oj.uz

답안 #491068

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
491068 2021-11-30T11:02:45 Z balbit 별자리 3 (JOI20_constellation3) C++14
100 / 100
 655 ms 64048 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int ll
#define y1 zck_is_king
#define pii pair<ll, ll>
#define ull unsigned ll
#define f first
#define s second
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
#define SQ(x) (x)*(x)
#define MN(a,b) a = min(a,(__typeof__(a))(b))
#define MX(a,b) a = max(a,(__typeof__(a))(b))
#define pb push_back
#define REP(i,n) for (int i = 0; i<n; ++i)
#define RREP(i,n) for (int i = n-1; i>=0; --i)
#define REP1(i,n) for (int i = 1; i<=n; ++i)
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#ifdef BALBIT
#define IOS()
#define bug(...) fprintf(stderr,"#%d (%s) = ",__LINE__,#__VA_ARGS__),_do(__VA_ARGS__);
template<typename T> void _do(T &&x){cerr<<x<<endl;}
template<typename T, typename ...S> void _do(T &&x, S &&...y){cerr<<x<<", ";_do(y...);}
#else
#define IOS() ios_base::sync_with_stdio(0);cin.tie(0);
#define endl '\n'
#define bug(...)
#endif

const int iinf = 1e9+10;
const ll inf = LLONG_MAX;
const ll mod = 1e9+7 ;


void GG(){cout<<"0\n"; exit(0);}

ll mpow(ll a, ll n, ll mo = mod){ // a^n % mod
    ll re=1;
    while (n>0){
        if (n&1) re = re*a %mo;
        a = a*a %mo;
        n>>=1;
    }
    return re;
}

ll inv (ll b, ll mo = mod){
    if (b==1) return b;
    return (mo-mo/b) * inv(mo%b,mo) % mo;
}

const int maxn = 2e5+5;


vector<pii> stars[maxn]; // stars in my region
int lc[maxn], rc[maxn], par[maxn];
int fa[21][maxn];
int L[maxn], R[maxn];
bool on[maxn];
namespace DSU{
    int par[maxn];
    int find(int x) {
        return x == par[x]? x : par[x] = find(par[x]);
    }
    void mrg(int a, int b) { // a is the new head
        a = find(a); b = find(b);
        MN(L[a], L[b]); MX(R[a], R[b]);
        par[b] = a;
    }
};

int a[maxn];
ll dp[maxn];

ll s[maxn];
void MO(int e, ll v) {
    for(++e; e<maxn; e+=e&-e) s[e] += v;
}
ll QU(int e) {
    ll re = 0;
    for(++e; e>0; e-=e&-e) {
        re += s[e];
    }
    return re;
}

signed main(){
    IOS();

    int n; cin>>n;
    vector<pii> who;
    REP(i,n) {
        cin>>a[i]; who.pb({a[i], i}); DSU::par[i] = par[i] = L[i] = R[i] = i;
    }
    sort(ALL(who), [&](pii x, pii y){return x.f==y.f?x.s>y.s:x.f<y.f;});
    for(pii p : who) {
        int i = p.s;
        lc[i] = rc[i] = n+1;
        if(i && on[i-1]) {
            lc[i] = DSU::find(i-1); par[lc[i]] = i;
            DSU::mrg(i, i-1);
        }
        if(i!=n-1 && on[i+1]) {
            rc[i] = DSU::find(i+1); par[rc[i]] = i;
            DSU::mrg(i, i+1);
        }
        on[i] = 1;
        bug(i, lc[i], rc[i]);
    }
    for(int j = 0; j<20; ++j) {
        REP(i,n) {
            if(j == 0) fa[j][i] = par[i];
            else fa[j][i] = fa[j-1][fa[j-1][i]];
        }
    }
    bug(par[6], par[5]);
    int m; cin>>m;
    ll sig = 0;
    REP(i,m) {
        int x,y,v; cin>>x>>y>>v; --x; sig += v;
        int at = x;
        for(int j = 19; j>=0; --j) {
            if(a[fa[j][at]] < y) at = fa[j][at];
        }
        bug(i, x, at, fa[0][at]);
        stars[at].pb({x,v});
    }

    ll re = 0;

