样例可以一提交WA怎么办

P5735 【深基7.例1】距离函数

lzagddsg @ 2022-08-07 17:53:41

样例可以一提交WA怎么办

我的代码：

#include <bits/stdc++.h>

using namespace std;

int x[3], y[3], dis[3];
double ans;
int main()
{
    cin >> x[0] >> y[0] >> x[1] >> y[1] >> x[2] >> y[2];
    dis[0] = sqrt((x[1] - x[0]) * (x[1] - x[0]) + (y[1] - y[0]) * (y[1] - y[0]));
    dis[1] = sqrt((x[2] - x[1]) * (x[2] - x[1]) + (y[2] - y[1]) * (y[2] - y[1]));
    dis[2] = sqrt((x[0] - x[2]) * (x[0] - x[2]) + (y[0] - y[2]) * (y[0] - y[2]));
    ans = 1.00 * (dis[0] + dis[1] + dis[2]);
    printf("%.2lf", ans);
    return 0;
}

在样例测试的时候明显是12.00，可一提交却发现是WA，请问怎么办？

by lzagddsg @ 2022-08-07 18:01:23

补：后来我想了想是不是没用到函数的问题，改了下代码

#include <bits/stdc++.h>

using namespace std;

int x[3], y[3], dis[3];
double ans;
double distance(int a, int b, int c, int d, int e, int f)
{
    dis[0] = sqrt((x[1] - x[0]) * (x[1] - x[0]) + (y[1] - y[0]) * (y[1] - y[0]));
    dis[1] = sqrt((x[2] - x[1]) * (x[2] - x[1]) + (y[2] - y[1]) * (y[2] - y[1]));
    dis[2] = sqrt((x[0] - x[2]) * (x[0] - x[2]) + (y[0] - y[2]) * (y[0] - y[2]));
    ans = 1.00 * (dis[0] + dis[1] + dis[2]);
    return ans;
}
int main()
{
    cin >> x[0] >> y[0] >> x[1] >> y[1] >> x[2] >> y[2];
    printf("%.2f", distance(x[0], y[0], x[1], y[1], x[2], y[2]));
    return 0;
}

然后放入评测机测试，还是WA。

by Always_Remember_It @ 2022-08-07 18:02:27

@lzagddsg x,y,dis是double

by lzagddsg @ 2022-08-07 18:03:48

@zswmb 好的，我试试。

by hanzhang666 @ 2022-08-07 18:04:20

x，y，dis是double类型。改后代码：

#include <bits/stdc++.h>

using namespace std;

double x[3], y[3], dis[3];
double ans;
double distance(int a, int b, int c, int d, int e, int f)
{
    dis[0] = sqrt((x[1] - x[0]) * (x[1] - x[0]) + (y[1] - y[0]) * (y[1] - y[0]));
    dis[1] = sqrt((x[2] - x[1]) * (x[2] - x[1]) + (y[2] - y[1]) * (y[2] - y[1]));
    dis[2] = sqrt((x[0] - x[2]) * (x[0] - x[2]) + (y[0] - y[2]) * (y[0] - y[2]));
    ans = 1.00 * (dis[0] + dis[1] + dis[2]);
    return ans;
}
int main()
{
    cin >> x[0] >> y[0] >> x[1] >> y[1] >> x[2] >> y[2];
    printf("%.2f", distance(x[0], y[0], x[1], y[1], x[2], y[2]));
    return 0;
}

by lzagddsg @ 2022-08-07 18:04:49

@zswmb 谢谢，AC了，问题得到解决，听我说谢谢你~