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Submission #956939

# Submission time Handle Problem Language Result Execution time Memory
956939 2024-04-02T17:35:20 Z HoriaHaivas Street Lamps (APIO19_street_lamps) C++14
100 / 100
 2621 ms 153440 KB 
/*
    "care a facut teste cu Lattice reduction attack e ciudat"
    "linistiti va putin"
    - 2023 -
*/
#include<bits/stdc++.h>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
#pragma GCC optimize("Ofast")
 
using namespace std;
 
struct event
{
    int x;
    int y;
    int moment;
};
 
int mom,n;
bool state[300005];
bool initialstate[300005];
bool type[300005];
int l[300005];
int r[300005];
int pos[300005];
int altaib[300005];
vector<event> updates;
vector<int> vals[300005];
vector<int> aib[300005];
 
void altupdate(int index, int delta)
{
    while (index<=n)
    {
        altaib[index]+=delta;
        index+=index&(-index);
    }
}
 
int altquery(int index)
{
    int ans;
    ans=0;
    while (index>0)
    {
        ans+=altaib[index];
        index-=index&(-index);
    }
    return ans;
}
 
void setupdate(int x, int y)
{
    for (; x<=n; x+=x&(-x))
    {
        vals[x].push_back(y);
    }
}
 
void updatinho(int apos)
{
    int st,dr;
    st=apos-1;
    while (st>0 && state[st]==1)
    {
        st--;
    }
    st++;
    dr=apos+1;
    while (dr<n+1 && state[dr]==1)
    {
        dr++;
    }
    dr--;
    setupdate(st,apos);
    updates.push_back({st,apos,mom});
    setupdate(apos+1,apos);
    updates.push_back({apos+1,apos,mom});
    setupdate(st,dr+1);
    updates.push_back({st,dr+1,mom});
    setupdate(apos+1,dr+1);
    updates.push_back({apos+1,dr+1,mom});
}
 
int indice(int x, int y)
{
    return upper_bound(vals[x].begin(),vals[x].end(),y)-vals[x].begin()-1;
}
 
void update(int x, int y, int delta)
{
    int newy;
    for (; x<=n; x+=x&(-x))
    {
        newy=indice(x,y);
        for (; newy<=aib[x].size(); newy+=newy&(-newy))
        {
            aib[x][newy]+=delta;
        }
    }
}
 
int query(int x, int y)
{
    int ans,newy;
    ans=0;
    for (; x>0; x-=x&(-x))
    {
        newy=indice(x,y);
        for (; newy>0; newy-=newy&(-newy))
        {
            ans+=aib[x][newy];
        }
    }
    return ans;
}
 
signed main()
{
    ifstream fin("secvp.in");
    ofstream fout("secvp.out");
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    long long q,i,j,cnt;
    char ch;
    string s;
    cin >> n >> q;
    for (i=1; i<=n; i++)
    {
        cin >> ch;
        if (ch=='0')
            state[i]=0;
        else
            state[i]=1;
        if (state[i]==1)
            altupdate(i,1);
        initialstate[i]=state[i];
    }
    for (i=1; i<=q; i++)
    {
        cin >> s;
        if (s=="query")
            type[i]=1;
        else
            type[i]=0;
        if (type[i]==1)
        {
            cin >> l[i] >> r[i];
        }
        else
        {
            cin >> pos[i];
            mom=i;
            updatinho(pos[i]);
            state[pos[i]]=1-state[pos[i]];
        }
    }
    for (i=1; i<=n+1; i++)
    {
        vals[i].push_back(0);
        sort(vals[i].begin(),vals[i].end());
        aib[i].resize(vals[i].size());
        state[i]=initialstate[i];
    }
    cnt=0;
    for (i=1; i<=q; i++)
    {
        if (type[i]==1)
        {
            if (altquery(r[i]-1)-altquery(l[i]-1)==(r[i]-l[i]))
                cout << i+query(l[i],r[i]-1) << "\n";
            else
                cout << query(l[i],r[i]-1) << "\n";
        }
        else
        {
            if (state[pos[i]]==1)
            {
                update(updates[cnt].x,updates[cnt].y,updates[cnt].moment);
                cnt++;
                update(updates[cnt].x,updates[cnt].y,-updates[cnt].moment);
                cnt++;
                update(updates[cnt].x,updates[cnt].y,-updates[cnt].moment);
                cnt++;
                update(updates[cnt].x,updates[cnt].y,updates[cnt].moment);
                cnt++;
                altupdate(pos[i],-1);
            }
            else
            {
                update(updates[cnt].x,updates[cnt].y,-updates[cnt].moment);
                cnt++;
                update(updates[cnt].x,updates[cnt].y,updates[cnt].moment);
                cnt++;
                update(updates[cnt].x,updates[cnt].y,updates[cnt].moment);
                cnt++;
                update(updates[cnt].x,updates[cnt].y,-updates[cnt].moment);
                cnt++;
                altupdate(pos[i],1);
            }
            state[pos[i]]=1-state[pos[i]];
        }
    }
}