    REP(ind,n) {
        int i = who[ind].s;
        dp[i] = dp[lc[i]] + dp[rc[i]];
        for(pii S : stars[i]) {
            if(S.f == i) {
                MX(dp[i], dp[lc[i]] + dp[rc[i]] + S.s);
            }else if (S.f < i) {
                MX(dp[i], QU(S.f) + dp[rc[i]] + S.s);
            }else if (S.f > i) {
                MX(dp[i], QU(S.f) + dp[lc[i]] + S.s);
            }
        }
        MO(i, dp[lc[i]] + dp[rc[i]]);
        MO(i+1, -(dp[lc[i]] + dp[rc[i]]));
        bug(i, dp[i]);
        MX(re, dp[i]);
        if (lc[i] != n+1 && rc[i] != n+1) {
            MO(L[lc[i]], dp[rc[i]]);
            MO(R[lc[i]]+1, -dp[rc[i]]);

            MO(L[rc[i]], dp[lc[i]]);
            MO(R[rc[i]]+1, -dp[lc[i]]);
        }
    }

    cout<<sig - re<<endl;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5324 KB Output is correct
2 Correct 3 ms 5212 KB Output is correct
3 Correct 2 ms 5324 KB Output is correct
4 Correct 3 ms 5324 KB Output is correct
5 Correct 3 ms 5276 KB Output is correct
6 Correct 3 ms 5324 KB Output is correct
7 Correct 3 ms 5324 KB Output is correct
8 Correct 3 ms 5324 KB Output is correct
9 Correct 3 ms 5284 KB Output is correct
10 Correct 3 ms 5280 KB Output is correct
11 Correct 3 ms 5324 KB Output is correct
12 Correct 3 ms 5324 KB Output is correct
13 Correct 3 ms 5324 KB Output is correct
14 Correct 3 ms 5324 KB Output is correct
15 Correct 3 ms 5224 KB Output is correct
16 Correct 3 ms 5324 KB Output is correct
17 Correct 3 ms 5324 KB Output is correct
18 Correct 3 ms 5324 KB Output is correct
19 Correct 4 ms 5324 KB Output is correct
20 Correct 3 ms 5324 KB Output is correct
21 Correct 3 ms 5324 KB Output is correct
22 Correct 3 ms 5280 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5324 KB Output is correct
2 Correct 3 ms 5212 KB Output is correct
3 Correct 2 ms 5324 KB Output is correct
4 Correct 3 ms 5324 KB Output is correct
5 Correct 3 ms 5276 KB Output is correct
6 Correct 3 ms 5324 KB Output is correct
7 Correct 3 ms 5324 KB Output is correct
8 Correct 3 ms 5324 KB Output is correct
9 Correct 3 ms 5284 KB Output is correct
10 Correct 3 ms 5280 KB Output is correct
11 Correct 3 ms 5324 KB Output is correct
12 Correct 3 ms 5324 KB Output is correct
13 Correct 3 ms 5324 KB Output is correct
14 Correct 3 ms 5324 KB Output is correct
15 Correct 3 ms 5224 KB Output is correct
16 Correct 3 ms 5324 KB Output is correct
17 Correct 3 ms 5324 KB Output is correct
18 Correct 3 ms 5324 KB Output is correct
19 Correct 4 ms 5324 KB Output is correct
20 Correct 3 ms 5324 KB Output is correct
21 Correct 3 ms 5324 KB Output is correct
22 Correct 3 ms 5280 KB Output is correct
23 Correct 4 ms 5708 KB Output is correct
24 Correct 5 ms 5708 KB Output is correct
25 Correct 4 ms 5708 KB Output is correct
26 Correct 5 ms 5708 KB Output is correct
27 Correct 5 ms 5796 KB Output is correct
28 Correct 4 ms 5708 KB Output is correct
29 Correct 5 ms 5708 KB Output is correct
30 Correct 5 ms 5708 KB Output is correct
31 Correct 5 ms 5708 KB Output is correct
32 Correct 5 ms 5708 KB Output is correct
33 Correct 5 ms 5708 KB Output is correct
34 Correct 4 ms 5796 KB Output is correct
35 Correct 7 ms 5708 KB Output is correct
