A - Pokemon Master
Calem and Serena are pokemon masters. One day they decided to have a pokemon battle practice before Pokemon World Championships. Each of them has some pokemons in each's team. To make the battle more interesting, they decided to use a special rule to determine the winner: the team with heavier total weight will win the battle!
Input
There are multiple test cases. The first line of input contains an integer Tindicating the number of test cases. For each test case:
The first line contains two integers N and M (1 <= N, M <= 6), which describes that Calem has N pokemons and Serena has M pokemons.
The second line contains N integers indicating the weight of Calem's pokemons. The third line contains M integers indicating the weight of Serena's pokemons. All pokemons' weight are in the range of [1, 2094] pounds.
<h4< dd="">Output
For each test case, output "Calem" if Calem's team will win the battle, or "Serena" if Serena's team will win. If the two team have the same total weight, output "Draw" instead.
<h4< dd="">Sample Input
1 6 6 13 220 199 188 269 1014 101 176 130 220 881 396
代码：
#include<bits/stdc++.h> using namespace std; int main() { int T; scanf("%d",&T); while(T--) { int n,m; scanf("%d%d",&n,&m); int sum1=0,sum2=0; for(int i=1;i<=n;i++) { int x; scanf("%d",&x); sum1+=x; } for(int i=1;i<=m;i++) { int x; scanf("%d",&x); sum2+=x; } if(sum1==sum2) printf("Draw "); else if(sum1>sum2) printf("Calem "); else if(sum2>sum1) printf("Serena "); } return 0; }
C - Talented Chef
As we all know, Coach Gao is a talented chef, because he is able to cook M dishes in the same time. Tonight he is going to have a hearty dinner with his girlfriend at his home. Of course, Coach Gao is going to cook all dishes himself, in order to show off his genius cooking skill to his girlfriend.
To make full use of his genius in cooking, Coach Gao decides to prepare N dishes for the dinner. The i-th dish contains Ai steps. The steps of a dish should be finished sequentially. In each minute of the cooking, Coach Gao can choose at most Mdifferent dishes and finish one step for each dish chosen.
Coach Gao wants to know the least time he needs to prepare the dinner.
Input
There are multiple test cases. The first line of input contains an integer Tindicating the number of test cases. For each test case:
The first line contains two integers N and M (1 <= N, M <= 40000). The second line contains N integers Ai (1 <= Ai <= 40000).
<h4< dd="">Output
For each test case, output the least time (in minute) to finish all dishes.
<h4< dd="">Sample Input
2 3 2 2 2 2 10 6 1 2 3 4 5 6 7 8 9 10
<h4< dd="">Sample Output
3 10
代码：
#include <bits/stdc++.h> #define ll long long using namespace std; int main() { int T; scanf("%d",&T); while(T--) { int n,m; scanf("%d%d",&n,&m); int maxx=0; ll sum=0; for(int i=1;i<=n;i++) { int x; scanf("%d",&x); maxx=max(maxx,x); sum+=x; } ll ans=sum/m; if(sum%m) ans++; ans=max(ans,1LL*maxx); cout<<ans<<endl; } return 0; }
G - Ternary Calculation
Complete the ternary calculation.
Input
There are multiple test cases. The first line of input contains an integer Tindicating the number of test cases. For each test case:
There is a string in the form of "number1 operatora number2 operatorb number3". Each operator will be one of {'+', '-' , '*', '/', '%'}, and each number will be an integer in [1, 1000].
<h4< dd="">Output
For each test case, output the answer.
<h4< dd="">Sample Input
5 1 + 2 * 3 1 - 8 / 3 1 + 2 - 3 7 * 8 / 5 5 - 8 % 3
<h4< dd="">Sample Output
7 -1 0 11 3
Note
The calculation "A % B" means taking the remainder of A divided by B, and "A / B" means taking the quotient.
代码：
#include <bits/stdc++.h> using namespace std; int main() { int T; scanf("%d",&T); while(T--) { char op1,op2; int a,b,c; int ans; cin>>a>>op1>>b>>op2>>c; if(op1=='+') { if(op2=='+') ans=a+b+c; if(op2=='-') ans=a+b-c; if(op2=='*') ans=a+b*c; if(op2=='/') ans=a+b/c; if(op2=='%') ans=a+b%c; } if(op1=='-') { if(op2=='+') ans=a-b+c; if(op2=='-') ans=a-b-c; if(op2=='*') ans=a-b*c; if(op2=='/') ans=a-b/c; if(op2=='%') ans=a-b%c; } if(op1=='*') { if(op2=='+') ans=a*b+c; if(op2=='-') ans=a*b-c; if(op2=='*') ans=a*b*c; if(op2=='/') ans=a*b/c; if(op2=='%') ans=a*b%c; } if(op1=='/') { if(op2=='+') ans=a/b+c; if(op2=='-') ans=a/b-c; if(op2=='*') ans=a/b*c; if(op2=='/') ans=a/b/c; if(op2=='%') ans=a/b%c; } if(op1=='%') { if(op2=='+') ans=a%b+c; if(op2=='-') ans=a%b-c; if(op2=='*') ans=a%b*c; if(op2=='/') ans=a%b/c; if(op2=='%') ans=a%b%c; } cout<<ans<<endl; } return 0; }
J - What day is that day?
