oj.uz

답안 #865620

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
865620 2023-10-24T12:33:10 Z guagua0407 Bitaro, who Leaps through Time (JOI19_timeleap) C++17
100 / 100
 565 ms 153672 KB 
//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

struct node{
    ll s1=0,s2=0,e1=0,e2=0,c1=0,c2=0,sz=0;
};

const int mxn=3e5+5;
vector<vector<node>> segtree(2);
int n,q;
ll L[mxn],R[mxn];
node trash;

node merge(const node &a,const node &b){
    if(a.sz==-1) return b;
    if(b.sz==-1) return a;
    node ans;
    ans.sz=a.sz+b.sz;
    ans.s1=a.s1;
    ans.s2=a.s2;
    {
        ans.c1=a.c1;
        if(a.e1>b.s1){
            ans.c1+=b.c1+(a.e1-b.s1);
            ans.e1=b.e1;
        }
        else if(a.e1>=b.s2){
            ll dif=b.c1-b.c2;
            ans.c1+=b.c2+max(0ll,dif-(b.s1-a.e1));
            ll res=a.e1+b.sz;
            if(res>b.e1){
                ans.e1=b.e1;
            }
            else{
                ans.e1=max(res,b.e2);
            }
        }
        else{
            ans.c1+=b.c2;
            ans.e1=b.e2;
        }
    }
    {
        ans.c2=a.c2;
        if(a.e2>b.s1){
            ans.c2+=b.c1+(a.e2-b.s1);
            ans.e2=b.e1;
        }
        else if(a.e2>=b.s2){
            ll dif=b.c1-b.c2;
            ans.c2+=b.c2+max(0ll,dif-(b.s1-a.e2));
            ll res=a.e2+b.sz;
            if(res>b.e1){
                ans.e2=b.e1;
            }
            else{
                ans.e2=max(res,b.e2);
            }
        }
        else{
            ans.c2+=b.c2;
            ans.e2=b.e2;
        }
    }
    return ans;
}

void build(int id,int l=1,int r=n,int v=1){
    if(l==r){
        segtree[id][v].s1=R[l]-1;
        segtree[id][v].s2=L[l];
        segtree[id][v].e1=R[l];
        segtree[id][v].e2=L[l]+1;
        segtree[id][v].c1=segtree[id][v].c2=0;
        segtree[id][v].sz=1;
        return;
    }
    int mid=(l+r)/2;
    build(id,l,mid,v*2);
    build(id,mid+1,r,v*2+1);
    segtree[id][v]=merge(segtree[id][v*2],segtree[id][v*2+1]);
}

void update(int id,int pos,int s,int e,int l=1,int r=n,int v=1){
    if(l==r){
        segtree[id][v].s1=e-1;
        segtree[id][v].s2=s;
        segtree[id][v].e1=e;
        segtree[id][v].e2=s+1;
        return;
    }
    int mid=(l+r)/2;
    if(pos<=mid) update(id,pos,s,e,l,mid,v*2);
    else update(id,pos,s,e,mid+1,r,v*2+1);
    segtree[id][v]=merge(segtree[id][v*2],segtree[id][v*2+1]);
}

node query(int id,int tl,int tr,int l=1,int r=n,int v=1){
    if(r<tl or tr<l){
        return trash;
    }
    if(tl<=l and r<=tr){
        return segtree[id][v];
    }
    int mid=(l+r)/2;
    return merge(query(id,tl,min(mid,tr),l,mid,v*2),query(id,max(mid+1,tl),tr,mid+1,r,v*2+1));
}

signed main() {_
    trash.sz=-1;
    cin>>n>>q;
    for(int i=1;i<n;i++){
        cin>>L[i]>>R[i];
    }
    segtree[0].resize(n*4);
    segtree[1].resize(n*4);
    build(0);
    reverse(L+1,L+n);
    reverse(R+1,R+n);
    build(1);
    reverse(L+1,L+n);
    reverse(R+1,R+n);
    for(int i=0;i<q;i++){
        int t;
        cin>>t;
        if(t==1){
            ll p,s,e;
            cin>>p>>s>>e;
            update(0,p,s,e);
            update(1,n-p,s,e);
        }
        else{
            ll a,b,c,d;
            cin>>a>>b>>c>>d;
            if(a==c){
                cout<<max(0ll,b-d)<<'\n';
                continue;
            }
            node tmp;
            if(a<c){
                tmp=query(0,a,c-1);
            }
            else{
                a=n-a+1;
                c=n-c+1;
                tmp=query(1,a,c-1);
            }
            node cur;
            cur.e1=b;
            node fin=merge(cur,tmp);
            tmp.e2;
            cout<<fin.c1+max(0ll,fin.e1-d)<<'\n';;
        }
    }
    return 0;
}
//maybe its multiset not set

