oj.uz

Submission #805536

# Submission time Handle Problem Language Result Execution time Memory
805536 2023-08-03T17:38:00 Z winter0101 Stranded Far From Home (BOI22_island) C++14
100 / 100
 389 ms 78552 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 gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
using pii=pair<int,int>;
using pli=pair<long long,int>;
using pil=pair<int,long long>;
using pll=pair<long long,long long>;
const int maxn=2e5+9;
int lab[maxn*2];
vector<int>a[maxn*2];
int findset(int u){
if (lab[u]==u)return u;
return lab[u]=findset(lab[u]);
}
int nnode=0;
int n,m;
int mx[maxn*2];
void unite(int u,int v,int w){
u=findset(u),v=findset(v);
if (u==v)return;
nnode++;
lab[nnode]=nnode;
a[nnode].pb(u);
a[nnode].pb(v);
mx[nnode]=w;
lab[u]=nnode;
lab[v]=nnode;
}
int b[maxn];
int d[maxn];
struct edg{
    int u,v;
    bool operator <(const edg &p)const {
    return max(b[u],b[v])<max(b[p.u],b[p.v]);
    }
}c[maxn];
long long sub[maxn*2];
int st[maxn*2][21];
void dfs(int u){
for (auto v:a[u]){
    st[v][0]=u;
    for1(j,1,20){
    st[v][j]=st[st[v][j-1]][j-1];
    }
    dfs(v);
    sub[u]+=sub[v];
}
}
signed main(){
    srand(time(0));
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("usaco.INP","r",stdin);
    //freopen("usaco.OUT","w",stdout);
    cin>>n>>m;
    for1(i,1,n){
    cin>>b[i];
    lab[i]=i;
    d[i]=b[i];
    mx[i]=b[i];
    sub[i]+=b[i];
    }
    sort(d+1,d+1+n);
    for1(i,1,m){
    cin>>c[i].u>>c[i].v;
    }
    sort(c+1,c+1+m);
    nnode=n;
    for1(i,1,m){
    unite(c[i].u,c[i].v,max(b[c[i].u],b[c[i].v]));
    }
    dfs(nnode);
    for1(i,1,n){
    long long nn=b[i];
    bool fl=false;
    while (true){
    //cerr<<nn<<'\n';
    int id=upper_bound(d+1,d+1+n,nn)-d;
    if (id==1+n){
        fl=true;
        break;
    }
    int kaka=i;
    for2(j,20,0){
    if (st[kaka][j]==0)continue;
    if (mx[st[kaka][j]]<=nn){
        kaka=st[kaka][j];
    }
    }
    //cout<<sub[kaka]<<'\n';
    long long newsum=sub[kaka];
    int id2=upper_bound(d+1,d+1+n,newsum)-d;
    if (id==id2){
        break;
    }
    nn=newsum;
    }
    cout<<fl;
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9728 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 10196 KB Output is correct
5 Correct 7 ms 10260 KB Output is correct
6 Correct 6 ms 10068 KB Output is correct
7 Correct 7 ms 10236 KB Output is correct
8 Correct 6 ms 10124 KB Output is correct
9 Correct 6 ms 10336 KB Output is correct
10 Correct 7 ms 10196 KB Output is correct
11 Correct 6 ms 10196 KB Output is correct
12 Correct 7 ms 10196 KB Output is correct
13 Correct 6 ms 10196 KB Output is correct
14 Correct 6 ms 10260 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 222 ms 70944 KB Output is correct
4 Correct 200 ms 61456 KB Output is correct
5 Correct 288 ms 61164 KB Output is correct
6 Correct 288 ms 62668 KB Output is correct
7 Correct 298 ms 62832 KB Output is correct
8 Correct 264 ms 62796 KB Output is correct
9 Correct 194 ms 62644 KB Output is correct
10 Correct 226 ms 77568 KB Output is correct
11 Correct 181 ms 77536 KB Output is correct
12 Correct 262 ms 61436 KB Output is correct
13 Correct 195 ms 61288 KB Output is correct
14 Correct 194 ms 61460 KB Output is correct
15 Correct 193 ms 78456 KB Output is correct
16 Correct 173 ms 77060 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 288 ms 62576 KB Output is correct
3 Correct 290 ms 62852 KB Output is correct
4 Correct 193 ms 62880 KB Output is correct
5 Correct 218 ms 61312 KB Output is correct
6 Correct 285 ms 62792 KB Output is correct
7 Correct 204 ms 78540 KB Output is correct
8 Correct 236 ms 78540 KB Output is correct
9 Correct 179 ms 77108 KB Output is correct
10 Correct 211 ms 62192 KB Output is correct
11 Correct 221 ms 61324 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9660 KB Output is correct
2 Correct 304 ms 63664 KB Output is correct
3 Correct 306 ms 62804 KB Output is correct
4 Correct 293 ms 62840 KB Output is correct
5 Correct 249 ms 63020 KB Output is correct
6 Correct 228 ms 62160 KB Output is correct
7 Correct 228 ms 78468 KB Output is correct
8 Correct 175 ms 69624 KB Output is correct
9 Correct 166 ms 38076 KB Output is correct
10 Correct 249 ms 61348 KB Output is correct
11 Correct 232 ms 61448 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9728 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 10196 KB Output is correct