It's Saturday today, what day is it after 11 + 22 + 33 + ... + NN days?
Input
There are multiple test cases. The first line of input contains an integer Tindicating the number of test cases. For each test case:
There is only one line containing one integer N (1 <= N <= 1000000000).
<h4< dd="">Output
For each test case, output one string indicating the day of week.
<h4< dd="">Sample Input
2 1 2
<h4< dd="">Sample Output
Sunday Thursday
<h4< dd="">Hint
A week consists of Sunday, Monday, Tuesday, Wednesday, Thursday, Friday and Saturday.
代码：
#include<bits/stdc++.h> using namespace std; int p[22][22][2]; char t[8][22]={"Sunday" , "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}; int cal(int n) { int ans=0; for(int i=1;i<=6;i++) { if(i>n) break; int N=(n-i)/7; int a1=p[i][i][0],q=p[i][7][0],qn=p[q][(N+1)%6][0]; int tmp; if(q==1) tmp=N*a1+a1; else tmp=a1*(qn-1)*p[q-1][5][0]%7; ans+=tmp+7; ans%=7; } return ans; } int main() { for(int i=0;i<10;i++) { p[i][0][0]=p[i][0][1]=1; for(int j=1;j<10;j++) { p[i][j][0]=p[i][j-1][0]*i%7; p[i][j][1]=p[i][j-1][1]*i%5; } } //cout<<cal(1)<<endl; int T;scanf("%d",&T); while(T--) { int n;scanf("%d",&n); n=(cal(n)+6)%7; printf("%s ",t[n]); } }
#include <bits/stdc++.h> using namespace std; int T; char Day[10][10]={"Saturday","Sunday","Monday", "Tuesday", "Wednesday", "Thursday", "Friday"}; int all[550]; long long Pow(int a, int b) { long long ans = 1; while(b) { if(b % 2) { ans = (ans % 7) * (a % 7); b --; } else { a = (a % 7) * (a % 7); b /= 2; } } return ans % 7; } int main() { all[0] = 0; for(int i = 1; i <= 294; i ++) all[i] = (all[i - 1] + Pow(i, i)) % 7; scanf("%d", &T); while(T --) { long long N; scanf("%lld", &N); N %= 294; printf("%s ", Day[all[N]]); } return 0; }
这个训练的时候想着打表但是没打完 快速幂的时候忘记取模了 一会重写一个贴一下 打表找规律
1 4 6 4 3 1 0 1 1 4 2 1 6 0 1 2 5 1 5 1 0 1 4 1 4 4 6 0 1 1 3 2 6 1 0 1 2 2 1 2 6 0 （$N^N$ % 7 的规律）
L - Access System
For security issues, Marjar University has an access control system for each dormitory building.The system requires the students to use their personal identification cards to open the gate if they want to enter the building.
The gate will then remain unlocked for L seconds. For example L = 15, if a student came to the dormitory at 17:00:00 (in the format of HH:MM:SS) and used his card to open the gate. Any other students who come to the dormitory between [17:00:00, 17:00:15) can enter the building without authentication. If there is another student comes to the dorm at 17:00:15 or later, he must take out his card to unlock the gate again.
There are N students need to enter the dormitory. You are given the time they come to the gate. These lazy students will not use their cards unless necessary. Please find out the students who need to do so.
Input
There are multiple test cases. The first line of input contains an integer Tindicating the number of test cases. For each test case:
The first line contains two integers N (1 <= N <= 20000) and L (1 <= L <= 3600). The next N lines, each line is a unique time between [00:00:00, 24:00:00) on the same day.
<h4< dd="">Output
For each test case, output two lines. The first line is the number of students who need to use the card to open the gate. The second line the the index (1-based) of these students in ascending order, separated by a space.
<h4< dd="">Sample Input
3 2 1 12:30:00 12:30:01 5 15 17:00:00 17:00:15 17:00:06 17:01:00 17:00:14 3 5 12:00:09 12:00:05 12:00:00
<h4< dd="">Sample Output
2 1 2 3 1 2 4 2 2 3
代码：
#include <bits/stdc++.h> using namespace std; const int maxn = 1e6 + 10; int T; struct Node{ int tim; int id; }node[maxn]; bool cmp(const Node &a, const Node &b) { return a.tim < b.tim; } int main() { scanf("%d", &T); while(T --) { int N, L; scanf("%d%d", &N, &L); for(int i = 1; i <= N; i ++) { int h, m, s; scanf("%d:%d:%d", &h, &m, &s); int sum = h * 3600 + m * 60 + s; node[i].tim = sum; node[i].id = i; } sort(node + 1, node + 1 + N, cmp); vector<int> ans; int now = node[1].tim; ans.push_back(node[1].id); for(int i = 2; i <= N; i ++) { if(node[i].tim < now + L) continue; else { ans.push_back(node[i].id); now = node[i].tim; } } sort(ans.begin(), ans.end()); printf("%d ", ans.size()); for(int i = 0; i < ans.size(); i ++) printf("%d%s", ans[i], i != ans.size() - 1 ? " " : " "); } return 0; }
EF 是搜索 但是没想好怎么写！我会记得清题的