Java做的，代码结构没有丝毫优化，交流一下思路好了。。
1.喝咖啡调试bug。 就把所有bug加起来求的。。没感觉有啥难以调试的点
import java.util.Scanner;
public class dajiang1 {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int N = in.nextInt();
int A = in.nextInt();
int X = in.nextInt();
int total = 0;
int resultTime = 0;
for (int i = 0; i < N; i++) {
total += in.nextInt();
}
int temp = X;
for (int i = 0; i < X; i++) {
if(total - A*60 > 0){
total -= A*60;
resultTime += 60;
temp--;
}
}
if(temp > 0){
resultTime += Math.ceil((double)total/A);
System.out.println(resultTime);
}else{
if(total > 480 - X*60){
System.out.println(0);
return;
}else{
System.out.println(resultTime + total);
}
}
}
}
2。吃零食，动态规划，更新时判断零食还够不够
import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;
class food{
int price;
int satisfy;
int num;
public food(int price, int satisfy, int num) {
this.price = price;
this.satisfy = satisfy;
this.num = num;
}
}
class account {
int totalStatisfy;
int[] numbers;
public account(int totalStatisfy) {
this.totalStatisfy = totalStatisfy;
}
}
public class dajiang2 {
public static int N;
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
N = in.nextInt();
int T = in.nextInt();
account[] moneyMax = new account[T+1];
food[] foods = new food[N];
int result = 0;
for (int i = 0; i < N; i++) {
foods[i] = new food(in.nextInt(), in.nextInt(), in.nextInt());
}
moneyMax[0] = new account(0);
moneyMax[0].numbers = new int[N];
for (int i = 0; i < N; i++) {
moneyMax[0].numbers[i] = foods[i].num;
}
for (int i = 1; i <= T; i++) {
findMax(moneyMax, i, foods);
if(moneyMax[i].totalStatisfy > result) result = moneyMax[i].totalStatisfy;
}
System.out.println(result);
}
public static void findMax(account[] moneyMax, int point, food[] foods){
int max = 0;
moneyMax[point] = new account(0);
moneyMax[point].numbers = new int[N];
for (int i = 0; i < N; i++) {
moneyMax[point].numbers[i] = foods[i].num;
}
for (int i = 0; i < foods.length; i++) {
boolean whetherBuy = false;
if(point - foods[i].price >= 0 && moneyMax[point - foods[i].price].numbers[i] > 0){
if(moneyMax[point - foods[i].price].totalStatisfy + foods[i].satisfy > max){
max = moneyMax[point - foods[i].price].totalStatisfy + foods[i].satisfy;
moneyMax[point].totalStatisfy = max;
for (int j = 0; j < N; j++) {
moneyMax[point].numbers[j] = moneyMax[point - foods[i].price].numbers[j];
}
moneyMax[point].numbers[i]--;
}
}
}
}
}
3.字母表，递归。之前是64%。因为递归的时候漏了二维数组一些边界条件的判断，修改完不知道能有多少
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;
public class dajiang3 {
public static boolean flag = false;
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int N = in.nextInt();
in.nextLine();
char[][] charArray = new char[N][];
for (int i = 0; i < N; i++) {
String temp = in.nextLine();
charArray[i] = temp.toCharArray();
}
int M = in.nextInt();
in.nextLine();
String[] stringArray = new String[M];
ArrayList<String> resultArray = new ArrayList<>();
for (int i = 0; i < M; i++) {
stringArray[i] = in.nextLine();
flag = false;
for (int j = 0; j < charArray.length; j++) {
for (int k = 0; k < charArray[j].length; k++) {
if(charArray[j][k] == stringArray[i].charAt(0)){
ifOk(stringArray[i], 1, charArray, j, k);
}
}
}
if(flag) resultArray.add(stringArray[i]);
}
//之前用牛客考试的时候，有一次自定义ArrayList比较器，使用Colletions为ArrayList排序，自己IDE没问题，牛客显示数组越界，不知道为啥，有没有大佬告诉一下原因。。。
//所以现在考试排序都是复制到数组里用Arrays排序。
String[] result = new String[resultArray.size()];
for (int i = 0; i < resultArray.size(); i++) {
result[i] = resultArray.get(i);
}
Arrays.sort(result);
for (int i = 0; i < result.length; i++) {
System.out.println(result[i]);
}
}
public static void ifOk(String string, int place, char[][] charArray, int i, int j){
if(place == string.length()){
flag = true;
return;
}else{
if(i - 1 > 0 && j < charArray[i-1].length && charArray[i-1][j] == string.charAt(place)){
ifOk(string, place+1, charArray, i-1, j);
}
if(i + 1 < charArray.length && j < charArray[i+1].length && charArray[i+1][j] == string.charAt(place)){
ifOk(string, place+1, charArray, i+1, j);
}
if(j - 1 > 0 && i < charArray.length && charArray[i][j-1] == string.charAt(place)){
ifOk(string, place+1, charArray, i, j - 1);
}
if(j + 1 <charArray[i].length && i < charArray.length && charArray[i][j+1] == string.charAt(place)){
ifOk(string, place+1, charArray, i, j + 1);
}
}
}
}
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