Submission #480114

#	Time	Username	Problem	Language	Result	Execution time	Memory
480114		Ronin13	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	0 / 100	55 ms	16844 KiB

sortbooks

#include<bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define pll pair<ll,ll>
#define pii pair<int,int>
#define f first
#define s second
#define pb push_back
#define epb emplace back
#define inf 1e9+1
#define linf 1e18+1
using namespace std;

void solve(){
    int n,m;cin>>n>>m;
    int a[n+1];
    for(int i=1;i<=n;i++)cin>>a[i];
    if(n<=5000){
        int mx[n+1][n+1];
        for(int i=1;i<=n;i++){
            mx[i][i]=a[i];
            for(int j=i+1;j<=n;j++)mx[i][j]=max(mx[i][j-1],a[j]);
        }
        while(m--){
            int l,r,x;cin>>l>>r>>x;
            bool ind=true;
            for(int i=l+1;i<=r;i++){
                if(a[i]<mx[l][i-1]){
                    if(a[i]+mx[l][i-1]>x){
                        ind=false;
                    }
                }
            }
            if(ind)cout<<1<<"\n";
            else cout<<0<<"\n";
        }
        return;
    }
    vector<pii>aa,b;
    aa.pb({0,0});
    b.pb({0,0});
    int st;
    for(int i=2;i<=n;i++){
        if(a[i]!=a[i-1]){
            aa.pb({st,st});
            b.pb({i-1,st});
            st=i;
        }
    }
    aa.pb({st,st});
    b.pb({n,st});
    while(m--){
        int l,r,x;cin>>l>>r>>x;
        pii ss={l,-6},rr={r,-6};
        int ind=upper_bound(aa.begin(),aa.end(),ss)-aa.begin()-1;
        int ind1=lower_bound(b.begin(),b.end(),rr)-b.begin();
        if(aa[ind].s==b[ind1].s)cout<<1<<"\n";

        else cout<<0<<"\n";
    }
}

int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    freopen("in.in","r",stdin);freopen("out.out","w",stdout);
    int test=1;//cin>>test;
    while(test--){
        solve();
    }
}

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:65:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     freopen("in.in","r",stdin);freopen("out.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~
sortbooks.cpp:65:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     freopen("in.in","r",stdin);freopen("out.out","w",stdout);
      |                                ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

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