oj.uz

Submission #785780

# Submission time Handle Problem Language Result Execution time Memory
785780 2023-07-17T15:17:48 Z winter0101 Construction of Highway (JOI18_construction) C++14
100 / 100
 329 ms 32728 KB 
#include<bits/stdc++.h>
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
const int maxn=1e5+9;
int c[maxn];
vector<int>a[maxn];
int bit[maxn];
int n;
void add(int pos,int val){
for(;pos<=n;pos+=(pos-(pos&(pos-1))))bit[pos]+=val;
}
int get(int pos){
int sum=0;
for(;pos>=1;pos-=(pos-(pos&(pos-1))))sum+=bit[pos];
return sum;
}
pii b[maxn];
int head[maxn];
int sub[maxn];
int gr[maxn];
int p[maxn];
void dfs(int u,int par){
sub[u]=1;
p[u]=par;
for (auto &v:a[u]){
    if (v==par)continue;
    dfs(v,u);
    sub[u]+=sub[v];
    if (a[u][0]==par||sub[a[u][0]]<sub[v]){
        swap(v,a[u][0]);
    }
}
}
int tme=0,cnt=1;
int pos[maxn];
void hld(int u,int par,int h){
head[u]=h;
gr[u]=cnt;
pos[u]=++tme;
if (a[u][0]==par)return;
hld(a[u][0],u,h);
for (auto v:a[u]){
    if (v==a[u][0]||v==par)continue;
    cnt++;
    hld(v,u,v);
}
}
struct line{
int l,r,val;
bool operator < (const line &p1)const {
return l<p1.l;
}
};
multiset<line>nw[maxn];
multiset<line>::iterator it;
long long addpath(int u,int val){
vector<pii>needtoerase;
int began=u;
long long ans=0;
while (u!=0){
    line tmp;
    tmp.l=pos[head[u]],tmp.r=pos[u],tmp.val=val;
    if (!nw[gr[u]].empty()){
        vector<pii>xoa;
        while (!nw[gr[u]].empty()){
            it=nw[gr[u]].begin();
            auto t=(*it);
            if (t.l>tmp.r)break;
            if (t.r<=tmp.r){
                xoa.pb({t.r-t.l+1,t.val});
                nw[gr[u]].erase(it);
                continue;
            }
            //tmp.l<=t.l<=tmp.r<=t.r
            auto copyt=t;
            copyt.l=tmp.r+1;
            nw[gr[u]].erase(it);
            nw[gr[u]].insert(copyt);
            t.r=tmp.r;
            xoa.pb({t.r-t.l+1,t.val});
        }
        reverse(all(xoa));
        for (auto v:xoa){
            needtoerase.pb(v);
            long long bonus=1ll*v.fi*get(v.se-1);
            add(v.se,v.fi);
            ans+=bonus;
        }
    }
    nw[gr[u]].insert(tmp);
    u=p[head[u]];
}
for (auto v:needtoerase){
    add(v.se,-v.fi);
    //cout<<began<<" "<<v.fi<<" "<<v.se<<'\n';
}
return ans;
}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("temp.INP","r",stdin);
    //freopen(".OUT","w",stdout);
    cin>>n;
    vector<int>nen;
    nen.pb(0);
    map<int,int>nenso;
    for1(i,1,n){
    cin>>c[i];
    nen.pb(c[i]);
    }
    sort(all(nen));
    for1(i,1,sz(nen)-1){
    if (nen[i]==nen[i-1])continue;
    nenso[nen[i]]=nenso[nen[i-1]]+1;
    }
    for1(i,1,n){
    c[i]=nenso[c[i]];
    }
    for1(i,1,n-1){
    cin>>b[i].fi>>b[i].se;
    a[b[i].fi].pb(b[i].se);
    a[b[i].se].pb(b[i].fi);
    }
    dfs(1,0);
    hld(1,0,1);
    addpath(1,c[1]);
    for1(i,1,n-1){
    cout<<addpath(b[i].se,c[b[i].se])<<'\n';
    }
}

Compilation message

construction.cpp: In function 'long long int addpath(int, int)':
construction.cpp:71:5: warning: unused variable 'began' [-Wunused-variable]
   71 | int began=u;
      |     ^~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB Output is correct
2 Correct 4 ms 7356 KB Output is correct
3 Correct 3 ms 7384 KB Output is correct
4 Correct 3 ms 7380 KB Output is correct
5 Correct 5 ms 7396 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 5 ms 7380 KB Output is correct
8 Correct 4 ms 7508 KB Output is correct