5 Correct 7 ms 10260 KB Output is correct
6 Correct 6 ms 10068 KB Output is correct
7 Correct 7 ms 10236 KB Output is correct
8 Correct 6 ms 10124 KB Output is correct
9 Correct 6 ms 10336 KB Output is correct
10 Correct 7 ms 10196 KB Output is correct
11 Correct 6 ms 10196 KB Output is correct
12 Correct 7 ms 10196 KB Output is correct
13 Correct 6 ms 10196 KB Output is correct
14 Correct 6 ms 10260 KB Output is correct
15 Correct 5 ms 9684 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 222 ms 70944 KB Output is correct
18 Correct 200 ms 61456 KB Output is correct
19 Correct 288 ms 61164 KB Output is correct
20 Correct 288 ms 62668 KB Output is correct
21 Correct 298 ms 62832 KB Output is correct
22 Correct 264 ms 62796 KB Output is correct
23 Correct 194 ms 62644 KB Output is correct
24 Correct 226 ms 77568 KB Output is correct
25 Correct 181 ms 77536 KB Output is correct
26 Correct 262 ms 61436 KB Output is correct
27 Correct 195 ms 61288 KB Output is correct
28 Correct 194 ms 61460 KB Output is correct
29 Correct 193 ms 78456 KB Output is correct
30 Correct 173 ms 77060 KB Output is correct
31 Correct 5 ms 9684 KB Output is correct
32 Correct 288 ms 62576 KB Output is correct
33 Correct 290 ms 62852 KB Output is correct
34 Correct 193 ms 62880 KB Output is correct
35 Correct 218 ms 61312 KB Output is correct
36 Correct 285 ms 62792 KB Output is correct
37 Correct 204 ms 78540 KB Output is correct
38 Correct 236 ms 78540 KB Output is correct
39 Correct 179 ms 77108 KB Output is correct
40 Correct 211 ms 62192 KB Output is correct
41 Correct 221 ms 61324 KB Output is correct
42 Correct 5 ms 9660 KB Output is correct
43 Correct 304 ms 63664 KB Output is correct
44 Correct 306 ms 62804 KB Output is correct
45 Correct 293 ms 62840 KB Output is correct
46 Correct 249 ms 63020 KB Output is correct
47 Correct 228 ms 62160 KB Output is correct
48 Correct 228 ms 78468 KB Output is correct
49 Correct 175 ms 69624 KB Output is correct
50 Correct 166 ms 38076 KB Output is correct
51 Correct 249 ms 61348 KB Output is correct
52 Correct 232 ms 61448 KB Output is correct
53 Correct 5 ms 9684 KB Output is correct
54 Correct 4 ms 9684 KB Output is correct
55 Correct 4 ms 9732 KB Output is correct
56 Correct 6 ms 10196 KB Output is correct
57 Correct 6 ms 10196 KB Output is correct
58 Correct 6 ms 10080 KB Output is correct
59 Correct 6 ms 10196 KB Output is correct
60 Correct 6 ms 10068 KB Output is correct
61 Correct 7 ms 10332 KB Output is correct
62 Correct 6 ms 10260 KB Output is correct
63 Correct 6 ms 10256 KB Output is correct
64 Correct 6 ms 10196 KB Output is correct
65 Correct 6 ms 10260 KB Output is correct
66 Correct 6 ms 10196 KB Output is correct
67 Correct 222 ms 70956 KB Output is correct
68 Correct 191 ms 61408 KB Output is correct
69 Correct 277 ms 61144 KB Output is correct
70 Correct 324 ms 62712 KB Output is correct
71 Correct 288 ms 62836 KB Output is correct
72 Correct 276 ms 62876 KB Output is correct
73 Correct 172 ms 62740 KB Output is correct
74 Correct 267 ms 77624 KB Output is correct
75 Correct 192 ms 77500 KB Output is correct
76 Correct 259 ms 61372 KB Output is correct
77 Correct 193 ms 61284 KB Output is correct
78 Correct 191 ms 61564 KB Output is correct
79 Correct 187 ms 78504 KB Output is correct
80 Correct 200 ms 77136 KB Output is correct
81 Correct 280 ms 62456 KB Output is correct
82 Correct 314 ms 62860 KB Output is correct
83 Correct 203 ms 62888 KB Output is correct
84 Correct 210 ms 61296 KB Output is correct
85 Correct 286 ms 62876 KB Output is correct
86 Correct 210 ms 78552 KB Output is correct
87 Correct 226 ms 78460 KB Output is correct
88 Correct 207 ms 62116 KB Output is correct
89 Correct 234 ms 61412 KB Output is correct
90 Correct 301 ms 63720 KB Output is correct
91 Correct 297 ms 62848 KB Output is correct
92 Correct 300 ms 62888 KB Output is correct
93 Correct 256 ms 62864 KB Output is correct
94 Correct 241 ms 62164 KB Output is correct
95 Correct 266 ms 78448 KB Output is correct
96 Correct 178 ms 69520 KB Output is correct
97 Correct 179 ms 38136 KB Output is correct
98 Correct 272 ms 61348 KB Output is correct
99 Correct 248 ms 61380 KB Output is correct
100 Correct 55 ms 14428 KB Output is correct
101 Correct 388 ms 63044 KB Output is correct
102 Correct 199 ms 55036 KB Output is correct
103 Correct 367 ms 60092 KB Output is correct
104 Correct 389 ms 64224 KB Output is correct