제출 #941658

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
941658		blacktulip	Deda (COCI17_deda)	C++17	140 / 140	93 ms	6348 KiB

deda

#include <bits/stdc++.h>

using namespace std;

typedef long long lo;

#define fi first
#define se second
#define endl "\n"
//~ #define int long long
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)
#define _ << " " <<

const lo inf = 1000000001;
const lo li = 200005;
const lo mod = 1000000007;

int n,m,k,flag,t,x[li],y[li],tree[li*4];
int cev;
char c[li];
string s;
vector<int> vec;
//~ set<int> st[li*2];

inline void update(int node,int start,int end,int l,int r,int x){
	if(start>end || start>r || end<l)return ;
	if(start>=l && end<=r){tree[node]=x;return ;}
	update(node*2,start,mid,l,r,x),update(node*2+1,mid+1,end,l,r,x);
	tree[node]=min(tree[node*2],tree[node*2+1]);
}

inline void query(int node,int start,int end,int b,int y){
	if(end<b)return ;
	if(tree[node]>y)return ;
	if(cev!=inf)return ;
	if(start==end){cev=start;return ;}
	query(node*2,start,mid,b,y),query(node*2+1,mid+1,end,b,y);
}

int main(void){
	fio();
	cin>>n>>t;
	for(int i=1;i<=t;i++){
		cin>>c[i]>>x[i]>>y[i];
	}
	FOR update(1,1,n,i,i,inf);
	for(int i=1;i<=t;i++){
		if(c[i]=='M'){
			update(1,1,n,y[i],y[i],x[i]);
		}
		else{
			cev=inf;
			query(1,1,n,y[i],x[i]);
			if(cev==inf)cev=-1;
			cout<<cev<<endl;
		}
	}
	return 0;
}

• Subtask 1: 140 / 140