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Submission #1018109

# Submission time Handle Problem Language Result Execution time Memory
1018109 2024-07-09T14:30:40 Z bachhoangxuan Modern Machine (JOI23_ho_t5) C++17
62 / 100
 3000 ms 244028 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define mpp make_pair
#define fi first
#define se second
const int maxn = 120005;
const int LOG = 18;

int f(int x){
    return (x?32-__builtin_clz(x):0);
}
int n,m,q,a[maxn];
char s[maxn];

vector<pii> T[4*maxn];
void build(int l,int r,int id){
    if(l==r){
        int x=a[l];
        if(x==n) T[id]={{n-1,0},{n,-1}};
        else if(n-x-1<x-1) T[id]={{n-x-1,x+1},{x-1,x-n},{n,x-n-1}};
        else T[id]={{x-1,x+1},{n-x,x},{n,x-n-1}};
        return;
    }
    int mid=(l+r)>>1;
    build(l,mid,id<<1);build(mid+1,r,id<<1|1);
    int lt=0;
    for(auto [rt,val]:T[id<<1]){
        int pl=lower_bound(T[id<<1|1].begin(),T[id<<1|1].end(),mpp(lt+val,INT_MIN))-T[id<<1|1].begin();
        int pr=lower_bound(T[id<<1|1].begin(),T[id<<1|1].end(),mpp(rt+val,INT_MIN))-T[id<<1|1].begin();
        for(int i=pl;i<=pr;i++){
            auto [lst,nval]=T[id<<1|1][i];
            int pos=min(lst-val,rt);
            T[id].push_back({pos,val+nval});
        }
        lt=rt+1;
    }
}
int query(int l,int r,int id,int tl,int tr,int t){
    if(tr<l || r<tl) return t;
    if(tl<=l && r<=tr){
        auto it=lower_bound(T[id].begin(),T[id].end(),mpp(t,INT_MIN));
        return t+it->se;
    }
    int mid=(l+r)>>1;
    return query(mid+1,r,id<<1|1,tl,tr,query(l,mid,id<<1,tl,tr,t));
}



int nxt[LOG][LOG][maxn],cnt[maxn];
ll ca[LOG][maxn],cb[LOG][maxn];
int pa[maxn],sa,pb[maxn],sb;

