QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#300587 | #4936. Shopping Changes | LeeShoW# | WA | 146ms | 13408kb | C++20 | 2.8kb | 2024-01-08 14:42:01 | 2024-01-08 14:42:02 |
Judging History
answer
#include<iostream>
#include<algorithm>
#include<vector>
#include<math.h>
#define int long long
using namespace std;
struct BIT{
int n;
vector<int>bit;
void init(int _n){
n=_n+1;
bit=vector<int>(n,0);
}
int lowbit(int x){
return x&-x;
}
int query(int x){
int res=0;
x++;
for(;x>0;x-=lowbit(x)){
res+=bit[x];
}
return res;
}
void upd(int x,int v){
x++;
for(;x<n;x+=lowbit(x)){
bit[x]+=v;
}
}
}a,b,c;
int all[100005];
vector<int>player[100005];
int n,m;
int sol1(){
int res=0;
a.init(200005);
for(int i=n-1;i>=0;i--){
res+=a.query(all[i]-1);
a.upd(all[i],1);
}
return res;
}
int sol2(int id){
int res=0;
int n=player[id].size();
for(int i=n-1;i>=0;i--){
//cout<<"Asdas";
res+=b.query(player[id][i]-1);
b.upd(player[id][i],1);
}
for(int i=0;i<n;i++){
b.upd(player[id][i],-1);
}
return res;
}
signed main() {
cin>>n>>m;
vector<int> inq;
for(int i=0;i<n;i++){
cin>>all[i];
inq.push_back(all[i]);
}
for(int i=0;i<m;i++){
int nn;
cin>>nn;
while(nn--){
int k;
cin>>k;
player[i].push_back(k);
inq.push_back(k);
}
}
sort(inq.begin(),inq.end());
inq.erase(unique(inq.begin(),inq.end()),inq.end());
for(int i=0;i<n;i++){
all[i]=lower_bound(inq.begin(),inq.end(),all[i])-inq.begin();
}
for(int i=0;i<m;i++){
for(int j=0;j<player[i].size();j++){
player[i][j]=lower_bound(inq.begin(),inq.end(),player[i][j])-inq.begin();
}
}
int ans=sol1();//算第一個逆敘述對
b.init(200005);
for(int i=0;i<m;i++){
int now_ans=ans+sol2(i);
vector<int>suf,pre;
for(int j=0;j<player[i].size();j++){
int now=player[i][j];
pre.push_back(a.query(now-1));
}
for(int j=0;j<player[i].size();j++){
int now=player[i][j];
suf.push_back(n-a.query(now));
}
for(int j=1;j<pre.size();j++){
pre[j]+=pre[j-1];
}
for(int j=suf.size()-2;j>=0;j--){
suf[j]+=suf[j+1];
}
/*cout<<i<<":"<<endl;
for(auto ii:pre){
cout<<ii<<" ";
}cout<<endl;
for(auto ii:suf){
cout<<ii<<" ";
}cout<<endl;*/
int add=1e9;
add=min(add,min(pre.back(),suf[0]));
for(int ii=0;ii<pre.size()-1;ii++){
add=min(add,pre[ii]+suf[ii+1]);
}
//cout<<endl;
//cout<<now_ans<<" "<<add<<endl;
cout<<now_ans+add<<endl;
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 8584kb
input:
3 3 5 6 7 6 2 3 4 8 9 10 2 100 99 3 5 6 7
output:
0 1 1
result:
ok 3 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 8564kb
input:
3 2 7 6 5 6 2 3 4 8 9 10 6 10 9 8 4 3 2
output:
3 27
result:
ok 2 lines
Test #3:
score: 0
Accepted
time: 2ms
memory: 9128kb
input:
1 1 589284012 1 767928734
output:
0
result:
ok single line: '0'
Test #4:
score: 0
Accepted
time: 100ms
memory: 12080kb
input:
10000 9999 298772847 712804102 869795012 527998188 804246450 598105371 843966934 639805471 937482040 887551242 254734680 188704975 17408126 626523673 553956319 697723205 231690822 637079761 232393146 377026277 962223856 338922458 912529500 710873344 942955137 51167037 195729799 529674367 990599310 4...
output:
24802338 24830913 24857654 24813132 24846150 24785558 24857315 24805175 24862714 24785339 24804999 24780907 24808009 24798987 24958122 24781372 24772291 24846071 24953540 24778276 24778689 24979527 24770012 24892097 24776909 24865295 24821506 24772586 24800432 24891424 24864488 24820312 24801522 248...
result:
ok 9999 lines
Test #5:
score: -100
Wrong Answer
time: 146ms
memory: 13408kb
input:
42320 25000 977178721 305456426 916831455 324594376 259922325 798438534 906876242 353428436 459214642 504133134 734517252 944888626 929971853 735313273 285979369 866298401 385768124 918185862 811827492 3054135 190006456 852394509 784943097 903969029 4089198 931644108 916374905 942243264 383987411 45...
output:
3916314418675128357 3916314418675115603 -2871622908222909871 -5024536049167389922 3916314418675024544 2550141243588838858 3916314418675011521 3916314418675071749 3916314420011714613 -692014381980452389 -1283564854538255991 3916314418675020710 -3622542692125549707 3898296610114322003 1764405821962164...
result:
wrong answer 1st lines differ - expected: '448869835', found: '3916314418675128357'