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Submission #1018114

# Submission time Handle Problem Language Result Execution time Memory
1018114 2024-07-09T14:35:48 Z bachhoangxuan Modern Machine (JOI23_ho_t5) C++17
62 / 100
 3000 ms 241612 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[lt]+g(a[lt]);
                if(x<=bc) t=n-bc+x;
                else t=n-bc-(n-a[lt]+(g(a[lt])^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 << ((l<=r)?query(1,m,1,l,r,t):t) << '\n';
    }
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 34652 KB Output is correct
2 Correct 4 ms 32760 KB Output is correct
3 Correct 6 ms 34652 KB Output is correct
4 Correct 4 ms 32860 KB Output is correct
5 Correct 4 ms 34752 KB Output is correct
6 Correct 4 ms 32856 KB Output is correct
7 Correct 5 ms 33116 KB Output is correct
8 Correct 5 ms 33116 KB Output is correct
9 Correct 5 ms 32604 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 34652 KB Output is correct
2 Correct 4 ms 32760 KB Output is correct
3 Correct 6 ms 34652 KB Output is correct
4 Correct 4 ms 32860 KB Output is correct
5 Correct 4 ms 34752 KB Output is correct
6 Correct 4 ms 32856 KB Output is correct
7 Correct 5 ms 33116 KB Output is correct
8 Correct 5 ms 33116 KB Output is correct
9 Correct 5 ms 32604 KB Output is correct
10 Correct 17 ms 43608 KB Output is correct
11 Correct 26 ms 44380 KB Output is correct
12 Correct 21 ms 46428 KB Output is correct
13 Correct 12 ms 43096 KB Output is correct
14 Correct 14 ms 44380 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 34652 KB Output is correct
2 Correct 4 ms 32760 KB Output is correct
3 Correct 6 ms 34652 KB Output is correct
4 Correct 4 ms 32860 KB Output is correct
5 Correct 4 ms 34752 KB Output is correct
6 Correct 4 ms 32856 KB Output is correct
7 Correct 5 ms 33116 KB Output is correct
8 Correct 5 ms 33116 KB Output is correct
9 Correct 5 ms 32604 KB Output is correct
10 Correct 17 ms 43608 KB Output is correct
11 Correct 26 ms 44380 KB Output is correct
12 Correct 21 ms 46428 KB Output is correct
13 Correct 12 ms 43096 KB Output is correct
14 Correct 14 ms 44380 KB Output is correct
15 Correct 6 ms 34652 KB Output is correct
16 Correct 5 ms 32792 KB Output is correct
17 Correct 4 ms 32776 KB Output is correct
18 Correct 307 ms 218436 KB Output is correct
19 Correct 307 ms 228444 KB Output is correct
20 Correct 311 ms 240552 KB Output is correct
21 Correct 302 ms 240836 KB Output is correct
22 Correct 329 ms 234700 KB Output is correct
23 Correct 193 ms 231224 KB Output is correct
24 Correct 196 ms 234184 KB Output is correct
25 Correct 188 ms 233928 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 34648 KB Output is correct
2 Correct 278 ms 212584 KB Output is correct
3 Correct 275 ms 212560 KB Output is correct
4 Correct 207 ms 206160 KB Output is correct
5 Correct 208 ms 212624 KB Output is correct
6 Correct 206 ms 212564 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 34648 KB Output is correct
2 Correct 278 ms 212584 KB Output is correct
3 Correct 275 ms 212560 KB Output is correct
4 Correct 207 ms 206160 KB Output is correct
5 Correct 208 ms 212624 KB Output is correct
6 Correct 206 ms 212564 KB Output is correct
7 Correct 4 ms 32860 KB Output is correct
8 Correct 4 ms 32860 KB Output is correct
9 Correct 5 ms 35112 KB Output is correct
10 Correct 11 ms 43100 KB Output is correct
11 Correct 587 ms 241612 KB Output is correct