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    cin >> n >> m;
    for(int i=1;i<=n;i++) cin >> s[i];
    for(int i=1;i<=m;i++) cin >> a[i];
    for(int i=1;i<=n+1;i++) if(s[i]!='R') pa[++sa]=i-1;
    for(int i=n;i>=0;i--) if(s[i]!='B') pb[++sb]=n-i;
    for(int i=1;i<=n;i++) cnt[i]=cnt[i-1]+(s[i]=='B');
    for(int x=0;x<LOG;x++){
        int X=(x?(1<<(x-1)):0);
        for(int y=0;y<LOG;y++){
            int Y=(y?(1<<(y-1)):0);
            nxt[x][y][m+1]=m+1;
            for(int i=m;i>=1;i--) nxt[x][y][i]=(X<a[i] || a[i]<=n-Y)?i:nxt[x][y][i+1];
        }
        for(int i=1;i<=m;i++){
            ca[x][i]=(a[i]<=X?a[i]:0)+ca[x][i-1];
            cb[x][i]=(a[i]>n-X?n-a[i]:0)+cb[x][i-1];
        }
    }
    build(1,m,1);
    cin >> q;
    for(int i=1;i<=q;i++){
        int l,r;cin >> l >> r;
        int ta=1,tb=1,t=-1;
        while(true){
            auto g = [&](int x){
                if(x<=pa[ta]) return 0;
                else if(x>n-pb[tb]) return 1;
                else return (int)(s[x]=='B');
            };
            int xa=f(pa[ta]),xb=f(pb[tb]);
            int i=min(nxt[xa][xb][l],r+1);
            int da=min(ca[xa][i-1]-ca[xa][l-1],1LL*n);
            int db=min(cb[xb][i-1]-cb[xb][l-1],1LL*n);
            //cout << i << ' ' << da << ' ' << db << ' ' << pa[ta] << ' ' << pb[tb] << '\n';
            if(pa[min(sa,ta+da)]+pb[min(sb,tb+db)]<n){
                ta+=da,tb+=db;
                if(i==r+1) break;
                int bc=cnt[n-pb[tb]]-cnt[pa[ta]]+pb[tb],x=a[i]+g(a[i]);
                //cout << x << ' ' << bc << '\n';
                if(x<=bc){
                    if(x>=bc-pb[tb]){t=n-bc+x,l=i+1;break;}
                    else ta+=x;
                }
                else{
                    x=n-a[i]+(g(a[i])^1);
                    if(x>=n-bc-pa[ta]){
                        t=n-bc-x,l=i+1;
                        break;
                    }
                    else tb+=x;
                }
            }
            else{
                int lt=l,rt=i-1;
                while(lt<rt){
                    int mid=(lt+rt)>>1;
                    int da=min(ca[xa][mid]-ca[xa][l-1],1LL*n);
                    int db=min(cb[xb][mid]-cb[xb][l-1],1LL*n);
                    if(pa[min(sa,ta+da)]+pb[min(sb,tb+db)]<n) lt=mid+1;
                    else rt=mid;
                }
                int da=min(ca[xa][lt-1]-ca[xa][l-1],1LL*n);
                int db=min(cb[xb][lt-1]-cb[xb][l-1],1LL*n);
                ta+=da;tb+=db;l=lt+1;
                int bc=cnt[n-pb[tb]]-cnt[pa[ta]]+pb[tb],x=a[i]+g(a[i]);
                if(x<=bc) t=n-bc+x;
                else t=n-bc-(n-a[i]+(g(a[i])^1));
                break;
            }
            l=i+1;
        }
        //cout << t << ' ' << pb[tb] << ' ' << pa[ta] << '\n';
        if(t==-1) cout << n-pb[tb]-(cnt[n-pb[tb]]-cnt[pa[ta]]) << '\n';
        else cout << query(1,m,1,l,r,t) << '\n';
    }
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 38748 KB Output is correct
2 Correct 5 ms 36700 KB Output is correct
3 Correct 5 ms 36700 KB Output is correct
4 Correct 5 ms 38744 KB Output is correct
5 Correct 5 ms 36700 KB Output is correct
6 Correct 5 ms 36696 KB Output is correct
7 Correct 5 ms 39364 KB Output is correct
8 Correct 5 ms 37212 KB Output is correct
9 Correct 5 ms 36700 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 38748 KB Output is correct
2 Correct 5 ms 36700 KB Output is correct
3 Correct 5 ms 36700 KB Output is correct
4 Correct 5 ms 38744 KB Output is correct
5 Correct 5 ms 36700 KB Output is correct
6 Correct 5 ms 36696 KB Output is correct
7 Correct 5 ms 39364 KB Output is correct
8 Correct 5 ms 37212 KB Output is correct
9 Correct 5 ms 36700 KB Output is correct
10 Correct 19 ms 49352 KB Output is correct
11 Correct 19 ms 48176 KB Output is correct
12 Correct 19 ms 48472 KB Output is correct
13 Correct 12 ms 48732 KB Output is correct
14 Correct 14 ms 48184 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 38748 KB Output is correct
2 Correct 5 ms 36700 KB Output is correct
3 Correct 5 ms 36700 KB Output is correct
4 Correct 5 ms 38744 KB Output is correct
5 Correct 5 ms 36700 KB Output is correct
6 Correct 5 ms 36696 KB Output is correct
7 Correct 5 ms 39364 KB Output is correct
8 Correct 5 ms 37212 KB Output is correct
9 Correct 5 ms 36700 KB Output is correct
10 Correct 19 ms 49352 KB Output is correct
11 Correct 19 ms 48176 KB Output is correct
12 Correct 19 ms 48472 KB Output is correct
13 Correct 12 ms 48732 KB Output is correct
14 Correct 14 ms 48184 KB Output is correct
15 Correct 5 ms 38744 KB Output is correct
