Submission #1092922

#	Time	Username	Problem	Language	Result	Execution time	Memory
1092922		ByeWorld	RMQ (NOI17_rmq)	C++14	0 / 100	2 ms	2648 KiB

rmq

#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#define int long long
#define ll long long
#define pb push_back
#define fi first
#define se second
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
using namespace std;
typedef pair<int,int> pii;
typedef pair<pii,int> ipii;
const int MAXN = 1e5+15;
const int INF = 1e18+10;
const int MOD = 998244353;
const int LOG = 32;

int n, m;
int ans[MAXN], done[MAXN], ri[MAXN];
vector <ipii> vec;
vector <int> add[MAXN];
multiset <int> s;
bool aman = 1;

signed main(){
    // ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n >> m;
    for(int i=1; i<=m; i++){
        int l, r, mn; cin >>l>>r>>mn;
        l++; r++; mn++;
        vec.pb({{l,r}, mn});
        add[l].pb(mn); add[r+1].pb(-mn);
    }

    for(int i=1; i<=n; i++){
        for(auto in : add[i]){
            if(in < 0) s.erase(s.find(-in));
            else s.insert(in);
        }
        if(!s.empty()){
            ans[i] = *(--s.end());
            done[ans[i]] = 1; ri[ans[i]] = i;
        }
    }
    for(int i=1; i<=n; i++){
        if(done[i]) continue;

        for(int j=1; j<=n; j++){
            if(ans[j] == 0){
                ans[j] = i; ri[i] = j;
                continue;
            }

            if(ri[ans[j]] == j) continue;
            ans[j] = i; ri[i] = j;
        }
    }

    for(int i=0; i<m; i++){
        int l=vec[i].fi.fi, r=vec[i].fi.se, mn = vec[i].se;
        int val = ans[l];
        for(int j=l+1; j<=r; j++) val = min(val, ans[j]);
        if(val != mn) aman = 0;
    }
    if(!aman){
        for(int i=1; i<=n; i++) cout << "-1 ";
        cout << '\n';
    } else {
        for(int i=1; i<=n; i++) cout << ans[i]-1 << ' ';
        cout << '\n';
    }
}

• Subtask 1: 0 / 23
• Subtask 2: 0 / 44
• Subtask 3: 0 / 33