9 Correct 3 ms 7508 KB Output is correct
10 Correct 4 ms 7388 KB Output is correct
11 Correct 5 ms 7508 KB Output is correct
12 Correct 3 ms 7524 KB Output is correct
13 Correct 4 ms 7508 KB Output is correct
14 Correct 4 ms 7508 KB Output is correct
15 Correct 6 ms 7380 KB Output is correct
16 Correct 5 ms 7380 KB Output is correct
17 Correct 6 ms 7384 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 4 ms 7508 KB Output is correct
21 Correct 4 ms 7392 KB Output is correct
22 Correct 4 ms 7380 KB Output is correct
23 Correct 4 ms 7388 KB Output is correct
24 Correct 3 ms 7380 KB Output is correct
25 Correct 4 ms 7380 KB Output is correct
26 Correct 4 ms 7380 KB Output is correct
27 Correct 4 ms 7508 KB Output is correct
28 Correct 6 ms 7384 KB Output is correct
29 Correct 5 ms 7388 KB Output is correct
30 Correct 4 ms 7468 KB Output is correct
31 Correct 4 ms 7388 KB Output is correct
32 Correct 3 ms 7392 KB Output is correct
33 Correct 4 ms 7496 KB Output is correct
34 Correct 3 ms 7388 KB Output is correct
35 Correct 4 ms 7384 KB Output is correct
36 Correct 3 ms 7380 KB Output is correct
37 Correct 4 ms 7380 KB Output is correct
38 Correct 4 ms 7380 KB Output is correct
39 Correct 3 ms 7380 KB Output is correct
40 Correct 4 ms 7416 KB Output is correct
41 Correct 4 ms 7388 KB Output is correct
42 Correct 6 ms 7388 KB Output is correct
43 Correct 4 ms 7384 KB Output is correct
44 Correct 4 ms 7380 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB Output is correct
2 Correct 4 ms 7356 KB Output is correct
3 Correct 3 ms 7384 KB Output is correct
4 Correct 3 ms 7380 KB Output is correct
5 Correct 5 ms 7396 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 5 ms 7380 KB Output is correct
8 Correct 4 ms 7508 KB Output is correct
9 Correct 3 ms 7508 KB Output is correct
10 Correct 4 ms 7388 KB Output is correct
11 Correct 5 ms 7508 KB Output is correct
12 Correct 3 ms 7524 KB Output is correct
13 Correct 4 ms 7508 KB Output is correct
14 Correct 4 ms 7508 KB Output is correct
15 Correct 6 ms 7380 KB Output is correct
16 Correct 5 ms 7380 KB Output is correct
17 Correct 6 ms 7384 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 4 ms 7508 KB Output is correct
21 Correct 4 ms 7392 KB Output is correct
22 Correct 4 ms 7380 KB Output is correct
23 Correct 4 ms 7388 KB Output is correct
24 Correct 3 ms 7380 KB Output is correct
25 Correct 4 ms 7380 KB Output is correct
26 Correct 4 ms 7380 KB Output is correct
27 Correct 4 ms 7508 KB Output is correct
28 Correct 6 ms 7384 KB Output is correct
29 Correct 5 ms 7388 KB Output is correct
30 Correct 4 ms 7468 KB Output is correct
31 Correct 4 ms 7388 KB Output is correct
32 Correct 3 ms 7392 KB Output is correct
33 Correct 4 ms 7496 KB Output is correct
34 Correct 3 ms 7388 KB Output is correct
35 Correct 4 ms 7384 KB Output is correct
36 Correct 3 ms 7380 KB Output is correct
37 Correct 4 ms 7380 KB Output is correct
38 Correct 4 ms 7380 KB Output is correct
39 Correct 3 ms 7380 KB Output is correct
40 Correct 4 ms 7416 KB Output is correct
41 Correct 4 ms 7388 KB Output is correct
42 Correct 6 ms 7388 KB Output is correct
43 Correct 4 ms 7384 KB Output is correct
44 Correct 4 ms 7380 KB Output is correct
45 Correct 6 ms 7504 KB Output is correct
46 Correct 9 ms 8020 KB Output is correct
47 Correct 13 ms 8020 KB Output is correct
48 Correct 8 ms 8020 KB Output is correct
49 Correct 6 ms 8148 KB Output is correct
50 Correct 6 ms 8200 KB Output is correct