Compilation message

street_lamps.cpp: In function 'void update(int, int, int)':
street_lamps.cpp:97:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   97 |         for (; newy<=aib[x].size(); newy+=newy&(-newy))
      |                ~~~~^~~~~~~~~~~~~~~
street_lamps.cpp: In function 'int main()':
street_lamps.cpp:126:19: warning: unused variable 'j' [-Wunused-variable]
  126 |     long long q,i,j,cnt;
      |                   ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 19036 KB Output is correct
2 Correct 5 ms 19036 KB Output is correct
3 Correct 4 ms 19036 KB Output is correct
4 Correct 4 ms 19036 KB Output is correct
5 Correct 5 ms 19036 KB Output is correct
6 Correct 4 ms 19036 KB Output is correct
7 Correct 4 ms 19036 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 473 ms 47848 KB Output is correct
2 Correct 627 ms 51300 KB Output is correct
3 Correct 991 ms 63140 KB Output is correct
4 Correct 1598 ms 100512 KB Output is correct
5 Correct 1276 ms 86304 KB Output is correct
6 Correct 1604 ms 112152 KB Output is correct
7 Correct 184 ms 43292 KB Output is correct
8 Correct 182 ms 44188 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 19292 KB Output is correct
2 Correct 6 ms 19292 KB Output is correct
3 Correct 5 ms 19292 KB Output is correct
4 Correct 4 ms 19112 KB Output is correct
5 Correct 2589 ms 150176 KB Output is correct
6 Correct 1937 ms 121380 KB Output is correct
7 Correct 1224 ms 85136 KB Output is correct
8 Correct 226 ms 44228 KB Output is correct
9 Correct 67 ms 21668 KB Output is correct
10 Correct 97 ms 22076 KB Output is correct
11 Correct 101 ms 21932 KB Output is correct
12 Correct 196 ms 42692 KB Output is correct
13 Correct 223 ms 43996 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 19036 KB Output is correct
2 Correct 5 ms 19268 KB Output is correct
3 Correct 6 ms 19292 KB Output is correct
4 Correct 7 ms 19292 KB Output is correct
5 Correct 272 ms 43700 KB Output is correct
6 Correct 919 ms 77052 KB Output is correct
7 Correct 1593 ms 113428 KB Output is correct
8 Correct 2621 ms 153440 KB Output is correct
9 Correct 853 ms 75752 KB Output is correct
10 Correct 868 ms 75240 KB Output is correct
11 Correct 830 ms 75240 KB Output is correct
12 Correct 835 ms 76572 KB Output is correct
13 Correct 818 ms 76116 KB Output is correct
14 Correct 863 ms 74944 KB Output is correct
15 Correct 172 ms 42776 KB Output is correct
16 Correct 178 ms 44116 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 19036 KB Output is correct
2 Correct 5 ms 19036 KB Output is correct
3 Correct 4 ms 19036 KB Output is correct
4 Correct 4 ms 19036 KB Output is correct
5 Correct 5 ms 19036 KB Output is correct
6 Correct 4 ms 19036 KB Output is correct
7 Correct 4 ms 19036 KB Output is correct
8 Correct 473 ms 47848 KB Output is correct
9 Correct 627 ms 51300 KB Output is correct
10 Correct 991 ms 63140 KB Output is correct
11 Correct 1598 ms 100512 KB Output is correct
12 Correct 1276 ms 86304 KB Output is correct
13 Correct 1604 ms 112152 KB Output is correct
14 Correct 184 ms 43292 KB Output is correct
15 Correct 182 ms 44188 KB Output is correct
16 Correct 6 ms 19292 KB Output is correct
17 Correct 6 ms 19292 KB Output is correct
18 Correct 5 ms 19292 KB Output is correct
19 Correct 4 ms 19112 KB Output is correct
20 Correct 2589 ms 150176 KB Output is correct
21 Correct 1937 ms 121380 KB Output is correct
22 Correct 1224 ms 85136 KB Output is correct
23 Correct 226 ms 44228 KB Output is correct
24 Correct 67 ms 21668 KB Output is correct
25 Correct 97 ms 22076 KB Output is correct
26 Correct 101 ms 21932 KB Output is correct
27 Correct 196 ms 42692 KB Output is correct
28 Correct 223 ms 43996 KB Output is correct
29 Correct 6 ms 19036 KB Output is correct
30 Correct 5 ms 19268 KB Output is correct
31 Correct 6 ms 19292 KB Output is correct
32 Correct 7 ms 19292 KB Output is correct
33 Correct 272 ms 43700 KB Output is correct
34 Correct 919 ms 77052 KB Output is correct
35 Correct 1593 ms 113428 KB Output is correct
36 Correct 2621 ms 153440 KB Output is correct
37 Correct 853 ms 75752 KB Output is correct
38 Correct 868 ms 75240 KB Output is correct
39 Correct 830 ms 75240 KB Output is correct
40 Correct 835 ms 76572 KB Output is correct
41 Correct 818 ms 76116 KB Output is correct
42 Correct 863 ms 74944 KB Output is correct
43 Correct 172 ms 42776 KB Output is correct
44 Correct 178 ms 44116 KB Output is correct
45 Correct 121 ms 33784 KB Output is correct
46 Correct 283 ms 37588 KB Output is correct
47 Correct 753 ms 62908 KB Output is correct
48 Correct 1395 ms 99712 KB Output is correct
49 Correct 73 ms 22244 KB Output is correct
50 Correct 78 ms 22248 KB Output is correct
51 Correct 77 ms 22096 KB Output is correct
52 Correct 74 ms 22456 KB Output is correct
53 Correct 72 ms 22352 KB Output is correct
54 Correct 74 ms 22460 KB Output is correct