36 Correct 4 ms 5708 KB Output is correct
37 Correct 4 ms 5836 KB Output is correct
38 Correct 4 ms 5708 KB Output is correct
39 Correct 4 ms 5708 KB Output is correct
40 Correct 4 ms 5708 KB Output is correct
41 Correct 4 ms 5708 KB Output is correct
42 Correct 5 ms 5708 KB Output is correct
43 Correct 4 ms 5708 KB Output is correct
44 Correct 4 ms 5708 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5324 KB Output is correct
2 Correct 3 ms 5212 KB Output is correct
3 Correct 2 ms 5324 KB Output is correct
4 Correct 3 ms 5324 KB Output is correct
5 Correct 3 ms 5276 KB Output is correct
6 Correct 3 ms 5324 KB Output is correct
7 Correct 3 ms 5324 KB Output is correct
8 Correct 3 ms 5324 KB Output is correct
9 Correct 3 ms 5284 KB Output is correct
10 Correct 3 ms 5280 KB Output is correct
11 Correct 3 ms 5324 KB Output is correct
12 Correct 3 ms 5324 KB Output is correct
13 Correct 3 ms 5324 KB Output is correct
14 Correct 3 ms 5324 KB Output is correct
15 Correct 3 ms 5224 KB Output is correct
16 Correct 3 ms 5324 KB Output is correct
17 Correct 3 ms 5324 KB Output is correct
18 Correct 3 ms 5324 KB Output is correct
19 Correct 4 ms 5324 KB Output is correct
20 Correct 3 ms 5324 KB Output is correct
21 Correct 3 ms 5324 KB Output is correct
22 Correct 3 ms 5280 KB Output is correct
23 Correct 4 ms 5708 KB Output is correct
24 Correct 5 ms 5708 KB Output is correct
25 Correct 4 ms 5708 KB Output is correct
26 Correct 5 ms 5708 KB Output is correct
27 Correct 5 ms 5796 KB Output is correct
28 Correct 4 ms 5708 KB Output is correct
29 Correct 5 ms 5708 KB Output is correct
30 Correct 5 ms 5708 KB Output is correct
31 Correct 5 ms 5708 KB Output is correct
32 Correct 5 ms 5708 KB Output is correct
33 Correct 5 ms 5708 KB Output is correct
34 Correct 4 ms 5796 KB Output is correct
35 Correct 7 ms 5708 KB Output is correct
36 Correct 4 ms 5708 KB Output is correct
37 Correct 4 ms 5836 KB Output is correct
38 Correct 4 ms 5708 KB Output is correct
39 Correct 4 ms 5708 KB Output is correct
40 Correct 4 ms 5708 KB Output is correct
41 Correct 4 ms 5708 KB Output is correct
42 Correct 5 ms 5708 KB Output is correct
43 Correct 4 ms 5708 KB Output is correct
44 Correct 4 ms 5708 KB Output is correct
45 Correct 630 ms 64020 KB Output is correct
46 Correct 613 ms 63360 KB Output is correct
47 Correct 655 ms 62972 KB Output is correct
48 Correct 637 ms 64024 KB Output is correct
49 Correct 627 ms 62392 KB Output is correct
50 Correct 621 ms 62396 KB Output is correct
51 Correct 647 ms 62440 KB Output is correct
52 Correct 654 ms 63816 KB Output is correct
53 Correct 621 ms 63548 KB Output is correct
54 Correct 607 ms 64048 KB Output is correct
55 Correct 645 ms 63040 KB Output is correct
56 Correct 613 ms 62344 KB Output is correct
57 Correct 585 ms 61836 KB Output is correct
58 Correct 428 ms 62004 KB Output is correct
59 Correct 426 ms 61464 KB Output is correct
60 Correct 142 ms 63172 KB Output is correct
61 Correct 525 ms 63184 KB Output is correct
62 Correct 631 ms 62208 KB Output is correct
63 Correct 548 ms 62548 KB Output is correct
64 Correct 510 ms 61196 KB Output is correct
65 Correct 574 ms 62748 KB Output is correct
66 Correct 534 ms 61844 KB Output is correct