Codeforces A. Sweet Problem(思维题)

传送门

题意:

有红,绿,蓝三种颜色的糖各r,g,b个,每天要吃两个糖且颜色不同,问最多能吃多少天

思路:

先把r,g,b排序,从小到大为a,b,c如果a+b<=c,结果肯定输出a+b
否则输出(a+b+c)/2
原因:为了使天数最多,每次取最多和次多的两堆,当次多的变成和最少的相等时,把最多的那个平分个最少和中间那一堆,(如果最多的为奇数,那么总共还剩一个,如果为偶数,所有糖果用完),所以说最优解剩下的糖果不超过两个(a+b>c时)

代码

#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <string>
#include <stack>
#include <map>
#include <math.h>
#include <vector>
#include <set>
#include <queue>
#include <map>
#include <deque>
//#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int a[10];
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
        scanf("%d%d%d",&a[1],&a[2],&a[3]);
        sort(a+1,a+4);
        if(a[1]+a[2]<=a[3])
        printf("%d\n",a[1]+a[2]);
        else {
            printf("%d\n", (a[1] + a[2] + a[3]) / 2);
        }
    }
    return 0;
}
 

原文地址:https://www.cnblogs.com/zzl-dreamfly/p/11965706.html

时间: 2024-08-28 16:11:11

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