51 Correct 6 ms 8148 KB Output is correct
52 Correct 6 ms 8276 KB Output is correct
53 Correct 7 ms 8372 KB Output is correct
54 Correct 6 ms 8404 KB Output is correct
55 Correct 6 ms 8404 KB Output is correct
56 Correct 6 ms 8148 KB Output is correct
57 Correct 10 ms 8148 KB Output is correct
58 Correct 13 ms 8116 KB Output is correct
59 Correct 15 ms 8140 KB Output is correct
60 Correct 12 ms 8164 KB Output is correct
61 Correct 7 ms 8148 KB Output is correct
62 Correct 7 ms 8148 KB Output is correct
63 Correct 7 ms 8208 KB Output is correct
64 Correct 7 ms 7892 KB Output is correct
65 Correct 7 ms 7892 KB Output is correct
66 Correct 8 ms 7892 KB Output is correct
67 Correct 10 ms 7916 KB Output is correct
68 Correct 5 ms 8020 KB Output is correct
69 Correct 7 ms 8276 KB Output is correct
70 Correct 6 ms 8160 KB Output is correct
71 Correct 7 ms 8020 KB Output is correct
72 Correct 11 ms 8064 KB Output is correct
73 Correct 11 ms 7912 KB Output is correct
74 Correct 6 ms 8020 KB Output is correct
75 Correct 8 ms 8148 KB Output is correct
76 Correct 6 ms 8020 KB Output is correct
77 Correct 7 ms 8108 KB Output is correct
78 Correct 6 ms 7892 KB Output is correct
79 Correct 6 ms 7912 KB Output is correct
80 Correct 6 ms 7904 KB Output is correct
81 Correct 7 ms 8148 KB Output is correct
82 Correct 7 ms 8108 KB Output is correct
83 Correct 7 ms 8020 KB Output is correct
84 Correct 6 ms 7912 KB Output is correct
85 Correct 6 ms 7904 KB Output is correct
86 Correct 6 ms 7892 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB Output is correct
2 Correct 4 ms 7356 KB Output is correct
3 Correct 3 ms 7384 KB Output is correct
4 Correct 3 ms 7380 KB Output is correct
5 Correct 5 ms 7396 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 5 ms 7380 KB Output is correct
8 Correct 4 ms 7508 KB Output is correct
9 Correct 3 ms 7508 KB Output is correct
10 Correct 4 ms 7388 KB Output is correct
11 Correct 5 ms 7508 KB Output is correct
12 Correct 3 ms 7524 KB Output is correct
13 Correct 4 ms 7508 KB Output is correct
14 Correct 4 ms 7508 KB Output is correct
15 Correct 6 ms 7380 KB Output is correct
16 Correct 5 ms 7380 KB Output is correct
17 Correct 6 ms 7384 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 4 ms 7508 KB Output is correct
21 Correct 4 ms 7392 KB Output is correct
22 Correct 4 ms 7380 KB Output is correct
23 Correct 4 ms 7388 KB Output is correct
24 Correct 3 ms 7380 KB Output is correct
25 Correct 4 ms 7380 KB Output is correct
26 Correct 4 ms 7380 KB Output is correct
27 Correct 4 ms 7508 KB Output is correct
28 Correct 6 ms 7384 KB Output is correct
29 Correct 5 ms 7388 KB Output is correct
30 Correct 4 ms 7468 KB Output is correct
31 Correct 4 ms 7388 KB Output is correct
32 Correct 3 ms 7392 KB Output is correct
33 Correct 4 ms 7496 KB Output is correct
34 Correct 3 ms 7388 KB Output is correct
35 Correct 4 ms 7384 KB Output is correct
36 Correct 3 ms 7380 KB Output is correct
37 Correct 4 ms 7380 KB Output is correct
38 Correct 4 ms 7380 KB Output is correct
39 Correct 3 ms 7380 KB Output is correct
40 Correct 4 ms 7416 KB Output is correct
41 Correct 4 ms 7388 KB Output is correct
42 Correct 6 ms 7388 KB Output is correct
43 Correct 4 ms 7384 KB Output is correct
44 Correct 4 ms 7380 KB Output is correct
45 Correct 6 ms 7504 KB Output is correct
46 Correct 9 ms 8020 KB Output is correct
47 Correct 13 ms 8020 KB Output is correct
48 Correct 8 ms 8020 KB Output is correct
49 Correct 6 ms 8148 KB Output is correct
