oj.uz

Submission #252378

# Submission time Handle Problem Language Result Execution time Memory
252378 2020-07-25T12:07:56 Z khangal Bridges (APIO19_bridges) C++14
43 / 100
 826 ms 209384 KB 
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long ll;
typedef double db;
typedef vector<long long> vl;
typedef pair<long long , long long > pl;
const int N=1e6+1;
#define po pop_back
#define pb push_back
#define mk make_pair
#define lw lower_bound
#define up upper_bound
#define ff first
#define ss second
#define boost ios_base::sync_with_stdio(); cin.tie(0); cout.tie(0);
#define MOD 1000000007
#define MAX 1e18 
#define MIN -1e18
#define rep(i,a,b) for(ll i=a;i<=b;i++)
#define per(i,a,b) for(ll i=b;i>=a;i--)
#define con continue
#define freopen freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
#define PI 3.14159265358979323846264338327950288419716939937510582097494459230781640628
// typedef tree<ll , null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
// template< typename T>
// using indexed_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
ll n,m,ans,mid,mn,mx,cnt,T,sum,h1,h2,e[1234567],b[1234567],c[1234567],d[1<<20],k,i,j,l,h,a[1234567],w;
ll x[1234567],y[1234567],z[1234567];
bool used[1234567],used1[1234567];
pl p[1234567];
string s,s1[1234567];
map<ll,ll> mp;
map<pl,ll> mpl;
vector<pl> vec,vec1,ansvec;
vector<ll> v[1234567],v1[1234567];
vector<ll> vp[1234567];
set<ll> st;
stack <ll> sta;
set<ll> c1[1234][1234];
ll tr[1234567];
void dfs(ll x){
    used[x]=1;
    ans++;
    for(auto u:v[x]){
        if(used[u]==0)dfs(u);
    }
}
ll solve(ll x){
    if(x==c[x])return x;
    else return c[x] = solve(c[x]);
}
void build(ll node,ll l,ll r){
    if(l==r){
        tr[node]=e[l];
        return;
    }
    ll mid=(l+r)/2;
    build(node*2 , l , mid);
    build(node*2+1 , mid+1 , r);
    tr[node] = min(tr[node*2] , tr[node*2+1]);
}
void update(ll node,ll l,ll r,ll k,ll val){
    if(l == r){
        tr[node]=val;
        return;
    }
    ll mid = (l+r)/2;
    if(k <= mid) update(node*2,l,mid,k,val);
    else update(node*2+1,mid+1,r,k,val);
    tr[node] = min(tr[node*2],tr[node*2+1]);
}
ll query(ll node,ll l,ll r,ll L,ll R){
    if(L <= l && R >= r) return tr[node];
    ll mid = (l+r)/2;
    if(L <= mid && R > mid){
        return min(query(node*2,l,mid,L,R),query(node*2+1,mid+1,r,L,R));
    }
    if(L <= mid) return query(node*2,l,mid,L,R);
    return query(node*2+1,mid+1,r,L,R);
}
ll solve(ll x,ll y){
    int lo = x, hi = m;
            while (lo < hi) {
                int mid = (lo + hi + 1)/2;
                if (query(1,1,m,x,mid) >= y)
                    lo = mid;
                else hi = mid-1;
            }
            int ans = 1;
            if (x != n && query(1,1,m,lo,lo) < y) lo--;
            if (x != n) ans += lo + 1 - x;
            lo = 1, hi = x-1;
            if (x != 1) {
            while (lo < hi) {
                int mid = (lo + hi)/2;
                if (query(1,1,m,mid,x-1) >= y)
                    hi = mid;
                else lo = mid+1;
            }
            if (hi == 0 || query(1,1,m,hi,x-1) < y) hi++;
            ans += x - hi;
            }
            return ans;
}
int main(){
    cin>>n>>m;
    rep(i,1,m){
        ll x,y,z;
        cin>>x>>y>>z;
        a[i]=x;
        b[i]=y;
        e[i]=z;
    }
    cin>>k;
    if(n<=1000&&m<=1000&&k<=100000){
        rep(i,1,k){
            ll q;
            cin>>q;
            if(q==1){
                ll l,r;
                cin>>l>>r;
                e[l]=r;
            }
            else{
                ll l,r;
                cin>>l>>r;
                rep(j,1,m)v[j].clear(),used[j]=0;
                // rep(j,1,m)cout<<e[j]<<" ";
                // cout<<'\n';
                rep(j,1,m){
                    if(e[j]>=r)v[a[j]].pb(b[j]),v[b[j]].pb(a[j]);
                }
                ans=0;
                dfs(l);
                cout<<ans<<'\n';
            }
        }
    }
    else{
        ll q=0;
        rep(i,1,k)cin>>x[i]>>y[i]>>z[i],q+=(x[i]==1);
        if(q==0){
            rep(i,1,n)c[i]=i,d[i]=1;
            vector<pair<ll,pl>> vpl;
            rep(i,1,m){
                vpl.pb({e[i],{a[i],b[i]}});
            }
            rep(i,1,k){
                vpl.pb({z[i],{-y[i],-i}});
            }
            sort(vpl.rbegin(),vpl.rend());
            rep(i,0,vpl.size()-1){
                if(vpl[i].ss.ss<0){
                    ll x = -vpl[i].ss.ss;
                    ll y = -vpl[i].ss.ff;
                    e[x] = d[solve(y)];
                }
                else{
                    ll y = vpl[i].ss.ss;
                    ll x = vpl[i].ss.ff;
                    x = solve(x);
                    y = solve(y);
                    if(x!=y){
                        d[x]+=d[y];
                        c[y]=x;
                    }
                }
            }
            rep(i,1,k)cout<<e[i]<<"\n";
        }
        else{
            rep(i,m+1,2*n)e[i]=MAX;
            build(1,1,m);
            //rep(i,1,2*n)cout<<tr[i]<<" ";   
            rep(i,1,k){
                if(x[i]==1){
                    update(1,1,m,y[i],z[i]);
                }
                else{
                    cout<<solve(y[i],z[i])<<'\n';
                }
            }
        }
    }
}