12 Correct 581 ms 241528 KB Output is correct
13 Correct 353 ms 241368 KB Output is correct
14 Correct 407 ms 241348 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 34648 KB Output is correct
2 Correct 278 ms 212584 KB Output is correct
3 Correct 275 ms 212560 KB Output is correct
4 Correct 207 ms 206160 KB Output is correct
5 Correct 208 ms 212624 KB Output is correct
6 Correct 206 ms 212564 KB Output is correct
7 Correct 4 ms 34648 KB Output is correct
8 Correct 4 ms 34648 KB Output is correct
9 Correct 5 ms 34652 KB Output is correct
10 Correct 5 ms 32804 KB Output is correct
11 Correct 5 ms 32856 KB Output is correct
12 Correct 4 ms 34652 KB Output is correct
13 Correct 4 ms 34648 KB Output is correct
14 Correct 4 ms 32604 KB Output is correct
15 Correct 4 ms 32860 KB Output is correct
16 Correct 4 ms 34652 KB Output is correct
17 Correct 17 ms 43828 KB Output is correct
18 Correct 286 ms 218316 KB Output is correct
19 Execution timed out 3037 ms 218572 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #7
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 34652 KB Output is correct
2 Correct 4 ms 32760 KB Output is correct
3 Correct 6 ms 34652 KB Output is correct
4 Correct 4 ms 32860 KB Output is correct
5 Correct 4 ms 34752 KB Output is correct
6 Correct 4 ms 32856 KB Output is correct
7 Correct 5 ms 33116 KB Output is correct
8 Correct 5 ms 33116 KB Output is correct
9 Correct 5 ms 32604 KB Output is correct
10 Correct 17 ms 43608 KB Output is correct
11 Correct 26 ms 44380 KB Output is correct
12 Correct 21 ms 46428 KB Output is correct
13 Correct 12 ms 43096 KB Output is correct
14 Correct 14 ms 44380 KB Output is correct
15 Correct 6 ms 34652 KB Output is correct
16 Correct 5 ms 32792 KB Output is correct
17 Correct 4 ms 32776 KB Output is correct
18 Correct 307 ms 218436 KB Output is correct
19 Correct 307 ms 228444 KB Output is correct
20 Correct 311 ms 240552 KB Output is correct
21 Correct 302 ms 240836 KB Output is correct
22 Correct 329 ms 234700 KB Output is correct
23 Correct 193 ms 231224 KB Output is correct
24 Correct 196 ms 234184 KB Output is correct
25 Correct 188 ms 233928 KB Output is correct
26 Correct 4 ms 34648 KB Output is correct
27 Correct 278 ms 212584 KB Output is correct
28 Correct 275 ms 212560 KB Output is correct
29 Correct 207 ms 206160 KB Output is correct
30 Correct 208 ms 212624 KB Output is correct
31 Correct 206 ms 212564 KB Output is correct
32 Correct 4 ms 32860 KB Output is correct
33 Correct 4 ms 32860 KB Output is correct
34 Correct 5 ms 35112 KB Output is correct
35 Correct 11 ms 43100 KB Output is correct
36 Correct 587 ms 241612 KB Output is correct
37 Correct 581 ms 241528 KB Output is correct
38 Correct 353 ms 241368 KB Output is correct
39 Correct 407 ms 241348 KB Output is correct
40 Correct 4 ms 34648 KB Output is correct
41 Correct 4 ms 34648 KB Output is correct
42 Correct 5 ms 34652 KB Output is correct
43 Correct 5 ms 32804 KB Output is correct
44 Correct 5 ms 32856 KB Output is correct
45 Correct 4 ms 34652 KB Output is correct
46 Correct 4 ms 34648 KB Output is correct
47 Correct 4 ms 32604 KB Output is correct
48 Correct 4 ms 32860 KB Output is correct
49 Correct 4 ms 34652 KB Output is correct
50 Correct 17 ms 43828 KB Output is correct
51 Correct 286 ms 218316 KB Output is correct
52 Execution timed out 3037 ms 218572 KB Time limit exceeded
53 Halted 0 ms 0 KB -