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답안 #166496

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
166496 2019-12-02T15:41:48 Z Akashi Two Dishes (JOI19_dishes) C++14
5 / 100
 767 ms 62304 KB 
#include <bits/stdc++.h>
using namespace std;

const int SZ = 1e6 + 5;
const long long INF = 1e18;

int n, m;
long long Arb[4000015], Lazy_scad[4000015], Lazy_max[4000015];

long long a[SZ], b[SZ], s[SZ], s1[SZ], s2[SZ], t[SZ], q[SZ], p[SZ];

void propag_scad(int nod){
    if(Lazy_scad[nod] != 0){
        Arb[nod * 2] += Lazy_scad[nod];
        Arb[nod * 2 + 1] += Lazy_scad[nod];
        Lazy_scad[nod * 2] += Lazy_scad[nod];
        Lazy_scad[nod * 2 + 1] += Lazy_scad[nod];
        Lazy_scad[nod] = 0;
    }
}

void propag_max(int nod){
    if(Lazy_max[nod] != -INF){
        Arb[nod * 2] = max(Arb[nod * 2], Lazy_max[nod]);
        Arb[nod * 2 + 1] = max(Arb[nod * 2 + 1], Lazy_max[nod]);
        Lazy_max[nod * 2] = max(Lazy_max[nod * 2], Lazy_max[nod]);
        Lazy_max[nod * 2 + 1] = max(Lazy_max[nod * 2 + 1], Lazy_max[nod]);
        Lazy_max[nod] = -INF;
    }
}

void update_scad(int x, int y, long long v, int st = 0, int dr = m, int nod = 1){
    if(st != dr) propag_scad(nod), propag_max(nod);

    if(x <= st && dr <= y){
        Lazy_scad[nod] += v;
        Arb[nod] += v;
        return ;
    }

    int mij = (st + dr) / 2;
    if(x <= mij) update_scad(x, y, v, st, mij, nod * 2);
    if(mij + 1 <= y) update_scad(x, y, v, mij + 1, dr, nod * 2 + 1);

    Arb[nod] = max(Arb[nod * 2], Arb[nod * 2 + 1]);
}

void update_max(int x, int y, long long v, int st = 0, int dr = m, int nod = 1){
    if(st != dr) propag_scad(nod), propag_max(nod);

    if(x <= st && dr <= y){
        Lazy_max[nod] = max(v, Lazy_max[nod]);
        Arb[nod] = max(v, Arb[nod]);
        return ;
    }

    int mij = (st + dr) / 2;
    if(x <= mij) update_max(x, y, v, st, mij, nod * 2);
    if(mij + 1 <= y) update_max(x, y, v, mij + 1, dr, nod * 2 + 1);

    Arb[nod] = max(Arb[nod * 2], Arb[nod * 2 + 1]);
}

long long query(int x, int y, int st = 0, int dr = m, int nod = 1){
    if(x <= st && dr <= y) return Arb[nod];
    if(st != dr) propag_scad(nod), propag_max(nod);

    int mij = (st + dr) / 2;
    long long a1 = -INF, a2 = -INF;

    if(x <= mij) a1 = query(x, y, st, mij, nod * 2);
    if(mij + 1 <= y) a2 = query(x, y, mij + 1, dr, nod * 2 + 1);

    return max(a1, a2);
}

vector <pair <int, long long> > v[SZ];

void add_point(int x, int y, long long val){
    v[x].push_back({y, val});
}

int main()
{
//    freopen("1.in", "r", stdin);

    scanf("%d%d", &n, &m);

    for(int i = 1; i <= 4 * m + 4 ; ++i) Lazy_max[i] = -INF;

    for(int i = 1; i <= n ; ++i){
        scanf("%lld%lld%lld", &a[i], &s[i], &p[i]);
        s1[i] = s1[i - 1] + a[i];
    }

    for(int i = 1; i <= m ; ++i){
        scanf("%lld%lld%lld", &b[i], &t[i], &q[i]);
        s2[i] = s2[i - 1] + b[i];
    }

    long long Sum = 0;
    for(int i = 1; i <= n ; ++i){
        long long v = s[i] - s1[i];
        if(v < 0) continue ;

        int st = 1, dr = m;
        while(st <= dr){
            int mij = (st + dr) / 2;

            if(s2[mij] <= v) st = mij + 1;
            else dr = mij - 1;
        }

        if(dr < m) add_point(i - 1, dr + 1, -p[i]);
        Sum += p[i];
    }

    for(int i = 1; i <= m ; ++i){
        long long v = t[i] - s2[i];
        if(v < 0) continue ;

        int st = 1, dr = n;
        while(st <= dr){
            int mij = (st + dr) / 2;

            if(s1[mij] <= v) st = mij + 1;
            else dr = mij - 1;
        }

        add_point(dr, i, q[i]);
    }

    for(int i = 0; i <= n ; ++i){
        if(i > 0){
            for(auto it : v[i - 1]){
                long long val = -INF;
                if(it.first != 1) val = query(0, it.first - 1);
                update_max(it.first, m, val);
            }
        }

        for(auto it : v[i]) update_scad(it.first, m, it.second);
    }

    printf("%lld", Sum + Arb[1]);

    return 0;
}

Compilation message

dishes.cpp: In function 'int main()':
dishes.cpp:87:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
dishes.cpp:92:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld%lld", &a[i], &s[i], &p[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dishes.cpp:97:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld%lld", &b[i], &t[i], &q[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 620 ms 61592 KB Output is correct
2 Correct 767 ms 62304 KB Output is correct
3 Correct 322 ms 55616 KB Output is correct
4 Correct 492 ms 54884 KB Output is correct
5 Correct 30 ms 23928 KB Output is correct
6 Correct 570 ms 60260 KB Output is correct
7 Correct 206 ms 48348 KB Output is correct
8 Correct 130 ms 31620 KB Output is correct
9 Correct 336 ms 55760 KB Output is correct
10 Correct 610 ms 61816 KB Output is correct
11 Correct 262 ms 55600 KB Output is correct

Subtask #2
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23932 KB Output is correct
4 Incorrect 24 ms 23928 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23932 KB Output is correct
4 Incorrect 24 ms 23928 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23932 KB Output is correct
4 Incorrect 24 ms 23928 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23932 KB Output is correct
4 Incorrect 24 ms 23928 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23932 KB Output is correct
4 Incorrect 24 ms 23928 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 620 ms 61592 KB Output is correct
2 Correct 767 ms 62304 KB Output is correct
3 Correct 322 ms 55616 KB Output is correct
4 Correct 492 ms 54884 KB Output is correct
5 Correct 30 ms 23928 KB Output is correct
6 Correct 570 ms 60260 KB Output is correct
7 Correct 206 ms 48348 KB Output is correct
8 Correct 130 ms 31620 KB Output is correct
9 Correct 336 ms 55760 KB Output is correct
10 Correct 610 ms 61816 KB Output is correct
11 Correct 262 ms 55600 KB Output is correct
12 Correct 25 ms 23928 KB Output is correct
13 Correct 25 ms 23928 KB Output is correct
14 Correct 24 ms 23932 KB Output is correct
15 Incorrect 24 ms 23928 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #8
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 620 ms 61592 KB Output is correct
2 Correct 767 ms 62304 KB Output is correct
3 Correct 322 ms 55616 KB Output is correct
4 Correct 492 ms 54884 KB Output is correct
5 Correct 30 ms 23928 KB Output is correct
6 Correct 570 ms 60260 KB Output is correct
7 Correct 206 ms 48348 KB Output is correct
8 Correct 130 ms 31620 KB Output is correct
9 Correct 336 ms 55760 KB Output is correct
10 Correct 610 ms 61816 KB Output is correct
11 Correct 262 ms 55600 KB Output is correct
12 Correct 25 ms 23928 KB Output is correct
13 Correct 25 ms 23928 KB Output is correct
14 Correct 24 ms 23932 KB Output is correct
15 Incorrect 24 ms 23928 KB Output isn't correct
16 Halted 0 ms 0 KB -