<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style>
body, ul, li,select {
margin: 0;
padding: 0;
box-sizing: border-box;
}
ul,li {list-style: none;}
.calculator {
max-width: 300px;
margin: 20px auto;
border: 1px solid #eee;
border-radius: 3px;
}
.cal-header {
font-size: 16px;
color: #333;
font-weight: bold;
height: 48px;
line-height: 48px;
border-bottom: 1px solid #eee;
text-align: center;
}
.cal-main {
font-size: 14px;
}
.cal-main .origin-value {
padding: 15px;
height: 40px;
line-height: 40px;
font-size: 20px;
text-align: right;
overflow: hidden;
text-overflow:ellipsis;
white-space: nowrap;
}
.cal-main .origin-type,
.cal-main .target-type {
padding-left: 5px;
width: 70px;
font-size: 14px;
height: 30px;
border: 1px solid #eee;
background-color: #fff;
vertical-align: middle;
margin-right: 10px;
border-radius: 3px;
}
.cal-keyboard {
overflow: hidden;
}
.cal-items {
overflow: hidden;
}
.cal-items li {
user-select: none;
float: left;
display: inline-block;
width: 75px;
height: 75px;
text-align: center;
line-height: 75px;
border-top: 1px solid #eee;
border-left: 1px solid #eee;
box-sizing: border-box;
}
li:nth-of-type(4n+1) {
border-left: none;
}
li[data-action=operator] {
background: #f5923e;
color: #fff;
}
.buttons {
float: left;
width: 75px;
}
.buttons .btn {
width: 75px;
background-color: #fff;
border-top: 1px solid #eee;
border-left: 1px solid #eee;
height: 150px;
line-height: 150px;
text-align: center;
}
.btn-esc {
color: #ff5a34;
}
.btn-backspace {
position: relative;
}
</style>
</head>
<body>
<div class="calculator">
<header class="cal-header">简易计算器</header>
<main class="cal-main">
<div class="origin-value">0</div>
<div class="cal-keyboard">
<ul class="cal-items">
<li data-action="num">7</li>
<li data-action="num">8</li>
<li data-action="num">9</li>
<li data-action="operator">÷</li>
<li data-action="num">4</li>
<li data-action="num">5</li>
<li data-action="num">6</li>
<li data-action="operator">x</li>
<li data-action="num">1</li>
<li data-action="num">2</li>
<li data-action="num">3</li>
<li data-action="operator">-</li>
<li data-action="num">0</li>
<li data-action="operator">清空</li>
<li data-action="operator">=</li>
<li data-action="operator">+</li>
</ul>
</div>
</main>
</div>
<script type="text/javascript">
var Calculator = {
init: function () {
var that = this;
if (!that.isInited) {
that.isInited = true;
// 保存操作信息
// total: Number, 总的结果
// next: String, 下一个和 total 进行运算的数据
// action: String, 操作符号
that.data = {total: 0, next: '', action: ''};
that.bindEvent();
}
},
bindEvent: function () {
var that = this;
// 请补充代码：获取 .cal-keyboard 元素
var keyboardEl = document.querySelector('.cal-keyboard');
keyboardEl && keyboardEl.addEventListener('click', function (event) {
// 请补充代码：获取当前点击的dom元素
// console.log('@@@',event.target.getAttribute('data-action'));
var target = event.target;
// 请补充代码：获取target的 data-action 值
var action = target.getAttribute('data-action');
// console.log('!!!',action);
// 请补充代码：获取target的内容
var value = target.innerHTML;
// console.log('!!!', value);
if (action === 'num' || action === 'operator') {
that.result(value, action === 'num');
}
});
},
result: function (action, isNum) {
var that = this;
var data = that.data;
if (isNum) {
data.next = data.next === '0' ? action : (data.next + action);
!data.action && (data.total = 0);
} else if (action === '清空') {
// 请补充代码：设置清空时的对应状态
data.total = 0;
data.next = 0;
data.action = '';
} else if (action === '=') {
if (data.next || data.action) {
data.total = that.calculate(data.total, data.next, data.action);
data.next = '';
data.action = '';
}
} else if (!data.next) {
data.action = action;
} else if (data.action) {
data.total = that.calculate(data.total, data.next, data.action);
data.next = '';
data.action = action;
} else {
data.total = +data.next || 0;
data.next = '';
data.action = action;
}
// ���补充代码：获取 .origin-value 元素
var valEl = document.querySelector('.origin-value');
valEl && (valEl.innerHTML = data.next || data.total || '0');
},
calculate: function (n1, n2, operator) {
n1 = +n1 || 0;
n2 = +n2 || 0;
if (operator === '÷') {
// 请补充代码：获取除法的结果
var sum = +(n1 / n2);
if(n2 == 0){
sum = 0;
}
return Math.round(sum * 100) / 100;
} else if (operator === 'x') {
// 请补充代码：获取乘法的结果
return Math.round(n1 * n2 * 100) / 100;
} else if (operator === '+') {
// 请补充代码：获取加法的结果
return Math.round((n1 + n2) * 100) / 100;
} else if (operator === '-') {
// 请补充代码：获取减法的结果
return Math.round((n1 - n2) * 100) / 100;
}
}
};
Calculator.init();
</script>
</body>
</html>
记得用long long
#include <iostream>
using namespace std;
int main() {
long long n;
while (cin >> n) { // 注意 while 处理多个 case
cout << n * (n - 1) - 1 << endl;
}
}
// 64 位输出请用 printf("%lld")
每次都把最大的提溜上来给他削平头，然后放回去
#include <iostream>
#include<bits/stdc++.h>
using namespace std;
long long a[100];
int main() {
int n;
while (cin >> n) { // 注意 while 处理多个 case
for(int i = 0; i < n; i ++){
cin >> a[i];
}
long long ans = 0;
while(true){
sort(a, a + n);
if(a[n - 1] < n){
break;
}
long long res = a[n - 1] / n;
a[n - 1] = a[n - 1] % n;
for(int i = 0; i < n - 1; i ++){
a[i] += res;
}
ans += res;
}
cout << ans << endl;
}
}
// 64 位输出请用 printf("%lld")