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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#19128 | #1877. Matryoshka Dolls | Peanut_Tang | TL | 1ms | 7836kb | C++14 | 1.7kb | 2022-01-28 11:30:10 | 2022-05-06 04:18:05 |
Judging History
answer
#include <bits/stdc++.h>
#define il inline
#define ll long long
#define pb push_back
const int N=50005,B=120;
namespace IO
{
const int S=1<<20|500; char I[S+5],*s,*t,O[S+5],*o; int p[40],P;
il char Gc(){if (t==s){t=(s=I)+fread(I,1,1<<20,stdin); if (t==s) return EOF;} return *s++;}
template<class T> il void Read(T &x)
{
char c; while ((c=Gc())<48||c>57); x=c^48;
while ((c=Gc())>47&&c<58) x=(x<<3)+(x<<1)+(c^48);
}
il void Fs(){if (o-O) fwrite(O,1,o-O,stdout); o=O;}
il void Pc(char c){if (*o++=c,o-O==S) Fs();}
template<class T> il void Print(T x){T y; do y=x/10,p[P++]=x-10*y;while (x=y); while (P) Pc(p[--P]^48);}
struct F{F(){o=O;} ~F(){Fs();}}FF;
}
using IO::Read; using IO::Print; using IO::Pc;
int n,m,a[N],b[N],st[N],tp,L[N],R[N]; ll E,ans[N]; struct node{int l,r,o;}; std::vector<node> g[N];
il int Dis(int x,int y){return !x||x>n||!y||y>n?0:std::abs(b[x]-b[y]);}
il void Del(int x){st[++tp]=x,E+=Dis(L[x],R[x])-Dis(x,L[x])-Dis(x,R[x]),L[R[x]]=L[x],R[L[x]]=R[x];}
il void Undo(){int x=st[tp--]; E+=Dis(x,L[x])+Dis(x,R[x])-Dis(L[x],R[x]),L[R[x]]=x,R[L[x]]=x;}
int main()
{
Read(n),Read(m); int i,j,l,r;
for (i=1; i<=n; i++) Read(a[i]),b[a[i]]=i;
for (i=1; i<=m; i++) Read(l),Read(r),g[(l-1)/B+1].pb({l,r,i});
for (j=1; j<=n; j+=B)
{
std::vector<node> &h=g[(j-1)/B+1]; std::sort(h.begin(),h.end(),[](const node &a,const node &b){return a.r==b.r?(a.l==b.l?a.o<b.o:a.l<b.l):a.r>b.r;});
for (i=j,E=tp=0; i<=n; i++) L[i]=i-1,R[i]=i+1,E+=Dis(i,R[i]); L[j]=0;
l=j,r=n; for (node v:h)
{
for ( ; r>v.r; r--) Del(a[r]);
for ( ; l<v.l; l++) Del(a[l]);
for (ans[v.o]=E; l>j; l--) Undo();
}
}
for (i=1; i<=m; i++) Print(ans[i]),Pc('\n');
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 7836kb
input:
5 5 1 5 2 4 3 1 5 1 4 1 3 1 2 1 1
output:
7 5 3 1 0
result:
ok 5 number(s): "7 5 3 1 0"
Test #2:
score: 0
Accepted
time: 0ms
memory: 6284kb
input:
1 1 1 1 1
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: -100
Time Limit Exceeded
input:
100000 1 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 138 140 142 144 146 148 150 152 154 156 158 160 162 164 166 168 170 172 ...