oj.uz

답안 #966988

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
966988 2024-04-20T19:43:06 Z vjudge1 별자리 3 (JOI20_constellation3) C++17
100 / 100
 430 ms 104020 KB 
#include<bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define pii pair<ll,ll>
#define ll long long
#define sz(x) (ll)x.size()
using namespace std;
const int mxn=2e5+5;
pii t[20][mxn];
int up[20][mxn];
int lv[mxn]{0},rv[mxn]{0};
int ti[mxn],to[mxn],cur=0;
ll fw[mxn]{0};
ll dp[mxn]{0};
vector<pii>g[mxn];
void add(int i,ll amt){
    for(;i<mxn;i+=i&-i)fw[i]+=amt;
}
ll qr(int i,ll rs=0){
    for(;i;i-=i&-i)rs+=fw[i];return rs;
}
int get(int l,int r){
    int lg=log2(r-l+1);
    return max(t[lg][l],t[lg][r-(1<<lg)+1]).s;
}
int build(int l,int r){
    if(l==r)return l;
    int m=get(l,r);
    if(m>l)lv[m]=build(l,m-1),up[0][lv[m]]=m;
    if(m<r)rv[m]=build(m+1,r),up[0][rv[m]]=m;
    return m;
}
void dfs(int u){
    ti[u]=++cur;
    if(lv[u])dfs(lv[u]);
    if(rv[u])dfs(rv[u]);
    to[u]=cur;
    if(lv[u]){
        add(ti[u],dp[lv[u]]);
        add(to[u]+1,-dp[lv[u]]);
        add(ti[lv[u]],-dp[lv[u]]);
        add(to[lv[u]]+1,dp[lv[u]]);
    }
    if(rv[u]){
        add(ti[u],dp[rv[u]]);
        add(to[u]+1,-dp[rv[u]]);
        add(ti[rv[u]],-dp[rv[u]]);
        add(to[rv[u]]+1,dp[rv[u]]);
    }dp[u]=dp[lv[u]]+dp[rv[u]];
    for(auto v:g[u]){
        dp[u]=max(dp[u],v.s+qr(ti[v.f]));
    }
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n;cin>>n;
    int a[n+1];for(int i=1;i<=n;i++)cin>>a[i],t[0][i]={a[i],i};
    for(int j=1;j<20;j++)for(int i=1;i+(1<<(j-1))<=n;i++)t[j][i]=max(t[j-1][i],t[j-1][i+(1<<(j-1))]);
    int root=build(1,n);up[0][root]=root;
    for(int j=1;j<20;j++)for(int i=1;i<=n;i++)up[j][i]=up[j-1][up[j-1][i]];
    int m;cin>>m;ll tt=0;
    for(int i=1;i<=m;i++){
        int x,y,c;cin>>x>>y>>c;int u=x;
        for(int j=19;j>=0;j--)if(a[up[j][u]]<y)u=up[j][u];
        g[u].pb({x,c});tt+=c;
    }dfs(root);cout<<tt-dp[root];
}

