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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#749032 | #7787. Maximum Rating | podys | RE | 0ms | 15484kb | C++14 | 2.7kb | 2024-11-14 22:25:33 | 2024-11-14 22:25:39 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
int a[200005];
const int N=2e5+5;
class tre{
public:
vector<int> sum,ls,rs,ct;
// int sum[N * 2], ls[N * 2], rs[N * 2];
tre(){
sum=vector<int>(N*2);
ls=vector<int>(N*2);
rs=vector<int>(N*2);
ct=vector<int>(N*2);
}
// root 表示整棵线段树的根结点;cnt 表示当前结点个数
int cnt=0, root=0;
// 用法:update(root, 1, n, x, f); 其中 x 为待修改节点的编号
void update(int& p, int s, int t, int x, int f,int g) { // 引用传参
if (!p) p = ++cnt; // 当结点为空时,创建一个新的结点
if (s == t) {
sum[p] += f;
ct[p] += g;
return;
}
int m = s + ((t - s) >> 1);
if (x <= m)
update(ls[p], s, m, x, f,g);
else
update(rs[p], m + 1, t, x, f,g);
sum[p] = sum[ls[p]] + sum[rs[p]]; // pushup
ct[p] = ct[ls[p]] + ct[rs[p]]; // pushup
}
// 用法:query(root, 1, n, l, r);
int query(int p, int s, int t, int l, int r) {
if (!p) return 0; // 如果结点为空,返回 0
if (s >= l && t <= r) return sum[p];
int m = s + ((t - s) >> 1), ans = 0;
if (l <= m) ans += query(ls[p], s, m, l, r);
if (r > m) ans += query(rs[p], m + 1, t, l, r);
return ans;
}
int check(int p,int s,int t,int &now){
if (!p) return 0; // 如果结点为空,返回 0
if(s==t && now<=sum[p]){
int ret=now/(sum[p]/ct[p]);
now-=ret*sum[p];
return ret;
}
if(sum[p]<=now){
now-=sum[p];
return ct[p];
}
int m = s + ((t - s) >> 1), ans = 0;
ans+=check(ls[p],s,m,now);
ans+=check(rs[p],m+1,t,now);
return ans;
}
};
void solve(){
tre t1;
int n,q;
cin>>n>>q;
int sum=0;
for(int i=1;i<=n;i++){
cin>>a[i];
if(a[i]<=0){
sum-=a[i];
}else{
t1.update(t1.root, 1, n, a[i], a[i],1);
}
}
while(q--){
int x,v;
cin>>x>>v;
if(a[x]<=0){
sum+=a[x];
}else{
t1.update(t1.root, 1, n, a[x], -a[x],-1);
}
a[x]=v;
if(v<=0){
sum-=v;
}else{
t1.update(t1.root, 1, n, v, v,1);
}
int tmp=sum;
cout<<t1.check(t1.root,0,n,tmp)+1<<endl;
}
}
signed main(){
ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int t=1;
// cin>>t;
while(t--){
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 15484kb
input:
3 5 1 2 3 3 4 2 -2 1 -3 3 1 2 1
output:
1 2 2 2 3
result:
ok 5 number(s): "1 2 2 2 3"
Test #2:
score: -100
Runtime Error
input:
3 5 1 2 3 3 4 2 -2 1 3 3 1 2 1