Created
April 22, 2020 19:46
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#include <bits/stdc++.h> | |
using namespace std; | |
int arr[100005],node[400005]; | |
void init(int i,int j,int n) | |
{ | |
if(i==j) | |
{ | |
node[n]=arr[i]; | |
return; | |
} | |
int mid=(i+j)/2; | |
init(i,mid,2*n); | |
init(mid+1,j,2*n+1); | |
node[n]=min(node[2*n],node[2*n+1]); | |
} | |
int query(int i,int j,int s,int e,int n) | |
{ | |
if(i>e || j<s) | |
return INT_MAX; | |
if(i>=s && j<=e) | |
return node[n]; | |
int mid = (i+j)/2; | |
int re= min(query(i,mid,s,e,2*n),query(mid+1,j,s,e,2*n+1)); | |
return re; | |
} | |
int main() { | |
int i,j,n,k,l,t,c=1; | |
scanf("%d",&t); | |
while(c<=t) | |
{ | |
printf("Case %d:\n",c++); | |
scanf("%d %d",&n,&k); | |
for(i=1;i<=n;i++) | |
{ | |
scanf("%d",&arr[i]); | |
} | |
init(1,n,1); | |
for(i=0;i<k;i++) | |
{ | |
scanf("%d %d",&j,&l); | |
printf("%d\n",query(1,n,j,l,1)); | |
//cout<<query(1,n,j,l,1)<<endl; | |
} | |
memset(arr,0,sizeof(arr)); | |
memset(node,0,sizeof(node)); | |
} | |
return 0; | |
} |
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