95分求助
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95分求助
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_Anonymous_楼主2023/1/23 10:44
// 

#include<iostream>
#include<iomanip>
#include<vector>
#include<queue>
#include<stack>
#include<stdio.h>
#include<cstring>
#include<string.h>
#include<cstdio>
#include<string>
#include<algorithm>
#include<utility>
#include<limits.h>
#include<map>
#include<set>
#include<cmath>
using namespace std;

long long x, w, n;
struct homework{
    long long x, w, t, cos;//在这个作业能写时上个作业不能写后写w吨作业最少精力
}hw[5050];
bool cmp(homework a, homework b)
{
    return a.t > b.t;
}
long long dp[10010];//dp[i]:写i吨作业最少精力

int main()
{
    cin >> x >> w >> n;
    for(int i = 1; i <= n; i++)
    {
        scanf("%lld%lld%lld", &hw[i].x, &hw[i].w, &hw[i].t);
    }
    sort(hw + 1, hw + n + 1, cmp);//时间从大到小排序
    memset(dp, 20, sizeof(dp));
    dp[0] = 0;
    for(int i = 1; i <= n; i++)
    {
        // cout << i << ":" << hw[i].x << " " << hw[i].w << " " << hw[i].t << endl;
        if(hw[i].w > w)
        {
            dp[w] = min(dp[w], hw[i].x);
        }
        else
        {
            for(int j = hw[i].w; j <= w + hw[i].w; j++)
            {
                dp[j] = min(dp[j], dp[j - hw[i].w] + hw[i].x);
                // cout << dp[j] << ' ';
            }
        }
        // cout << endl;
        hw[i].cos = 1 << 20;
        for(int j = w; j <= w << 1; j++)
        {
            hw[i].cos = min(hw[i].cos, dp[j]);
        }
    }
    for(int i = n; i > 0; i--)//时间从小到大遍历
    {
        // cout << i << "_cos:" << hw[i].cos << endl;
        long long cos = hw[i].cos * (hw[i].t - hw[i + 1].t);
        if(cos <= x)//能写到这份作业不能写
        {
            x -= cos;
        }
        else//不能写到这份作业不能写
        {
            cout << hw[i + 1].t + x / hw[i].cos << " " << x % hw[i].cos << endl;
            return 0;
        }
    }
    cout << hw[1].t << " " << x << endl;
    return 0;
}

蒟蒻求助,不知道哪里有bug

2023/1/23 10:44
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