Submission #409387

#	Time	Username	Problem	Language	Result	Execution time	Memory
409387		Blistering_Barnacles	Bridges (APIO19_bridges)	C++11	0 / 100	553 ms	1720 KiB

bridges

//apig's property
//Happiness can be found, even in the darkest of times, if one only remembers to turn on the light
//El Pueblo Unido Jamas Sera Vencido
//The saddest thing about betrayal? is that it never comes from your enemies
//Do or do not... there is no try
//Billions of bilious blue blistering barnacles in a thundering typhoon!
#include<bits/stdc++.h>
#define fast ios_base::sync_with_stdio(0) , cin.tie(0) , cout.tie(0)
#define F first
#define S second
#define pb push_back
#define vll vector< ll >
#define vi vector< int >
#define pll pair< ll , ll >
#define pi pair< int , int >
#define all(s) s.begin() , s.end()
#define sz(s) s.size()
#define str string
#define md ((s + e) / 2)
#define mid ((l + r) / 2)
#define msdp(dp) memset(dp , -1 , sizeof dp)
#define mscl(dp) memset(dp , 0 , sizeof dp)
#define C continue
#define R return
#define B break
#define lx node * 2
#define rx node * 2 + 1
#define br(o) o ; break
#define co(o) o ; continue
using namespace std;
typedef int ll;
ll q,  a[55555] ,  k, l, m, n, o, p;
const ll mod = 1e9+7;
str s;
ll tree[50000 * 4 + 16] ;
void build(ll s,  ll e , ll node){
    if(s == e){
        tree[node] = a[s] ;
        R ;
    }
    build(s , md , lx) , build(md + 1 , e , rx) ;
    tree[node] = min(tree[lx] , tree[rx]) ;
}
void update(ll s , ll e , ll node , ll idx , ll val){
    if(s > idx || e < idx)R ;
    if(s == e){
        tree[node] = val ;
        R ;
    }
    update(s , md , lx , idx , val) , update(md + 1 , e , rx , idx , val) ;
    tree[node] = min(tree[lx] , tree[rx]) ;
}
ll query(ll s , ll e , ll node , ll l , ll r){
    if(r < l || s > r || e < l)R mod ;
    if(l <= s && e <= r)R tree[node] ;
    R min(query(s , md , lx , l , r) , query(md + 1 , e , rx , l , r)) ;
}
ll op(ll l , ll r){
    if(r - 2 >= m || l - 1 >= m)R 0 ;
    if(l < 0 || r < 0)R 0 ;
    if(l > r - 1)R 0 ;
    R query(0 , m - 1 , 1 , l , r - 1) ;
}
void solve(){
    cin >> n >> m ;
    for(ll i = 0 ; i < m ; i++){
        cin >> o >> p >> a[i] ;
    }
    build(0 , m - 1 , 1 ) ;
    ll kk ;
    cin >> kk ;
    while(kk--){
        cin >> k ;
        if(k == 1){
            cin >> o >> p ;
            update(0 , m - 1 , 1 , o - 1 , p) ;
        }
        else {
            cin >> o >> p ;
            ll l = 1 , r = o - 1;
            ll o1 = o , o2 = o ;
            while(l <= r){
                if(op(mid , o) >= p)o1 = mid , r = mid - 1 ;
                else l = mid + 1;
            }
            l = o + 1 , r = n ;
            while(l <= r){
                if(op(o , mid) >= p)o2 = mid , l = mid + 1 ;
                else r = mid - 1 ;
            }
            cout << o2 - o1 + 1 << endl ;
        }
    }
}
int main(){
    fast ;
    //cin >> q;
    q = 1;
    while(q--){
        solve();
    }
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 16
• Subtask 3: 0 / 17
• Subtask 4: 0 / 14
• Subtask 5: 0 / 13
• Subtask 6: 0 / 27