Submission #1091106

#	Time	Username	Problem	Language	Result	Execution time	Memory
1091106		ThylOne	Meteors (POI11_met)	C++14	0 / 100	963 ms	40524 KiB

met

//####################
//Meteors
//####################
#include<bits/stdc++.h>

#define int long long 
using namespace std;
using ll = long long;
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.begin(), x.end()
int nbState,nbPlanet;
const int maxiState = 300002;
int attempt[maxiState];
vector<int> representant[maxiState];
int nbMeteor;
const int maxiMeteor = 300002;
struct meteor{
    int l,r;
    ll a;
};
meteor meteors[maxiMeteor];
#define LSONE(x) (x&(-x))
struct fenwick{
    vector<ll> val;
    fenwick(int n){
        val.resize(n+2);
        fill(all(val),0);
    }
    void update(int pos, ll v){
        while(pos<val.size()){
            val[pos] += v;
            pos += LSONE(pos);
        }
    }
    ll rsq(int i){
        ll re = 0;
        while(i){
            re += val[i];
            i -= LSONE(i);
        }
        return re;
    }
    ll rsq(int i,int j){
        return rsq(j) - rsq(i - 1);
    }
    void ruq(int i,int j, ll a){
        update(i, a);
        update(j+1,-a);
    }
};
int mid(pair<int,int> a){
    return (a.first+a.second)/2;
}
void solve(){
    pair<int,int> ranges[nbState];
    fill(ranges,ranges+nbState,make_pair(1,nbMeteor+1));
    const int LOG = 20;
    for(int l = 0; l < LOG; l++){
        vector<int> req[nbMeteor+2];
        for(int i=0;i<nbState;i++){
            if(ranges[i].first!=ranges[i].second)
                req[mid(ranges[i])].pb(i);
        }
        fenwick ft(nbPlanet);
        for(int t = 1; t<= nbMeteor; t++){
            meteor &met = meteors[t - 1];
            //application de la météorite
            if(met.l<met.r){
                ft.ruq(met.l,met.r,met.a);
            }else{
                ft.ruq(1,met.r,met.a);
                ft.ruq(met.l,nbPlanet,met.a);
            }

            for(int r:req[t]){
                
                ll tot = 0;
                for(int repr:representant[r])tot+=ft.rsq(repr);
                if(tot>=attempt[r]){
                    ranges[r].second=mid(ranges[r]);
                }else{
                    ranges[r].first = mid(ranges[r])+1;
                }
            }
        }
    }
    for(int i = 0; i < nbState ; i++){
        if(ranges[i].first!=ranges[i].second){
            cerr<<"errror system merde..."<<endl;
        }else{
            cout<<(ranges[i].second==nbMeteor+1?"NIE":to_string(ranges[i].second))<<'\n';
        }
    }
}
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>nbState>>nbPlanet;
    for(int i = 0; i<nbPlanet;i++){
        int v;cin>>v;
        v--;
        representant[v].pb(i+1);
    }
    for(int i= 0;i<nbState;i++)
        cin>>attempt[i];

    cin>>nbMeteor;
    for(int i = 0; i< nbMeteor ; i++){
        cin>>meteors[i].l>>meteors[i].r>>meteors[i].a;
    }
    solve();

    return 0;
};

Compilation message (stderr)

met.cpp: In member function 'void fenwick::update(long long int, ll)':
met.cpp:31:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |         while(pos<val.size()){
      |               ~~~^~~~~~~~~~~

• Subtask 1: 0 / 12
• Subtask 2: 0 / 12
• Subtask 3: 0 / 12
• Subtask 4: 0 / 12
• Subtask 5: 0 / 13
• Subtask 6: 0 / 13
• Subtask 7: 0 / 13
• Subtask 8: 0 / 13