm=b[st]; for(j=st;j<=end;j++) { if(maxm<b[j]) maxm=b[j]; if(minm>b[j]) minm=b[j]; } printf("%d\n",maxm-minm); continue; } for(j=0;j<n;j++) if(a[j].id>=st&&a[j].id<=end) break; for(k=n-1;k>=0;k--) if(a[k].id>=st&&a[k].id<=end) break; printf("%d\n",a[k].v-a[j].v); } } return 0; } Followed by:
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