oj.uz

답안 #944727

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
944727 2024-03-13T04:11:48 Z guagua0407 별자리 3 (JOI20_constellation3) C++17
100 / 100
 306 ms 74756 KB 
//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

const int mxn=2e5+5;
const int inf=1e9;
const ll inf2=1e18;
int a[mxn];
pair<int,int> table[mxn][18];
int up[mxn][18];
vector<pair<int,int>> st[mxn],en[mxn];
int l[mxn],r[mxn];
ll dp[mxn];
int ordl[mxn],ordr[mxn];
ll bit[mxn];
int cnt=0;

void update(int pos,ll val){
    for(;pos<mxn;pos+=(pos&-pos)){
        bit[pos]+=val;
    }
}

ll query(int pos){
    ll ans=0;
    for(;pos>0;pos-=(pos&-pos)){
        ans+=bit[pos];
    }
    return ans;
}

int get(int l,int r){
    int b=__lg(r-l+1);
    return max(table[l][b],table[r-(1<<b)+1][b]).s;
}

void go(int L,int R){
    if(L==R) return;
    int mid=get(L,R);
    if(mid>L){
        l[mid]=get(L,mid-1);
        up[l[mid]][0]=mid;
        go(L,mid-1);
    }
    if(mid<R){
        r[mid]=get(mid+1,R);
        up[r[mid]][0]=mid;
        go(mid+1,R);
    }
}

void dfs(int v){
    //cout<<v<<' '<<l[v]<<' '<<r[v]<<'\n';
    ordl[v]=++cnt;
    if(l[v]!=0){
        dfs(l[v]);
    }
    if(r[v]!=0){
        dfs(r[v]);
    }
    ordr[v]=cnt;
    if(l[v]!=0){
        update(ordl[v],dp[l[v]]);
        update(ordr[v]+1,-dp[l[v]]);
        update(ordl[l[v]],-dp[l[v]]);
        update(ordr[l[v]]+1,dp[l[v]]);
    }
    if(r[v]!=0){
        update(ordl[v],dp[r[v]]);
        update(ordr[v]+1,-dp[r[v]]);
        update(ordl[r[v]],-dp[r[v]]);
        update(ordr[r[v]]+1,dp[r[v]]);
    }
    dp[v]=dp[l[v]]+dp[r[v]];
    for(auto u:en[v]){
        int x=u.f;
        dp[v]=max(dp[v],query(ordl[x])+u.s);
    }
}

signed main() {_
    int n;
    cin>>n;
    a[0]=inf;
    //dp[0]=-inf2;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        table[i][0]={a[i],i};
    }
    for(int j=1;j<18;j++){
        for(int i=1;i+(1<<j)-1<=n;i++){
            table[i][j]=max(table[i][j-1],table[i+(1<<(j-1))][j-1]);
        }
    }
    int root=get(1,n);
    go(1,n);
    for(int j=1;j<18;j++){
        for(int i=1;i<=n;i++){
            up[i][j]=up[up[i][j-1]][j-1];
        }
    }
    int m;
    cin>>m;
    ll sum=0;
    for(int i=1;i<=m;i++){
        int x,y,c;
        cin>>x>>y>>c;
        sum+=c;
        int node=x;
        for(int j=17;j>=0;j--){
            int v=up[node][j];
            if(a[v]<y) node=v;
        }
        //cout<<st<<'\n';
        en[node].push_back({x,c});
        st[x].push_back({node,c});
    }
    dfs(root);
    cout<<sum-dp[root]<<'\n';
    return 0;
}
//maybe its multiset not set
//yeeorz
//laborz

