| # |
제출 시각 |
아이디 |
문제 |
언어 |
결과 |
실행 시간 |
메모리 |
| 282202 |
2020-08-24T06:30:11 Z |
문홍윤(#5760) |
방벽 (JOI15_walls) |
C++17 |
|
274 ms |
17748 KB |
#include <bits/stdc++.h>
#define eb emplace_back
#define mp make_pair
#define F first
#define S second
#define svec(x) sort(x.begin(), x.end())
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;
typedef pair<LL, int> pli;
int n, m, re;
LL l[200010], r[200010], arr[200010]={-1}, ans[200010];
vector<pli> vc;
priority_queue<pair<LL, pii>, vector<pair<LL, pii> >, greater<pair<LL, pii> > > pq;
int pr[200010], nx[200010];
LL sum, cnt;
bool ch[200010];
void calc_pq(LL num){
while(pq.size()){
LL d=pq.top().F;
int f=pq.top().S.F, r=pq.top().S.S;
if(d>=num)return;
pq.pop();
if(ch[f]||ch[r])continue;
int pf=pr[f], nr=nx[r];
if(!pf){
nx[0]=r;
pr[r]=0;
sum-=d;
cnt--;
ch[f]=true;
continue;
}
if(!nr){
nx[f]=0;
cnt--;
sum-=d;
ch[r]=true;
continue;
}
ch[f]=ch[r]=true;
nx[pf]=nr;
pr[nr]=pf;
cnt-=2;
sum-=llabs(arr[f]-arr[pf]);
sum-=d;
sum-=llabs(arr[nr]-arr[r]);
sum+=llabs(arr[nr]-arr[pf]);
pq.push(mp(llabs(arr[nr]-arr[pf]), mp(pf, nr)));
}
}
void get_naive(int num){
int nw=nx[0];
LL nl=l[num], nr=r[num];
while(nw){
if(nr<=arr[nw]){
ans[num]+=arr[nw]-nr;
nl+=arr[nw]-nr;
nr=arr[nw];
}
if(arr[nw]<=nl){
ans[num]+=nl-arr[nw];
nr-=nl-arr[nw];
nl=arr[nw];
}
nw=nx[nw];
}
}
int main(){
scanf("%d %d", &n, &m);
for(int i=1; i<=n; i++){
scanf("%lld %lld\n", &l[i], &r[i]);
vc.eb(r[i]-l[i], i);
}
svec(vc);
for(int i=1; i<=m; i++){
LL a;
scanf("%lld", &a);
if(arr[re]==a)continue;
if(re<2){
arr[++re]=a;
continue;
}
if(arr[re]-arr[re-1]<0&&a-arr[re]<0){
arr[re]=a;
continue;
}
if(arr[re]-arr[re-1]>0&&a-arr[re]>0){
arr[re]=a;
continue;
}
arr[++re]=a;
}
m=re;
nx[0]=1;
for(int i=2; i<=m; i++){
pq.push(mp(llabs(arr[i]-arr[i-1]), mp(i-1, i)));
sum+=llabs(arr[i]-arr[i-1]);
cnt++;
nx[i-1]=i;
pr[i]=i-1;
}
for(auto i:vc){
if(cnt<=10){
get_naive(i.S);
continue;
}
calc_pq(i.F);
ans[i.S]=sum-cnt*i.F;
LL nl=l[i.S], nr=r[i.S];
int fr=nx[0];
if(nr<=arr[fr]){
ans[i.S]+=arr[fr]-nr;
nl+=arr[fr]-nr;
nr=arr[fr];
}
if(arr[fr]<=nl){
ans[i.S]+=nl-arr[fr];
nr-=nl-arr[fr];
nl=arr[fr];
}
for(int t=1; t<=3; t++){
if(!nx[fr])break;
ans[i.S]-=llabs(arr[fr]-arr[nx[fr]])-i.F;
fr=nx[fr];
if(nr<=arr[fr]){
ans[i.S]+=arr[fr]-nr;
nl+=arr[fr]-nr;
nr=arr[fr];
}
if(arr[fr]<=nl){
ans[i.S]+=nl-arr[fr];
nr-=nl-arr[fr];
nl=arr[fr];
}
}
}
for(int i=1; i<=n; i++)printf("%lld\n", ans[i]);
}
Compilation message
walls.cpp: In function 'int main()':
walls.cpp:75:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
75 | scanf("%d %d", &n, &m);
| ~~~~~^~~~~~~~~~~~~~~~~
walls.cpp:77:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
