OJ-Problems-Source/HDOJ/5042_autoAC.cpp

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#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<algorithm>
#include<map>
#include<queue>
#include<stack>
#include<set>
#include<cmath>
#include<vector>
#include<bitset>
#define inf 0x3f3f3f3f
#define Inf 0x3FFFFFFFFFFFFFFFLL
#define eps 1e-6
#define pi acos(-1.0)
using namespace std;
typedef long long ll;
const int maxn = 100000 + 10;
struct Node
{
int pos,l,r,gval;
Node(int pos = 0,int l = 0,int r = 0,int gval = 0):pos(pos),l(l),r(r),gval(gval){}
bool operator < (const Node & a) const
{
if(gval != a.gval) return gval < a.gval;
if(pos != a.pos) return pos < a.pos;
return r < a.r;
}
}node[maxn*20];
ll sum[maxn*20];
int cnt[maxn*20];
int a[maxn],pa[maxn],pre[maxn],val[maxn],n,tot;
int gcd(int a,int b) { return b == 0?a:gcd(b,a%b);}
vector<Node>vt[maxn];
void precal()
{
for(int i = 0;i <= n;++i) vt[i].clear();
vt[n].push_back(Node(n,n,n,a[n]));
Node ntmp;
int x;
for(int i = n - 1;i >= 1;--i)
{
int size = vt[i + 1].size();
int cnt = 1;
vt[i].push_back(Node(i,i,i,a[i]));
for(int j = 0;j < size;++j)
{
ntmp = vt[i+1][j];
x = gcd(a[i],ntmp.gval);
if(cnt && vt[i][cnt-1].gval == x)
vt[i][cnt - 1].r = ntmp.r;
else
vt[i].push_back(Node(i,ntmp.l,ntmp.r,x)),cnt++;
}
}
tot = 0;
for(int i = 1;i <= n;++i)
for(int j = 0;j < (int)vt[i].size();++j)
node[++tot] = Node(vt[i][j]);
sort(node + 1,node + tot + 1);
sum[0] = 0;
for(int i = 1;i <= tot;++i)
sum[i] = sum[i-1] + node[i].r - node[i].l + 1;
cnt[1] = 1;
for(int i = 2;i <= tot;++i)
cnt[i] = cnt[i-1] + (node[i].gval != node[i-1].gval);
}
int f(int l,int r)
{
int L = 0,R = vt[l].size() - 1;
while(L < R)
{
int m = (L + R)>>1;
// cout<<vt[l][m].r<<endl;
if(vt[l][m].r < r)
L = m + 1;
else
R = m;
}
return vt[l][L].gval;
}
int main()
{
char str[20];
int t,tcase = 0,Q;
scanf("%d",&t);
while(t--)
{
scanf("%d%d",&n,&Q);
for(int i = 1;i <= n;++i)
scanf("%d",&a[i]);
precal();
ll x,y,ans1,ans2;
Node tmp;
printf("Case #%d:\n",++tcase);
while(Q--)
{
scanf("%s",str);
scanf("%I64d%I64d",&x,&y);
if(str[0] == 'S')
{
if(cnt[tot] < x)
{
puts("-1");
continue;
}
int L = lower_bound(cnt + 1,cnt + tot + 1,x) - cnt;
int R = upper_bound(cnt + 1,cnt + tot + 1,x) - cnt - 1;
if(sum[R] - sum[L - 1] < y)
{
puts("-1");
continue;
}
int pos = lower_bound(sum + L,sum + R + 1,y + sum[L-1]) - sum;
ll tx = sum[pos] - sum[L - 1] - y;
ans1 = node[pos].pos;
ans2 = node[pos].r - tx;
printf("%I64d %I64d\n",ans1,ans2);
}
else
{
int val = f(x,y),p1,p2;
tmp = Node(-inf,0,0,val);
p1 = lower_bound(node + 1,node + tot + 1,tmp) - (node );
ans1 = cnt[p1];
tmp = Node(x,x,y,val);
p2 = lower_bound(node + p1,node + tot + 1,tmp) - node;
ans2 = sum[p2 - 1] - sum[p1 - 1] + y - node[p2].l + 1;
printf("%I64d %I64d\n",ans1,ans2);
}
}
}
return 0;
}