제출 #246904

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
246904		sealnot123	Two Dishes (JOI19_dishes)	C++14	82 / 100	10033 ms	182116 KiB

dishes

#include<bits/stdc++.h>
#define x first
#define y second
#define pb push_back
#define eb emplace_back
#define all(a) (a).begin(),(a).end()
#define SZ(a) (int)(a).size()
#define FOR(i, a, b) for(int i=(a); i<=(b); ++i)
#define iFOR(i, a, b) for(int i=(a); i>=(b); --i)
#define make_unique(a) sort(all((a))), (a).resize(unique(all((a)))-(a).begin())

using namespace std;

typedef pair<int,int> PII;
typedef long long LL;
typedef double DD;
typedef long double LD;
typedef pair<LL,LL> PLL;
typedef pair<DD,DD> PDD;
typedef vector<int> VI;
typedef vector<LL> VL;

const LL inf = 1e18;
const int N = 1000005;
LL n;
LL seg[N<<2], lazy[N<<2], label[N<<2];
LL fastMax(LL x, LL y) { return (((y-x)>>(63))&(x^y))^y; }
int fastMin(int x, int y) { return (((y-x)>>(31))&(x^y))^x; }
void push_add(int l, int r, int nw){
    seg[nw] += lazy[nw];
    if(l != r){
        lazy[nw<<1] += lazy[nw], lazy[nw<<1|1] += lazy[nw];
    }
    lazy[nw] = 0;
}
void push_label(int l, int r, int nw){
    seg[nw] = label[nw];
    if(l != r){
        lazy[nw<<1] = lazy[nw<<1|1] = 0;
        label[nw<<1] = label[nw<<1|1] = label[nw];
    }
    label[nw] = inf;
}
void paste(int ll, int rr, LL v, int l = 0, int r = n, int nw = 1){
    if(label[nw] != inf) push_label(l, r, nw);
    if(lazy[nw] != 0) push_add(l, r, nw);
    if(ll > rr || l > rr || r < ll) return ;
    if(l >= ll && r <= rr){
        label[nw] = v;
        push_label(l, r, nw); 
        return ;
    }
    int m = (l+r)>>1;
    paste(ll, rr, v, l, m, nw<<1);
    paste(ll, rr, v, m+1, r, nw<<1|1);
    seg[nw] = fastMax(seg[nw<<1], seg[nw<<1|1]);
}
void add(int ll, int rr, LL v, int l = 0, int r = n, int nw = 1){
    if(label[nw] != inf) push_label(l, r, nw);
    if(lazy[nw] != 0) push_add(l, r, nw);
    if(l > r || ll > rr || l > rr || r < ll) return ;
    if(l >= ll && r <= rr){
        lazy[nw] = v;
        push_add(l, r, nw);
        return ;
    }
    int m = (l+r)>>1;
    add(ll, rr, v, l, m, nw<<1);
    add(ll, rr, v, m+1, r, nw<<1|1);
    seg[nw] = fastMax(seg[nw<<1], seg[nw<<1|1]);
}
int search(int ll, int rr, LL v, int l = 0, int r = n, int nw = 1){
    if(label[nw] != inf) push_label(l, r, nw);
    if(lazy[nw] != 0) push_add(l, r, nw);
    if(l > rr || r < ll) return rr+1;
    if(l == r){
        if(seg[nw] >= v) return l;
        return rr+1;
    }
    int m = (l+r)>>1;
    if(l >= ll && r <= rr){
        if(label[nw<<1] != inf) push_label(l, m, nw<<1);
        if(lazy[nw<<1] != 0) push_add(l, m, nw<<1);
        if(seg[nw<<1] >= v) return search(ll, rr, v, l, m, nw<<1);
        return search(ll, rr, v, m+1, r, nw<<1|1);
    }
    return fastMin( search(ll, rr, v, l, m, nw<<1), search(ll, rr, v, m+1, r, nw<<1|1));
}
LL get(int idx, int l = 0, int r = n, int nw = 1){
    if(label[nw] != inf) push_label(l, r, nw);
    if(lazy[nw] != 0) push_add(l, r, nw);
    if(l == r) return seg[nw];
    int m = (l+r)>>1;
    if(idx <= m) return get(idx, l, m, nw<<1);
    return get(idx, m+1, r, nw<<1|1);
}

LL A[N], B[N];
LL S[N], T[N];
LL P[N], Q[N];
vector< PLL > sweep[N];
LL m;
void fastscan(LL &x)
{
    bool neg=false;
    register LL c;
    c=getchar();
    if(c=='-')
    {
        neg = true;
        c=getchar();
    }
    for(;(c>47 && c<58);c=getchar())
        x = (x<<1) + (x<<3) +c -48;
    if(neg)
        x *=-1;
} 
void evaluate(PLL a, PLL b){
    int now = a.x;
    LL upd = a.y;
    int nxt = b.x;
    add(now+1, n, upd);
    // printf("##"); seg.print(); puts("");
    if(now == nxt) return ;
    LL value = get(now);
    int stop_point = search(now+1, nxt, value)-1;
    //printf("j %d (%d, %d) %lld stop = %d\n",j,now,nxt,value,stop_point);
    if(stop_point > now) paste(now+1, stop_point, value);
}
int main(){
    fastscan(n); fastscan(m);
    FOR(i, 1, n) fastscan(A[i]), fastscan(S[i]), fastscan(P[i]), A[i] += A[i-1];
    FOR(i, 1, m) fastscan(B[i]), fastscan(T[i]), fastscan(Q[i]), B[i] += B[i-1];
    FOR(i, 1, (n+1)<<2) label[i] = inf;
    FOR(i, 1, n){
        int pA = upper_bound(B, B+1+m, S[i]-A[i]) - B - 1;
        if(pA == -1) continue;
        sweep[pA+1].pb(PLL(i-1, P[i]));
    }
    //seg.print(); puts("");
    FOR(i, 1, m){
        int pB = upper_bound(A, A+1+n, T[i]-B[i]) - A - 1;
        int ch = 0;
        if(pB != -1) add(0, pB, Q[i]), ch = 1;
        //printf("#"); seg.print(); puts("");
        sweep[i].pb( PLL(n, 0) );
        //printf("sweep: "); for(PLL e : sweep[i]) printf("(%lld, %lld) ",e.x,e.y);
        //puts("");
        if(ch && sweep[i][0].x > pB){
            evaluate(PLL(pB, 0), sweep[i][0]);
            ch = 0;
        }
        FOR(j, 0, SZ(sweep[i])-2){
            if(ch && sweep[i][j].x < pB && pB < sweep[i][j+1].x){
                evaluate(sweep[i][j], PLL(pB, 0));
                evaluate(PLL(pB, 0), sweep[i][j+1]);
                ch = 0;
            }else{
                evaluate(sweep[i][j], sweep[i][j+1]);
            }
        }
        sweep[i].clear();
        //seg.print(); puts("");
    }
    //puts("");
    for(PLL e : sweep[m+1]) add(e.x+1, n, e.y);
    printf("%lld",get(n));
	return 0;
}
/*
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

• Subtask 1: 5 / 5
• Subtask 2: 3 / 3
• Subtask 3: 7 / 7
• Subtask 4: 39 / 39
• Subtask 5: 11 / 11
• Subtask 6: 0 / 9
• Subtask 7: 17 / 17
• Subtask 8: 0 / 9