Compilation message

constellation3.cpp: In function 'void setIO(std::string)':
constellation3.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
constellation3.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 4 ms 18944 KB Output is correct
5 Correct 4 ms 19044 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 4 ms 18780 KB Output is correct
11 Correct 4 ms 18780 KB Output is correct
12 Correct 4 ms 18980 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 4 ms 18936 KB Output is correct
15 Correct 4 ms 18776 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 3 ms 18780 KB Output is correct
18 Correct 4 ms 18952 KB Output is correct
19 Correct 4 ms 18780 KB Output is correct
20 Correct 4 ms 18780 KB Output is correct
21 Correct 4 ms 18884 KB Output is correct
22 Correct 3 ms 18780 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 4 ms 18944 KB Output is correct
5 Correct 4 ms 19044 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 4 ms 18780 KB Output is correct
11 Correct 4 ms 18780 KB Output is correct
12 Correct 4 ms 18980 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 4 ms 18936 KB Output is correct
15 Correct 4 ms 18776 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 3 ms 18780 KB Output is correct
18 Correct 4 ms 18952 KB Output is correct
19 Correct 4 ms 18780 KB Output is correct
20 Correct 4 ms 18780 KB Output is correct
21 Correct 4 ms 18884 KB Output is correct
22 Correct 3 ms 18780 KB Output is correct
23 Correct 8 ms 19036 KB Output is correct
24 Correct 5 ms 19016 KB Output is correct
25 Correct 5 ms 19036 KB Output is correct
26 Correct 5 ms 19036 KB Output is correct
27 Correct 5 ms 19036 KB Output is correct
28 Correct 5 ms 19036 KB Output is correct
29 Correct 5 ms 19036 KB Output is correct
30 Correct 5 ms 19048 KB Output is correct
31 Correct 5 ms 19036 KB Output is correct
32 Correct 5 ms 19104 KB Output is correct
33 Correct 5 ms 19036 KB Output is correct
34 Correct 6 ms 19036 KB Output is correct
35 Correct 5 ms 19032 KB Output is correct
36 Correct 4 ms 19036 KB Output is correct
37 Correct 5 ms 19036 KB Output is correct
38 Correct 4 ms 19032 KB Output is correct
39 Correct 6 ms 19036 KB Output is correct
40 Correct 5 ms 19036 KB Output is correct
41 Correct 4 ms 19036 KB Output is correct
42 Correct 5 ms 19036 KB Output is correct
43 Correct 5 ms 18932 KB Output is correct
44 Correct 5 ms 19036 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 4 ms 18944 KB Output is correct
5 Correct 4 ms 19044 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 4 ms 18780 KB Output is correct
11 Correct 4 ms 18780 KB Output is correct
12 Correct 4 ms 18980 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 4 ms 18936 KB Output is correct
15 Correct 4 ms 18776 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 3 ms 18780 KB Output is correct
18 Correct 4 ms 18952 KB Output is correct
19 Correct 4 ms 18780 KB Output is correct
20 Correct 4 ms 18780 KB Output is correct
21 Correct 4 ms 18884 KB Output is correct
22 Correct 3 ms 18780 KB Output is correct
23 Correct 8 ms 19036 KB Output is correct
24 Correct 5 ms 19016 KB Output is correct
25 Correct 5 ms 19036 KB Output is correct
26 Correct 5 ms 19036 KB Output is correct
27 Correct 5 ms 19036 KB Output is correct
28 Correct 5 ms 19036 KB Output is correct
29 Correct 5 ms 19036 KB Output is correct
30 Correct 5 ms 19048 KB Output is correct
31 Correct 5 ms 19036 KB Output is correct
32 Correct 5 ms 19104 KB Output is correct
33 Correct 5 ms 19036 KB Output is correct
34 Correct 6 ms 19036 KB Output is correct
35 Correct 5 ms 19032 KB Output is correct
36 Correct 4 ms 19036 KB Output is correct
37 Correct 5 ms 19036 KB Output is correct
38 Correct 4 ms 19032 KB Output is correct
39 Correct 6 ms 19036 KB Output is correct
40 Correct 5 ms 19036 KB Output is correct
41 Correct 4 ms 19036 KB Output is correct
42 Correct 5 ms 19036 KB Output is correct
43 Correct 5 ms 18932 KB Output is correct
44 Correct 5 ms 19036 KB Output is correct
45 Correct 267 ms 66668 KB Output is correct
46 Correct 266 ms 66280 KB Output is correct
47 Correct 228 ms 66536 KB Output is correct
48 Correct 220 ms 66596 KB Output is correct
49 Correct 253 ms 66372 KB Output is correct
50 Correct 222 ms 66328 KB Output is correct
51 Correct 241 ms 66424 KB Output is correct
52 Correct 227 ms 66388 KB Output is correct
53 Correct 228 ms 66320 KB Output is correct
54 Correct 306 ms 72608 KB Output is correct
55 Correct 301 ms 70480 KB Output is correct
56 Correct 287 ms 69412 KB Output is correct
57 Correct 274 ms 68692 KB Output is correct
58 Correct 212 ms 69288 KB Output is correct
59 Correct 222 ms 69480 KB Output is correct
60 Correct 157 ms 74756 KB Output is correct
61 Correct 204 ms 65872 KB Output is correct
62 Correct 285 ms 73208 KB Output is correct
63 Correct 202 ms 65484 KB Output is correct
64 Correct 214 ms 65536 KB Output is correct
65 Correct 282 ms 73040 KB Output is correct
66 Correct 228 ms 65416 KB Output is correct