Compilation message

timeleap.cpp: In function 'int main()':
timeleap.cpp:163:17: warning: statement has no effect [-Wunused-value]
  163 |             tmp.e2;
      |             ~~~~^~
timeleap.cpp: In function 'void setIO(std::string)':
timeleap.cpp:12:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
timeleap.cpp:13:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# 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 0 ms 2516 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 2 ms 2908 KB Output is correct
13 Correct 2 ms 2652 KB Output is correct
14 Correct 2 ms 2652 KB Output is correct
15 Correct 2 ms 2908 KB Output is correct
16 Correct 1 ms 2908 KB Output is correct
17 Correct 2 ms 2908 KB Output is correct
18 Correct 2 ms 2908 KB Output is correct
19 Correct 2 ms 2908 KB Output is correct
20 Correct 1 ms 2908 KB Output is correct
21 Correct 1 ms 2908 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 2 ms 2908 KB Output is correct
24 Correct 2 ms 2908 KB Output is correct
25 Correct 2 ms 2908 KB Output is correct
26 Correct 2 ms 2716 KB Output is correct
27 Correct 2 ms 2652 KB Output is correct
28 Correct 1 ms 2908 KB Output is correct
29 Correct 2 ms 2908 KB Output is correct
30 Correct 2 ms 2908 KB Output is correct
31 Correct 2 ms 2904 KB Output is correct
32 Correct 2 ms 2908 KB Output is correct
33 Correct 2 ms 2652 KB Output is correct
34 Correct 2 ms 2908 KB Output is correct
35 Correct 1 ms 2908 KB Output is correct
36 Correct 2 ms 2908 KB Output is correct
37 Correct 2 ms 2908 KB Output is correct
38 Correct 2 ms 2908 KB Output is correct
39 Correct 2 ms 2908 KB Output is correct
40 Correct 2 ms 2908 KB Output is correct
41 Correct 0 ms 348 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 495 ms 129264 KB Output is correct
2 Correct 484 ms 121988 KB Output is correct
3 Correct 480 ms 123684 KB Output is correct
4 Correct 484 ms 119888 KB Output is correct
5 Correct 491 ms 128852 KB Output is correct
6 Correct 488 ms 126804 KB Output is correct
7 Correct 503 ms 131016 KB Output is correct
8 Correct 484 ms 136272 KB Output is correct
9 Correct 458 ms 120660 KB Output is correct
10 Correct 505 ms 130428 KB Output is correct
11 Correct 500 ms 129148 KB Output is correct
12 Correct 505 ms 138620 KB Output is correct
13 Correct 517 ms 141152 KB Output is correct
14 Correct 0 ms 348 KB Output is correct

Subtask #3
66.0 / 66.0

# 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 0 ms 2516 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 2 ms 2908 KB Output is correct
13 Correct 2 ms 2652 KB Output is correct
14 Correct 2 ms 2652 KB Output is correct
15 Correct 2 ms 2908 KB Output is correct
16 Correct 1 ms 2908 KB Output is correct
17 Correct 2 ms 2908 KB Output is correct
18 Correct 2 ms 2908 KB Output is correct
19 Correct 2 ms 2908 KB Output is correct
20 Correct 1 ms 2908 KB Output is correct
21 Correct 1 ms 2908 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 2 ms 2908 KB Output is correct
24 Correct 2 ms 2908 KB Output is correct
25 Correct 2 ms 2908 KB Output is correct
26 Correct 2 ms 2716 KB Output is correct
27 Correct 2 ms 2652 KB Output is correct
28 Correct 1 ms 2908 KB Output is correct
29 Correct 2 ms 2908 KB Output is correct
30 Correct 2 ms 2908 KB Output is correct
31 Correct 2 ms 2904 KB Output is correct
32 Correct 2 ms 2908 KB Output is correct
33 Correct 2 ms 2652 KB Output is correct
34 Correct 2 ms 2908 KB Output is correct
35 Correct 1 ms 2908 KB Output is correct
36 Correct 2 ms 2908 KB Output is correct
37 Correct 2 ms 2908 KB Output is correct
38 Correct 2 ms 2908 KB Output is correct
39 Correct 2 ms 2908 KB Output is correct
40 Correct 2 ms 2908 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 495 ms 129264 KB Output is correct
43 Correct 484 ms 121988 KB Output is correct
44 Correct 480 ms 123684 KB Output is correct
45 Correct 484 ms 119888 KB Output is correct
46 Correct 491 ms 128852 KB Output is correct
47 Correct 488 ms 126804 KB Output is correct
48 Correct 503 ms 131016 KB Output is correct
49 Correct 484 ms 136272 KB Output is correct
50 Correct 458 ms 120660 KB Output is correct
51 Correct 505 ms 130428 KB Output is correct
52 Correct 500 ms 129148 KB Output is correct
53 Correct 505 ms 138620 KB Output is correct
54 Correct 517 ms 141152 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 531 ms 140188 KB Output is correct
57 Correct 514 ms 131808 KB Output is correct
58 Correct 524 ms 143972 KB Output is correct
59 Correct 528 ms 144976 KB Output is correct
60 Correct 565 ms 134884 KB Output is correct
61 Correct 563 ms 149208 KB Output is correct
62 Correct 551 ms 148780 KB Output is correct
63 Correct 545 ms 148224 KB Output is correct
64 Correct 554 ms 149916 KB Output is correct
65 Correct 528 ms 142164 KB Output is correct
66 Correct 504 ms 143048 KB Output is correct
67 Correct 510 ms 148920 KB Output is correct
68 Correct 488 ms 137184 KB Output is correct
69 Correct 527 ms 152916 KB Output is correct
70 Correct 515 ms 136020 KB Output is correct
71 Correct 515 ms 130944 KB Output is correct
72 Correct 517 ms 136572 KB Output is correct
73 Correct 532 ms 149588 KB Output is correct
74 Correct 551 ms 150636 KB Output is correct
75 Correct 564 ms 152920 KB Output is correct
76 Correct 556 ms 153672 KB Output is correct
77 Correct 0 ms 348 KB Output is correct