Compilation message

bridges.cpp: In function 'int main()':
bridges.cpp:22:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(ll i=a;i<=b;i++)
bridges.cpp:155:17:
             rep(i,0,vpl.size()-1){
                 ~~~~~~~~~~~~~~~~
bridges.cpp:155:13: note: in expansion of macro 'rep'
             rep(i,0,vpl.size()-1){
             ^~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 98 ms 197496 KB Output is correct
2 Correct 98 ms 197496 KB Output is correct
3 Correct 191 ms 197624 KB Output is correct
4 Correct 136 ms 197624 KB Output is correct
5 Correct 130 ms 197496 KB Output is correct
6 Correct 129 ms 197584 KB Output is correct
7 Correct 122 ms 197496 KB Output is correct
8 Correct 126 ms 197624 KB Output is correct
9 Correct 127 ms 197496 KB Output is correct
10 Correct 123 ms 197496 KB Output is correct
11 Correct 128 ms 197496 KB Output is correct
12 Correct 126 ms 197496 KB Output is correct
13 Correct 130 ms 197496 KB Output is correct
14 Correct 128 ms 197496 KB Output is correct
15 Correct 132 ms 197496 KB Output is correct
16 Correct 136 ms 197624 KB Output is correct
17 Correct 125 ms 197496 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 573 ms 202744 KB Output is correct
2 Correct 562 ms 205432 KB Output is correct
3 Correct 597 ms 205436 KB Output is correct
4 Correct 569 ms 205432 KB Output is correct
5 Correct 568 ms 205520 KB Output is correct
6 Correct 594 ms 205484 KB Output is correct
7 Correct 588 ms 205304 KB Output is correct
8 Correct 587 ms 205432 KB Output is correct
9 Correct 408 ms 199092 KB Output is correct
10 Correct 525 ms 204356 KB Output is correct
11 Correct 517 ms 204240 KB Output is correct
12 Correct 826 ms 205464 KB Output is correct
13 Correct 364 ms 205216 KB Output is correct