77 | scanf("%lld %lld\n", &l[i], &r[i]);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
walls.cpp:83:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
83 | scanf("%lld", &a);
| ~~~~~^~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
664 KB |
Output is correct |
| 2 |
Correct |
65 ms |
6632 KB |
Output is correct |
| 3 |
Correct |
75 ms |
7272 KB |
Output is correct |
| 4 |
Correct |
71 ms |
7144 KB |
Output is correct |
| 5 |
Correct |
76 ms |
7272 KB |
Output is correct |
| 6 |
Correct |
55 ms |
7148 KB |
Output is correct |
| 7 |
Correct |
29 ms |
384 KB |
Output is correct |
| 8 |
Correct |
36 ms |
384 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
19 ms |
2160 KB |
Output is correct |
| 2 |
Correct |
97 ms |
7284 KB |
Output is correct |
| 3 |
Correct |
128 ms |
11612 KB |
Output is correct |
| 4 |
Correct |
251 ms |
17620 KB |
Output is correct |
| 5 |
Correct |
228 ms |
15572 KB |
Output is correct |
| 6 |
Correct |
248 ms |
17620 KB |
Output is correct |
| 7 |
Correct |
229 ms |
15576 KB |
Output is correct |
| 8 |
Correct |
252 ms |
17620 KB |
Output is correct |
| 9 |
Correct |
127 ms |
9692 KB |
Output is correct |
| 10 |
Correct |
203 ms |
17236 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
664 KB |
Output is correct |
| 2 |
Correct |
65 ms |
6632 KB |
Output is correct |
| 3 |
Correct |
75 ms |
7272 KB |
Output is correct |
| 4 |
Correct |
71 ms |
7144 KB |
Output is correct |
| 5 |
Correct |
76 ms |
7272 KB |
Output is correct |
| 6 |
Correct |
55 ms |
7148 KB |
Output is correct |
| 7 |
Correct |
29 ms |
384 KB |
Output is correct |
| 8 |
Correct |
36 ms |
384 KB |
Output is correct |
| 9 |
Correct |
19 ms |
2160 KB |
Output is correct |
| 10 |
Correct |
97 ms |
7284 KB |
Output is correct |
| 11 |
Correct |
128 ms |
11612 KB |
Output is correct |
| 12 |
Correct |
251 ms |
17620 KB |
Output is correct |
| 13 |
Correct |
228 ms |
15572 KB |
Output is correct |
| 14 |
Correct |
248 ms |
17620 KB |
Output is correct |
| 15 |
Correct |
229 ms |
15576 KB |
Output is correct |
| 16 |
Correct |
252 ms |
17620 KB |
Output is correct |
| 17 |
Correct |
127 ms |
9692 KB |
Output is correct |
| 18 |
Correct |
203 ms |
17236 KB |
Output is correct |
| 19 |
Correct |
245 ms |
15656 KB |
Output is correct |
| 20 |
Correct |
268 ms |
17748 KB |
Output is correct |
| 21 |
Correct |
238 ms |
15700 KB |
Output is correct |
| 22 |
Correct |
256 ms |
16984 KB |
Output is correct |
| 23 |
Correct |
247 ms |
15700 KB |
Output is correct |
| 24 |
Correct |
274 ms |
17748 KB |
Output is correct |
| 25 |
Correct |
154 ms |
9820 KB |
Output is correct |
| 26 |
Correct |
155 ms |
10460 KB |
Output is correct |
| 27 |
Correct |
227 ms |
17200 KB |
Output is correct |