16 Correct 5 ms 36696 KB Output is correct
17 Correct 6 ms 36696 KB Output is correct
18 Correct 294 ms 218256 KB Output is correct
19 Correct 282 ms 229072 KB Output is correct
20 Correct 298 ms 241352 KB Output is correct
21 Correct 285 ms 241608 KB Output is correct
22 Correct 307 ms 235324 KB Output is correct
23 Correct 179 ms 232104 KB Output is correct
24 Correct 173 ms 234440 KB Output is correct
25 Correct 186 ms 234444 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 36696 KB Output is correct
2 Correct 250 ms 213736 KB Output is correct
3 Correct 289 ms 214116 KB Output is correct
4 Correct 203 ms 207884 KB Output is correct
5 Correct 206 ms 213708 KB Output is correct
6 Correct 225 ms 214380 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 36696 KB Output is correct
2 Correct 250 ms 213736 KB Output is correct
3 Correct 289 ms 214116 KB Output is correct
4 Correct 203 ms 207884 KB Output is correct
5 Correct 206 ms 213708 KB Output is correct
6 Correct 225 ms 214380 KB Output is correct
7 Correct 5 ms 36700 KB Output is correct
8 Correct 4 ms 36700 KB Output is correct
9 Correct 5 ms 37212 KB Output is correct
10 Correct 13 ms 48912 KB Output is correct
11 Correct 545 ms 244028 KB Output is correct
12 Correct 598 ms 243736 KB Output is correct
13 Correct 346 ms 243140 KB Output is correct
14 Correct 356 ms 243696 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 36696 KB Output is correct
2 Correct 250 ms 213736 KB Output is correct
3 Correct 289 ms 214116 KB Output is correct
4 Correct 203 ms 207884 KB Output is correct
5 Correct 206 ms 213708 KB Output is correct
6 Correct 225 ms 214380 KB Output is correct
7 Correct 6 ms 36696 KB Output is correct
8 Correct 5 ms 36700 KB Output is correct
9 Correct 5 ms 36700 KB Output is correct
10 Correct 7 ms 38748 KB Output is correct
11 Correct 5 ms 36700 KB Output is correct
12 Correct 5 ms 36700 KB Output is correct
13 Correct 5 ms 36700 KB Output is correct
14 Correct 5 ms 36700 KB Output is correct
15 Correct 5 ms 36700 KB Output is correct
16 Correct 5 ms 36700 KB Output is correct
17 Correct 16 ms 47452 KB Output is correct
18 Correct 270 ms 218964 KB Output is correct
19 Execution timed out 3074 ms 219344 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #7
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 38748 KB Output is correct
2 Correct 5 ms 36700 KB Output is correct
3 Correct 5 ms 36700 KB Output is correct
4 Correct 5 ms 38744 KB Output is correct
5 Correct 5 ms 36700 KB Output is correct
6 Correct 5 ms 36696 KB Output is correct
7 Correct 5 ms 39364 KB Output is correct
8 Correct 5 ms 37212 KB Output is correct
9 Correct 5 ms 36700 KB Output is correct
10 Correct 19 ms 49352 KB Output is correct
11 Correct 19 ms 48176 KB Output is correct
12 Correct 19 ms 48472 KB Output is correct
13 Correct 12 ms 48732 KB Output is correct
14 Correct 14 ms 48184 KB Output is correct
15 Correct 5 ms 38744 KB Output is correct
16 Correct 5 ms 36696 KB Output is correct
17 Correct 6 ms 36696 KB Output is correct
18 Correct 294 ms 218256 KB Output is correct
19 Correct 282 ms 229072 KB Output is correct
20 Correct 298 ms 241352 KB Output is correct
21 Correct 285 ms 241608 KB Output is correct
22 Correct 307 ms 235324 KB Output is correct
23 Correct 179 ms 232104 KB Output is correct
24 Correct 173 ms 234440 KB Output is correct
25 Correct 186 ms 234444 KB Output is correct
26 Correct 5 ms 36696 KB Output is correct
27 Correct 250 ms 213736 KB Output is correct
28 Correct 289 ms 214116 KB Output is correct
29 Correct 203 ms 207884 KB Output is correct
30 Correct 206 ms 213708 KB Output is correct
31 Correct 225 ms 214380 KB Output is correct
32 Correct 5 ms 36700 KB Output is correct
33 Correct 4 ms 36700 KB Output is correct
34 Correct 5 ms 37212 KB Output is correct
35 Correct 13 ms 48912 KB Output is correct
36 Correct 545 ms 244028 KB Output is correct
37 Correct 598 ms 243736 KB Output is correct
38 Correct 346 ms 243140 KB Output is correct
39 Correct 356 ms 243696 KB Output is correct
40 Correct 6 ms 36696 KB Output is correct
41 Correct 5 ms 36700 KB Output is correct
42 Correct 5 ms 36700 KB Output is correct
43 Correct 7 ms 38748 KB Output is correct
44 Correct 5 ms 36700 KB Output is correct
45 Correct 5 ms 36700 KB Output is correct
46 Correct 5 ms 36700 KB Output is correct
47 Correct 5 ms 36700 KB Output is correct
48 Correct 5 ms 36700 KB Output is correct
49 Correct 5 ms 36700 KB Output is correct
50 Correct 16 ms 47452 KB Output is correct
51 Correct 270 ms 218964 KB Output is correct
52 Execution timed out 3074 ms 219344 KB Time limit exceeded
53 Halted 0 ms 0 KB -