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 518 ms 201592 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 404 ms 209256 KB Output is correct
2 Correct 396 ms 197788 KB Output is correct
3 Correct 242 ms 203372 KB Output is correct
4 Correct 251 ms 203376 KB Output is correct
5 Correct 343 ms 209384 KB Output is correct
6 Correct 415 ms 209256 KB Output is correct
7 Correct 331 ms 209344 KB Output is correct
8 Correct 316 ms 208104 KB Output is correct
9 Correct 329 ms 208260 KB Output is correct
10 Correct 319 ms 208232 KB Output is correct
11 Correct 361 ms 208872 KB Output is correct
12 Correct 374 ms 208872 KB Output is correct
13 Correct 344 ms 208744 KB Output is correct
14 Correct 330 ms 209316 KB Output is correct
15 Correct 340 ms 209384 KB Output is correct
16 Correct 400 ms 209384 KB Output is correct
17 Correct 395 ms 209356 KB Output is correct
18 Correct 399 ms 209384 KB Output is correct
19 Correct 409 ms 209256 KB Output is correct
20 Correct 369 ms 208976 KB Output is correct
21 Correct 352 ms 209000 KB Output is correct
22 Correct 391 ms 209176 KB Output is correct
23 Correct 324 ms 208748 KB Output is correct

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 573 ms 202744 KB Output is correct
2 Correct 562 ms 205432 KB Output is correct
3 Correct 597 ms 205436 KB Output is correct
4 Correct 569 ms 205432 KB Output is correct
5 Correct 568 ms 205520 KB Output is correct
6 Correct 594 ms 205484 KB Output is correct
7 Correct 588 ms 205304 KB Output is correct
8 Correct 587 ms 205432 KB Output is correct
9 Correct 408 ms 199092 KB Output is correct
10 Correct 525 ms 204356 KB Output is correct
11 Correct 517 ms 204240 KB Output is correct
12 Correct 826 ms 205464 KB Output is correct
13 Correct 364 ms 205216 KB Output is correct
14 Incorrect 518 ms 201592 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 98 ms 197496 KB Output is correct
2 Correct 98 ms 197496 KB Output is correct
3 Correct 191 ms 197624 KB Output is correct
4 Correct 136 ms 197624 KB Output is correct
5 Correct 130 ms 197496 KB Output is correct
6 Correct 129 ms 197584 KB Output is correct
7 Correct 122 ms 197496 KB Output is correct
8 Correct 126 ms 197624 KB Output is correct
9 Correct 127 ms 197496 KB Output is correct
10 Correct 123 ms 197496 KB Output is correct
11 Correct 128 ms 197496 KB Output is correct
12 Correct 126 ms 197496 KB Output is correct
13 Correct 130 ms 197496 KB Output is correct
14 Correct 128 ms 197496 KB Output is correct
15 Correct 132 ms 197496 KB Output is correct
16 Correct 136 ms 197624 KB Output is correct
17 Correct 125 ms 197496 KB Output is correct
18 Correct 573 ms 202744 KB Output is correct
19 Correct 562 ms 205432 KB Output is correct
20 Correct 597 ms 205436 KB Output is correct
21 Correct 569 ms 205432 KB Output is correct
22 Correct 568 ms 205520 KB Output is correct
23 Correct 594 ms 205484 KB Output is correct
24 Correct 588 ms 205304 KB Output is correct
25 Correct 587 ms 205432 KB Output is correct
26 Correct 408 ms 199092 KB Output is correct
27 Correct 525 ms 204356 KB Output is correct
28 Correct 517 ms 204240 KB Output is correct
29 Correct 826 ms 205464 KB Output is correct
30 Correct 364 ms 205216 KB Output is correct
31 Incorrect 518 ms 201592 KB Output isn't correct
32 Halted 0 ms 0 KB -