Submission #332748

#	Time	Username	Problem	Language	Result	Execution time	Memory
332748		Bill_00	Simple game (IZhO17_game)	C++14	0 / 100	1 ms	364 KiB

game

#include <bits/stdc++.h>
#define MOD 1000000007
typedef long long ll;
using namespace std;
int a[100001];
int lazy[4000001],value[4000001];
void update(int id,int l,int r,int L,int R,int d){
	if(L>R) return;
	value[id]+=lazy[id];
	lazy[id*2]+=lazy[id];
	lazy[id*2+1]+=lazy[id];
	lazy[id]=0;
	if(l>R || L>r){
		return;
	}
	if(L<=l && r<=R){
		value[id]+=d;
		lazy[id*2]+=d;
		lazy[id*2+1]+=d;
		return;
	}
	int m=l+r>>1;
	update(id*2,l,m,L,R,d);
	update(id*2+1,m+1,r,L,R,d);
	value[id]=value[id*2]+value[id*2+1];
}
int query(int id,int l,int r,int L,int R){
	value[id]+=lazy[id];
	lazy[id*2]+=lazy[id];
	lazy[id*2+1]+=lazy[id];
	lazy[id]=0;
	if(l>R || L>r){
		return 0;
	}
	if(L<=l && r<=R){
		return value[id];
	}
	int m=l+r>>1;
	return query(id*2,l,m,L,R)+query(id*2+1,m+1,r,L,R);
}
int main() {
	ios_base::sync_with_stdio(NULL);
	cin.tie(NULL);
	cout.tie(NULL);
	int n,m;
	cin >> n >> m;
	for(int i=1;i<=n;i++){
		cin >> a[i];
	}
	for(int i=1;i<n;i++){
		update(1,1,n,min(a[i],a[i+1]),max(a[i],a[i+1]),1);
	}
	for(int i=1;i<=m;i++){
		int type;
		cin >> type;
		if(type==1){
			int pos,val;
			cin >> pos >> val;
			if(pos!=1){
				update(1,1,n,min(a[pos-1],a[pos]),max(a[pos-1],a[pos]),-1);
				update(1,1,n,min(a[pos-1],val),max(a[pos-1],val),1);
			}
			if(pos!=n){
				update(1,1,n,min(a[pos],a[pos+1]),max(a[pos],a[pos+1]),-1);
				update(1,1,n,min(a[pos+1],val),max(a[pos+1],val),1);
			}
			a[pos]=val;
		}
		else{
			int h;
			cin >> h;
			cout << query(1,1,n,h,h) << '\n';
		}
	}
}

Compilation message (stderr)

game.cpp: In function 'void update(int, int, int, int, int, int)':
game.cpp:22:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   22 |  int m=l+r>>1;
      |        ~^~
game.cpp: In function 'int query(int, int, int, int, int)':
game.cpp:38:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   38 |  int m=l+r>>1;
      |        ~^~

• Subtask 1: 0 / 22
• Subtask 2: 0 / 27
• Subtask 3: 0 / 51