Compilation message

constellation3.cpp: In function 'long long int qr(int, long long int)':
constellation3.cpp:21:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   21 |     for(;i;i-=i&-i)rs+=fw[i];return rs;
      |     ^~~
constellation3.cpp:21:30: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   21 |     for(;i;i-=i&-i)rs+=fw[i];return rs;
      |                              ^~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 43608 KB Output is correct
2 Correct 8 ms 43608 KB Output is correct
3 Correct 7 ms 43612 KB Output is correct
4 Correct 6 ms 43612 KB Output is correct
5 Correct 6 ms 43608 KB Output is correct
6 Correct 6 ms 43624 KB Output is correct
7 Correct 6 ms 43612 KB Output is correct
8 Correct 6 ms 43608 KB Output is correct
9 Correct 6 ms 43612 KB Output is correct
10 Correct 6 ms 43612 KB Output is correct
11 Correct 8 ms 43612 KB Output is correct
12 Correct 7 ms 43612 KB Output is correct
13 Correct 6 ms 43612 KB Output is correct
14 Correct 7 ms 43608 KB Output is correct
15 Correct 6 ms 43612 KB Output is correct
16 Correct 6 ms 43608 KB Output is correct
17 Correct 6 ms 43612 KB Output is correct
18 Correct 6 ms 43612 KB Output is correct
19 Correct 6 ms 43612 KB Output is correct
20 Correct 6 ms 43612 KB Output is correct
21 Correct 6 ms 43612 KB Output is correct
22 Correct 6 ms 43612 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 43608 KB Output is correct
2 Correct 8 ms 43608 KB Output is correct
3 Correct 7 ms 43612 KB Output is correct
4 Correct 6 ms 43612 KB Output is correct
5 Correct 6 ms 43608 KB Output is correct
6 Correct 6 ms 43624 KB Output is correct
7 Correct 6 ms 43612 KB Output is correct
8 Correct 6 ms 43608 KB Output is correct
9 Correct 6 ms 43612 KB Output is correct
10 Correct 6 ms 43612 KB Output is correct
11 Correct 8 ms 43612 KB Output is correct
12 Correct 7 ms 43612 KB Output is correct
13 Correct 6 ms 43612 KB Output is correct
14 Correct 7 ms 43608 KB Output is correct
15 Correct 6 ms 43612 KB Output is correct
16 Correct 6 ms 43608 KB Output is correct
17 Correct 6 ms 43612 KB Output is correct
18 Correct 6 ms 43612 KB Output is correct
19 Correct 6 ms 43612 KB Output is correct
20 Correct 6 ms 43612 KB Output is correct
21 Correct 6 ms 43612 KB Output is correct
22 Correct 6 ms 43612 KB Output is correct
23 Correct 8 ms 50012 KB Output is correct
24 Correct 8 ms 50012 KB Output is correct
25 Correct 8 ms 50012 KB Output is correct
26 Correct 8 ms 50008 KB Output is correct
27 Correct 9 ms 50008 KB Output is correct
28 Correct 9 ms 50012 KB Output is correct
29 Correct 8 ms 50008 KB Output is correct
30 Correct 8 ms 50012 KB Output is correct
31 Correct 8 ms 50012 KB Output is correct
32 Correct 8 ms 49872 KB Output is correct
33 Correct 8 ms 50012 KB Output is correct
34 Correct 8 ms 49812 KB Output is correct
35 Correct 8 ms 50016 KB Output is correct
36 Correct 7 ms 50012 KB Output is correct
37 Correct 8 ms 49888 KB Output is correct
38 Correct 7 ms 50008 KB Output is correct
39 Correct 8 ms 50012 KB Output is correct
40 Correct 8 ms 50264 KB Output is correct
41 Correct 8 ms 50012 KB Output is correct
42 Correct 8 ms 49756 KB Output is correct
43 Correct 8 ms 50012 KB Output is correct
44 Correct 7 ms 50012 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 43608 KB Output is correct
2 Correct 8 ms 43608 KB Output is correct
3 Correct 7 ms 43612 KB Output is correct
4 Correct 6 ms 43612 KB Output is correct
5 Correct 6 ms 43608 KB Output is correct
6 Correct 6 ms 43624 KB Output is correct
7 Correct 6 ms 43612 KB Output is correct
8 Correct 6 ms 43608 KB Output is correct
9 Correct 6 ms 43612 KB Output is correct
10 Correct 6 ms 43612 KB Output is correct
11 Correct 8 ms 43612 KB Output is correct
12 Correct 7 ms 43612 KB Output is correct
13 Correct 6 ms 43612 KB Output is correct
14 Correct 7 ms 43608 KB Output is correct
15 Correct 6 ms 43612 KB Output is correct
16 Correct 6 ms 43608 KB Output is correct
17 Correct 6 ms 43612 KB Output is correct
18 Correct 6 ms 43612 KB Output is correct
19 Correct 6 ms 43612 KB Output is correct
20 Correct 6 ms 43612 KB Output is correct
21 Correct 6 ms 43612 KB Output is correct
22 Correct 6 ms 43612 KB Output is correct
23 Correct 8 ms 50012 KB Output is correct
24 Correct 8 ms 50012 KB Output is correct
25 Correct 8 ms 50012 KB Output is correct
26 Correct 8 ms 50008 KB Output is correct
27 Correct 9 ms 50008 KB Output is correct
28 Correct 9 ms 50012 KB Output is correct
29 Correct 8 ms 50008 KB Output is correct
30 Correct 8 ms 50012 KB Output is correct
31 Correct 8 ms 50012 KB Output is correct
32 Correct 8 ms 49872 KB Output is correct
33 Correct 8 ms 50012 KB Output is correct
34 Correct 8 ms 49812 KB Output is correct
35 Correct 8 ms 50016 KB Output is correct
36 Correct 7 ms 50012 KB Output is correct
37 Correct 8 ms 49888 KB Output is correct
38 Correct 7 ms 50008 KB Output is correct
39 Correct 8 ms 50012 KB Output is correct
40 Correct 8 ms 50264 KB Output is correct
41 Correct 8 ms 50012 KB Output is correct
42 Correct 8 ms 49756 KB Output is correct
43 Correct 8 ms 50012 KB Output is correct
44 Correct 7 ms 50012 KB Output is correct
45 Correct 374 ms 95876 KB Output is correct
46 Correct 430 ms 95844 KB Output is correct
47 Correct 412 ms 96336 KB Output is correct
48 Correct 358 ms 95572 KB Output is correct
49 Correct 404 ms 95824 KB Output is correct
50 Correct 396 ms 95608 KB Output is correct
51 Correct 403 ms 95684 KB Output is correct
52 Correct 364 ms 96064 KB Output is correct
53 Correct 394 ms 95908 KB Output is correct
54 Correct 342 ms 102184 KB Output is correct
55 Correct 340 ms 100400 KB Output is correct
56 Correct 323 ms 99152 KB Output is correct
57 Correct 336 ms 98688 KB Output is correct
58 Correct 223 ms 99828 KB Output is correct
59 Correct 236 ms 100056 KB Output is correct
60 Correct 121 ms 104020 KB Output is correct
61 Correct 409 ms 94992 KB Output is correct
62 Correct 326 ms 102740 KB Output is correct
63 Correct 316 ms 94700 KB Output is correct
64 Correct 286 ms 94672 KB Output is correct
65 Correct 344 ms 102740 KB Output is correct
66 Correct 323 ms 94740 KB Output is correct