字节跳动笔试100-100-100-000

第一题：闹钟题

#include
#include
#include
using namespace std;
int main(){
    int n;
    cin >> n;
    vector nums;
    int h,m;
    for(int i=0;i<n;i++){
        cin >> h >> m;
        nums.push_back(h*60+m);
    }
    int x, t;
    cin >> x;
    cin >> h >> m;
    t = h*60+m;
    int res;
    for(int i=nums.size()-1;i>=0;i--){
        if(nums[i]+x<=t){
            res = nums[i];
            break;
        }
    }
    cout << res/60 << " " << res%60 << endl;
    return 0;
}
/*
3
5 0
6 0
7 0
59
6 59
*/

第二题：加密

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <iterator>

using namespace std;


int main() {
 int n, k;
 string s;

 cin >> n >> k;
 cin >> s;

 string ret(n, 0);

 int acc_sum = 0;
 for (int i = 0; i < n; ++i) {
  int v = s[i] - '0';

  if (0 == i)
   ret[0] = v + '0';
  else if (0 == v)
   ret[i] = acc_sum + '0';
  else
   ret[i] = !acc_sum + '0';

  acc_sum ^= ret[i] - '0';
  if (i >= k-1) acc_sum ^= ret[i - k + 1] - '0';
 }
 cout << ret << endl;

 return 0;
}

第三题：发奖金

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;


int main(){
    int n;
    cin >> n;
    vector<int> nums;
    int v;
    for(int i=0;i<n;i++){
        cin >> v;
        nums.push_back(v);
    }
    vector<int> price(n, 100);
    for(int i=1;i<n;i++){
        if(nums[i]>nums[i-1]){
            price[i] = price[i-1] + 100;
        }
    }

    for(int i=n-2;i>=0;i--){
        if(nums[i]>nums[i+1]){
            price[i] = max(price[i], price[i+1] + 100);
        }
    }
    int res=0;
    for(auto p:price) res += p;
    cout << res << endl;

    return 0;
}

/*
4
3 9 2 7
*/

第四题：真的不会，哭唧唧！！！