제출 #508333

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
508333		Belgutei	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	30 / 100	1116 ms	59404 KiB

sortbooks

#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define ff first
#define ss second
#define pb push_back
#define mk make_pair
#define IOS ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

ll n,m;
ll a[1000005];
ll l,r,k;
vector<ll> v[30];
ll level,zereg[30];
ll cnt;

void dfs(int p, int x){
    int y=zereg[level-p]*x;
    int z=zereg[level-p]*(x+1)-1;
    if(l<=y && z<=r){
        cnt+=v[p][x];
        return;
    }
    if(z<l || y>r || p==level) return;
    dfs(p+1,x*2);
    dfs(p+1,x*2+1);
}

int main(){
    IOS
    cin>>n>>m;
    for(int i=1; i<=n; i++){
        cin>>a[i];
    }
    zereg[0]=1;
    for(int i=0; i<=30; i++){
        if(zereg[i]>=n){
            level=i;
            break;
        }
        zereg[i+1]=zereg[i]*2;
    }
    for(int i=0; i<zereg[level]; i++){
        v[level].pb(0);
    }
    for(int i=2; i<=n; i++){
        if(a[i-1]>a[i]){
            v[level][i-1]=1;
        }
    }
    if(n<=5000){
        while(m--){
            cin>>l>>r>>k;
            ll mx=a[l];
            ll mn=a[l];
            bool ok=1;
            for(int i=l+1; i<=r; i++){
                if(mx>a[i]){
                    if(mx+a[i]>k){
                        ok=0;
                        break;
                    }
                }
                if(mn>a[i]){
                    if(mn+a[i]>k){
                        ok=0;
                        break;
                    }
                }
                mx=max(mx,a[i]);
                mn=min(mn,a[i]);
            }
            cout<<ok<<'\n';
        }
        return 0;
    }
    for(int i=level-1; i>=0; i--){
        for(int j=1; j<v[i+1].size(); j+=2){
            v[i].pb(v[i+1][j]+v[i+1][j-1]);
        }
    }
    while(m--){
        cin>>l>>r>>k;
        if(l==r){
            cout<<"1\n";
            continue;
        }
        r--;
        cnt=0;
        dfs(0,0);
        if(cnt==0) cout<<"1\n";
        else cout<<"0\n";
    }
}

컴파일 시 표준 에러 (stderr) 메시지

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:80:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |         for(int j=1; j<v[i+1].size(); j+=2){
      |                      ~^~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 13 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23