oj.uz

Submission #721750

# Submission time Handle Problem Language Result Execution time Memory
721750 2023-04-11T07:02:45 Z victor_gao Street Lamps (APIO19_street_lamps) C++17
20 / 100
 222 ms 11364 KB 
//#pragma GCC optimize("Ofast,unroll-loops,O3")
//#pragma GCC optimize("avx,avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,fma,tune=native")
#include<bits/stdc++.h>
//#include<bits/extc++.h>
//#pragma pack(1)
#define fast ios::sync_with_stdio(0); cin.tie(0);
#define int long long
#define pii pair<int,int>
#define x first
#define y second
#define N 300015
using namespace std;
//using namespace __gnu_pbds;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//typedef tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update> order_multiset;
//typedef tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> order_set;
struct segtree{
    int seg[4*N];
    void change(int l,int r,int i,int p,int c){
        if (l==r){
            seg[i]=c;
            return;
        }
        int mid=(l+r)>>1;
        if (p<=mid) change(l,mid,2*i,p,c);
        else change(mid+1,r,2*i+1,p,c);
        seg[i]=max(seg[2*i],seg[2*i+1]);
    }
    int query(int l,int r,int i,int ll,int rr){
        if (ll<=l&&rr>=r) return seg[i];
        int mid=(l+r)>>1;
        if (rr<=mid) return query(l,mid,2*i,ll,rr);
        else if (ll>mid) return query(mid+1,r,2*i+1,ll,rr);
        else return max(query(l,mid,2*i,ll,rr),query(mid+1,r,2*i+1,ll,rr));
    }
}seg;
int n,q;
bool arr[N];
signed main(){
    fast
    cin>>n>>q;
    for (int i=1;i<=n;i++){
        char c; cin>>c;
        arr[i]=c-'0';
        if (arr[i])
            seg.change(1,n,1,i,0);
        else seg.change(1,n,1,i,1e9);
    }
    for (int t=1;t<=q;t++){
        string str; cin>>str;
        if (str=="toggle"){
            int p; cin>>p;
            arr[p]^=1;
            seg.change(1,n,1,p,t);
        }
        else {
            int l,r; cin>>l>>r;
            int last=seg.query(1,n,1,l,r-1);
            if (last>1e8) cout<<0<<'\n';
            else cout<<t-last<<'\n';
        }
    }
}

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 71 ms 784 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 288 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 141 ms 9172 KB Output is correct
6 Correct 176 ms 9528 KB Output is correct
7 Correct 212 ms 9768 KB Output is correct
8 Correct 209 ms 11348 KB Output is correct
9 Correct 74 ms 1740 KB Output is correct
10 Correct 89 ms 1772 KB Output is correct
11 Correct 81 ms 1964 KB Output is correct
12 Correct 222 ms 10060 KB Output is correct
13 Correct 213 ms 11364 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -