第一题
喝咖啡
#include<iostream>
#include<vector>
using namespace std;
int main()
{
int N,A,X;
while(cin>>N>>A>>X)
{
vector<int> times;
times.resize(N);
int sum = 0;
for(int i = 0;i<N;i++)
{
cin>>times[i];
sum = sum+times[i];
}
if(X > 8)
{
X = 8;
}
int speed_up_times = 60*A*X;
int no_speed_times = (8-X)*60;
if(speed_up_times + no_speed_times < sum)
{
cout<<0<<endl;
}
else
{
if(sum >= speed_up_times)
{
int left = sum-speed_up_times;
cout<<X*60+left<<endl;
}
else
{
int hours = sum/(60*A);
int left = sum-hours*60*A;
int minute = left/A;
if(left%A != 0)
{
minute++;
}
cout<<hours*60+minute<<endl;
}
}
}
}
第二题
挑零食
#include<iostream>
#include<vector>
using namespace std;
int main()
{
int N,T;
while(cin>>N>>T)
{
vector<int> prices;
vector<int> happys;
for(int i = 0;i<N;i++)
{
int price;
int happy;
cin>>price>>happy;
int count;
cin>>count;
while(count--)
{
prices.push_back(price);
happys.push_back(happy);
}
}
vector<int> dp;
dp.resize(T+1,0);
int result = 0;
for(int i = 0;i<prices.size();i++)
{
for(int j = T;j>=0;j--)
{
if(j-prices[i] == 0)
{
dp[j] = max(dp[j],happys[i]);
}
else if(j-prices[i] > 0 && dp[j-prices[i]] != 0)
{
dp[j] = max(dp[j-prices[i]]+happys[i],dp[j]);
}
if(dp[j] > result)
{
result = dp[j];
}
}
}
cout<<result<<endl;
}
}
第三题
搜索字符串
#include<iostream>
#include<vector>
#include<set>
using namespace std;
bool search(vector<vector<char>> &matrix,int i,int j,string &str,int index)
{
if(i<0 || j<0 || i>=matrix.size() || j>= matrix[i].size())
{
return false;
}
else
{
if(matrix[i][j] == '#')
{
return false;
}
else
{
if(index == str.length()-1 && matrix[i][j] == str[index])
{
return true;
}
if(matrix[i][j] != str[index])
{
return false;
}
else
{
char temp = matrix[i][j];
matrix[i][j] = '#';
bool result = search(matrix,i+1,j,str,index+1) || search(matrix,i,j+1,str,index+1) || search(matrix,i-1,j,str,index+1) || search(matrix,i,j-1,str,index+1);
matrix[i][j] = temp;
return result;
}
}
}
}
int main()
{
int N;
while(cin>>N)
{
vector<vector<char>> matrix;
matrix.resize(N);
set<string> Mset;
for(int i = 0;i<N;i++)
{
string temp;
cin>>temp;
for(auto &j:temp)
{
matrix[i].push_back(j);
}
}
int M;
cin>>M;
while(M--)
{
string str;
cin>>str;
for(int i = 0;i<matrix.size();i++)
{
for(int j = 0;j<matrix.size();j++)
{
if(search(matrix,i,j,str,0))
{
Mset.insert(str);
goto next;
}
}
}
next:
continue;
}
for(auto &i:Mset)
{
cout<<i<<endl;
}
}
}
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