oj.uz

답안 #938889

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
938889 2024-03-05T18:48:03 Z Andreibatman 가로등 (APIO19_street_lamps) C++17
20 / 100
 305 ms 22100 KB 
#include <bits/stdc++.h>
using namespace std;
int n,q,i,j,ok,x,y,lazy[1200010];
char sir[300010],op[30];
struct ceva
{
    int mini,cnt;
    ceva operator +(const ceva &x)
    {
        ceva y;
        y.mini=min(x.mini,mini);
        y.cnt=x.cnt+cnt;
        return y;
    }
    bool operator ==(const ceva &x)
    {
        return mini==x.mini && cnt==x.cnt;
    }
}tree[1200010],zero;
void propag(int left,int right,int node)
{
    int mij=(left+right)/2;

    if(tree[2*node].cnt==mij-left+1)
        tree[2*node].mini+=lazy[node];
    if(tree[2*node+1].cnt==right-mij)
        tree[2*node+1].mini+=lazy[node];

    lazy[2*node]+=lazy[node];
    lazy[2*node+1]+=lazy[node];
    lazy[node]=0;
}
void updatelight(int node,int left,int right,int poz,int val)
{
    if(left!=right && lazy[node])
        propag(left,right,node);
    if(left==right)
    {
        if(val==1)
        {
            sir[left]='1';
            tree[node].cnt=1;
        }
        else
        {
            tree[node].cnt=0;
            sir[left]='0';
        }
        return;
    }
    int mij=(left+right)/2;
    if(poz<=mij)
        updatelight(2*node,left,mij,poz,val);
    else
        updatelight(2*node+1,mij+1,right,poz,val);
    int mij2=tree[node].mini;
    tree[node]=tree[2*node]+tree[2*node+1];
    tree[node].mini=max(tree[node].mini,mij2);
}
void updateval()
{
    if(tree[1].cnt==n)
        tree[1].mini++;
    lazy[1]++;
}
ceva query(int node,int left,int right,int st,int dr)
{
    if(left!=right && lazy[node])
        propag(left,right,node);
    if(st<=left && right<=dr)
    {
        if(tree[node].cnt!=right-left+1)
            return zero;
        return tree[node];
    }
    int mij=(left+right)/2;
    ceva ans1=zero,ans2=zero;
    if(st<=mij && mij>=dr)
        return query(2*node,left,mij,st,dr);
    else if(st>mij && mij<dr)
        return query(2*node+1,mij+1,right,st,dr);
    else if(st<=mij && mij<dr)
    {
        ans1=query(2*node,left,mij,st,dr);
        ans2=query(2*node+1,mij+1,right,st,dr);
        if(ans1==zero || ans2==zero)
            return zero;
        return ans1+ans2;
    }
    return zero;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>q>>(sir+1);
    for(i=1;i<=n;i++)
        updatelight(1,1,n,i,sir[i]-'0');
    updateval();
    while(q--)
    {
        cin>>op>>x;
        if(op[0]=='t')
        {
            /*if(sir[x]=='0')
                sir[x]='1';
            else
                sir[x]='0';*/
            updatelight(1,1,n,x,1-sir[x]+'0');
        }
        else
        {
            cin>>y;
            cout<<query(1,1,n,x,y-1).mini<<'\n';
        }
        updateval();
    }
    return 0;
}

Subtask #1
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 73 ms 6120 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 2 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 171 ms 18340 KB Output is correct
6 Correct 221 ms 19184 KB Output is correct
7 Correct 278 ms 19772 KB Output is correct
8 Correct 305 ms 22044 KB Output is correct
9 Correct 77 ms 5968 KB Output is correct
10 Correct 83 ms 6228 KB Output is correct
11 Correct 87 ms 6484 KB Output is correct
12 Correct 272 ms 20820 KB Output is correct
13 Correct 274 ms 22100 KB Output is correct

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2396 KB Output is correct
2 Incorrect 1 ms 2520 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -