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답안 #166484

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
166484 2019-12-02T15:21:56 Z Akashi Two Dishes (JOI19_dishes) C++14
5 / 100
 754 ms 74500 KB 
#include <bits/stdc++.h>
using namespace std;

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

int n, m;
long long Arb[4000005], Lazy_scad[4000005], Lazy_max[4000005];

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 = 1, 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 = 1, 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 = 1, 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 = 0, a2 = 0;

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

    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 626 ms 73720 KB Output is correct
2 Correct 754 ms 74500 KB Output is correct
3 Correct 455 ms 67548 KB Output is correct
4 Correct 496 ms 67264 KB Output is correct
5 Correct 26 ms 23928 KB Output is correct
6 Correct 613 ms 72320 KB Output is correct
7 Correct 311 ms 53604 KB Output is correct
8 Correct 134 ms 37252 KB Output is correct
9 Correct 453 ms 68556 KB Output is correct
10 Correct 595 ms 67804 KB Output is correct
11 Correct 390 ms 61916 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 24 ms 23800 KB Output is correct
3 Correct 26 ms 23928 KB Output is correct
4 Incorrect 25 ms 24056 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 24 ms 23800 KB Output is correct
3 Correct 26 ms 23928 KB Output is correct
4 Incorrect 25 ms 24056 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 24 ms 23800 KB Output is correct
3 Correct 26 ms 23928 KB Output is correct
4 Incorrect 25 ms 24056 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 24 ms 23800 KB Output is correct
3 Correct 26 ms 23928 KB Output is correct
4 Incorrect 25 ms 24056 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 24 ms 23800 KB Output is correct
3 Correct 26 ms 23928 KB Output is correct
4 Incorrect 25 ms 24056 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 626 ms 73720 KB Output is correct
2 Correct 754 ms 74500 KB Output is correct
3 Correct 455 ms 67548 KB Output is correct
4 Correct 496 ms 67264 KB Output is correct
5 Correct 26 ms 23928 KB Output is correct
6 Correct 613 ms 72320 KB Output is correct
7 Correct 311 ms 53604 KB Output is correct
8 Correct 134 ms 37252 KB Output is correct
9 Correct 453 ms 68556 KB Output is correct
10 Correct 595 ms 67804 KB Output is correct
11 Correct 390 ms 61916 KB Output is correct
12 Correct 25 ms 23928 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 26 ms 23928 KB Output is correct
15 Incorrect 25 ms 24056 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #8
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 626 ms 73720 KB Output is correct
2 Correct 754 ms 74500 KB Output is correct
3 Correct 455 ms 67548 KB Output is correct
4 Correct 496 ms 67264 KB Output is correct
5 Correct 26 ms 23928 KB Output is correct
6 Correct 613 ms 72320 KB Output is correct
7 Correct 311 ms 53604 KB Output is correct
8 Correct 134 ms 37252 KB Output is correct
9 Correct 453 ms 68556 KB Output is correct
10 Correct 595 ms 67804 KB Output is correct
11 Correct 390 ms 61916 KB Output is correct
12 Correct 25 ms 23928 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 26 ms 23928 KB Output is correct
15 Incorrect 25 ms 24056 KB Output isn't correct
16 Halted 0 ms 0 KB -