50 Correct 6 ms 8200 KB Output is correct
51 Correct 6 ms 8148 KB Output is correct
52 Correct 6 ms 8276 KB Output is correct
53 Correct 7 ms 8372 KB Output is correct
54 Correct 6 ms 8404 KB Output is correct
55 Correct 6 ms 8404 KB Output is correct
56 Correct 6 ms 8148 KB Output is correct
57 Correct 10 ms 8148 KB Output is correct
58 Correct 13 ms 8116 KB Output is correct
59 Correct 15 ms 8140 KB Output is correct
60 Correct 12 ms 8164 KB Output is correct
61 Correct 7 ms 8148 KB Output is correct
62 Correct 7 ms 8148 KB Output is correct
63 Correct 7 ms 8208 KB Output is correct
64 Correct 7 ms 7892 KB Output is correct
65 Correct 7 ms 7892 KB Output is correct
66 Correct 8 ms 7892 KB Output is correct
67 Correct 10 ms 7916 KB Output is correct
68 Correct 5 ms 8020 KB Output is correct
69 Correct 7 ms 8276 KB Output is correct
70 Correct 6 ms 8160 KB Output is correct
71 Correct 7 ms 8020 KB Output is correct
72 Correct 11 ms 8064 KB Output is correct
73 Correct 11 ms 7912 KB Output is correct
74 Correct 6 ms 8020 KB Output is correct
75 Correct 8 ms 8148 KB Output is correct
76 Correct 6 ms 8020 KB Output is correct
77 Correct 7 ms 8108 KB Output is correct
78 Correct 6 ms 7892 KB Output is correct
79 Correct 6 ms 7912 KB Output is correct
80 Correct 6 ms 7904 KB Output is correct
81 Correct 7 ms 8148 KB Output is correct
82 Correct 7 ms 8108 KB Output is correct
83 Correct 7 ms 8020 KB Output is correct
84 Correct 6 ms 7912 KB Output is correct
85 Correct 6 ms 7904 KB Output is correct
86 Correct 6 ms 7892 KB Output is correct
87 Correct 19 ms 9188 KB Output is correct
88 Correct 54 ms 12712 KB Output is correct
89 Correct 222 ms 25448 KB Output is correct
90 Correct 223 ms 25480 KB Output is correct
91 Correct 215 ms 25556 KB Output is correct
92 Correct 107 ms 29152 KB Output is correct
93 Correct 112 ms 29164 KB Output is correct
94 Correct 106 ms 29184 KB Output is correct
95 Correct 125 ms 32360 KB Output is correct
96 Correct 131 ms 32708 KB Output is correct
97 Correct 124 ms 32728 KB Output is correct
98 Correct 128 ms 32684 KB Output is correct
99 Correct 120 ms 28596 KB Output is correct
100 Correct 281 ms 25296 KB Output is correct
101 Correct 302 ms 25516 KB Output is correct
102 Correct 329 ms 25632 KB Output is correct
103 Correct 310 ms 25580 KB Output is correct
104 Correct 126 ms 28572 KB Output is correct
105 Correct 132 ms 28620 KB Output is correct
106 Correct 121 ms 28492 KB Output is correct
107 Correct 160 ms 19692 KB Output is correct
108 Correct 167 ms 19780 KB Output is correct
109 Correct 189 ms 21468 KB Output is correct
110 Correct 63 ms 23528 KB Output is correct
111 Correct 133 ms 32276 KB Output is correct
112 Correct 84 ms 27056 KB Output is correct
113 Correct 86 ms 23016 KB Output is correct
114 Correct 292 ms 25216 KB Output is correct
115 Correct 254 ms 19964 KB Output is correct
116 Correct 101 ms 22900 KB Output is correct
117 Correct 114 ms 26060 KB Output is correct
118 Correct 120 ms 25332 KB Output is correct
119 Correct 126 ms 25036 KB Output is correct
120 Correct 77 ms 20824 KB Output is correct
121 Correct 76 ms 20240 KB Output is correct
122 Correct 76 ms 19936 KB Output is correct
123 Correct 133 ms 26060 KB Output is correct
124 Correct 128 ms 25416 KB Output is correct
125 Correct 135 ms 25132 KB Output is correct
126 Correct 87 ms 20940 KB Output is correct
127 Correct 92 ms 20352 KB Output is correct
128 Correct 91 ms 19920 KB Output is correct