#include <cstdio>
#include <cstdlib>
#include <algorithm>
int N;
int segt[2250000];
void add(int id,int lf,int rg,int plc) {
if(lf>plc||rg<plc) return;
if(lf==rg&&lf==plc) {
segt[id]=1;
return;
}
int hf=(lf+rg)/2;
add(id*2+1,lf,hf,plc);
add(id*2+2,hf+1,rg,plc);
segt[id]=segt[id*2+1]+segt[id*2+2];
}
int calc(int id,int lf,int rg,int callf,int calrg) {
if(lf>calrg||rg<callf) return 0;
if(callf<=lf&&calrg>=rg) return segt[id];
int hf=(lf+rg)/2;
return calc(id*2+1,lf,hf,callf,calrg)+calc(id*2+2,hf+1,rg,callf,calrg);
}
typedef struct {
int vl;
int plc;
}plts;
plts plt[300002];
/*
int cmp(const void *ka,const void *kb) {
plts *a=(plts *)ka;
plts *b=(plts *)kb;
if(a->vl!=b->vl) return b->vl-a->vl;
return a->plc-b->plc;
}*/
int cmp(const plts &a,const plts &b) {
if(a.vl!=b.vl) return a.vl > b.vl;
return a.plc < b.plc;
}
int getmin(int a,int b) {
if(a>b) return b;
return a;
}
int main() {
scanf("%d",&N);
for(int i=0;i<2250000;i++) segt[i]=0;
for(int i=0;i<N;i++) {
scanf("%d",&plt[i].vl);
plt[i].plc=i+1;
}
//qsort(plt,N,sizeof(plts),cmp);
std::sort(plt, plt+N, cmp);
long long sol=0;
int nw=0;
while(nw<N) {
int nvl=plt[nw].vl;
int nwb=nw;
while(nw<N) {
if(plt[nw].vl!=nvl) break;
sol+=getmin(calc(0,1,N,1,plt[nw].plc),calc(0,1,N,plt[nw].plc,N));
nw++;
}
while(nwb<nw) {
add(0,1,N,plt[nwb].plc);
nwb++;
}
}
printf("%lld\n",sol);
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
12220 KB |
Output is correct |
2 |
Correct |
4 ms |
12220 KB |
Output is correct |
3 |
Correct |
0 ms |
12220 KB |
Output is correct |
4 |
Correct |
0 ms |
12220 KB |
Output is correct |
5 |
Correct |
4 ms |
12220 KB |
Output is correct |
6 |
Correct |
0 ms |
12220 KB |
Output is correct |
7 |
Correct |
0 ms |
12220 KB |
Output is correct |
8 |
Correct |
0 ms |
12220 KB |
Output is correct |
9 |
Correct |
0 ms |
12220 KB |
Output is correct |
10 |
Correct |
0 ms |
12220 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
12220 KB |
Output is correct |
2 |
Correct |
0 ms |
12220 KB |
Output is correct |
3 |
Correct |
0 ms |
12220 KB |
Output is correct |
4 |
Correct |
0 ms |
12220 KB |
Output is correct |
5 |
Correct |
0 ms |
12220 KB |
Output is correct |
6 |
Correct |
0 ms |
12220 KB |
Output is correct |
7 |
Correct |
4 ms |
12220 KB |
Output is correct |
8 |
Correct |
0 ms |
12220 KB |
Output is correct |
9 |
Correct |
0 ms |
12220 KB |
Output is correct |
10 |
Correct |
0 ms |
12220 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
12220 KB |
Output is correct |
2 |
Correct |
0 ms |
12220 KB |
Output is correct |
3 |
Correct |
0 ms |
12220 KB |
Output is correct |
4 |
Correct |
4 ms |
12220 KB |
Output is correct |
5 |
Correct |
0 ms |
12220 KB |
Output is correct |
6 |
Correct |
0 ms |
12220 KB |
Output is correct |
7 |
Correct |
4 ms |
12220 KB |
Output is correct |
8 |
Correct |
4 ms |
12220 KB |
Output is correct |
9 |
Correct |
8 ms |
12220 KB |
Output is correct |
10 |
Correct |
4 ms |
12220 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
52 ms |
12220 KB |
Output is correct |
2 |
Correct |
104 ms |
12220 KB |
Output is correct |
3 |
Correct |
164 ms |
12220 KB |
Output is correct |
4 |
Correct |
220 ms |
12220 KB |
Output is correct |
5 |
Correct |
160 ms |
12220 KB |
Output is correct |
6 |
Correct |
84 ms |
12220 KB |
Output is correct |
7 |
Correct |
284 ms |
12220 KB |
Output is correct |
8 |
Correct |
312 ms |
12220 KB |
Output is correct |
9 |
Correct |
324 ms |
12220 KB |
Output is correct |
10 |
Correct |
308 ms |
12220 KB |
Output is correct |