Submission #579166

#	Time	Username	Problem	Language	Result	Execution time	Memory
579166		lcj	Two Dishes (JOI19_dishes)	C++17	0 / 100	144 ms	20504 KiB

dishes

#include <bits/stdc++.h>

using namespace std;

typedef unsigned long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;

int n, m;

struct Dish {
    ll a, s, p;
};
vector<Dish> d1, d2;
vector<ll> p1, p2, po1, po2;

ll getTime(int i1, int i2) {
    return p1[i1]+p2[i2];
}


void solve() {
    cin >> n >> m;
    ll a, s, p;
    p1.assign(n+1, 0);
    p2.assign(m+1, 0);
    po1.assign(n+1, 0);
    po2.assign(n+1, 0);
    int t1, t2;
    for (int i = 0; i < n; i++)
    {
        cin >> a >> s >> p;
        Dish dd = Dish {a, s, p};
        d1.push_back(dd);
        p1[i+1] = p1[i]+a;
        po1[i+1] = po1[i]+p;
        t1 = s;
    }
    for (int i = 0; i < m; i++)
    {
        cin >> a >> s >> p;
        Dish dd = Dish {a, s, p};
        d2.push_back(dd);
        p2[i+1] = p2[i]+a;
        po2[i+1] = po2[i]+p;
    }
    ll cmax = 0; bool iset = 0;
    for (int i = 0; i <= n; i++)
    {
        if (p1[i] > t1) continue;
        int idx = upper_bound(p2.begin(), p2.end(), t1-p1[i])-p2.begin()-1;
        ll tnow = p1[i]+p2[idx];
        int ri = i;
        if (idx == m) {
            ri = upper_bound(p1.begin(), p1.end(), t1-p2[idx])-p1.begin()-1;
        }
        if (!iset) cmax = po1[ri]+po2[idx];
        cmax = max(cmax, po1[ri]+po2[idx]);
        iset = 1;
    }
    cout << cmax << endl;
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(0);
    solve();
    return 0;
}

Compilation message (stderr)

dishes.cpp: In function 'void solve()':
dishes.cpp:50:19: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<long long unsigned int>, long long unsigned int>::value_type' {aka 'long long unsigned int'} and 'int' [-Wsign-compare]
   50 |         if (p1[i] > t1) continue;
dishes.cpp:52:12: warning: unused variable 'tnow' [-Wunused-variable]
   52 |         ll tnow = p1[i]+p2[idx];
      |            ^~~~
dishes.cpp:29:13: warning: unused variable 't2' [-Wunused-variable]
   29 |     int t1, t2;
      |             ^~
dishes.cpp:50:21: warning: 't1' may be used uninitialized in this function [-Wmaybe-uninitialized]
   50 |         if (p1[i] > t1) continue;
      |                     ^~

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