Codeforces Round #519 by Botan Investments

Posted 2021-01-16 chunibyo

Codeforces Round #519 by Botan Investments

 1 #include<bits/stdc++.h>
 2 #include<iostream>
 3 #include<cstdio>
 4 #include<cstdlib>
 5 #include<cstring>
 6 #include<cmath>
 7 #include<algorithm>
 8 #include<queue>
 9 #include<vector>
10 #include<map>
11 #define lson i<<1
12 #define rson i<<1|1
13 #define LS l,mid,lson
14 #define RS mid+1,r,rson
15 #define mem(a,x) memset(a,x,sizeof(a))
16 #define gcd(a,b) __gcd(a,b)
17 #define ll long long
18 #define ull unsigned long long
19 #define lowbit(x) (x&-x)
20 #define pb(x) push_back(x)
21 #define enld endl
22 #define mian main
23 #define itn int
24 #define prinft printf
25 #define Max(a,b,c) max(a,max(b,c))
26 #pragma GCC optimize(2)
27 //#pragma comment(linker, "/STACK:102400000,102400000")
28 
29 const double PI = acos (-1.0);
30 const ll INF = 0x3f3f3f3f3f3f3f3f;
31 const int EXP = 1e-8;
32 const int N = 1e5 + 5;
33 const int MOD = 1e9 + 7;
34 const int MAXN = 1e5+15;
35 const int Mod = 1e9 + 7;
36 
37 using namespace std;
38 
39 int sum=0;
40 int temp;
41 int maxn=0;
42 int main() {
43     //std::ios::sync_with_stdio(false);
44     //cin.tie(NULL);
45     int n=0;
46     while(cin>>n) {
47         sum=0;
48         for(int i=1;i<=n;++i) {
49             cin>>temp;
50             sum+=temp;
51             maxn=max(temp,maxn);
52         }
53         for(int k=maxn;;++k) {
54             if(k*n-sum>sum) {
55                 cout<<k<<endl;
56                 break;
57             }
58         }
59     }
60 }

A - Elections

 

 1 #include<bits/stdc++.h>
 2 #include<iostream>
 3 #include<cstdio>
 4 #include<cstdlib>
 5 #include<cstring>
 6 #include<cmath>
 7 #include<algorithm>
 8 #include<queue>
 9 #include<vector>
10 #include<map>
11 #define lson i<<1
12 #define rson i<<1|1
13 #define LS l,mid,lson
14 #define RS mid+1,r,rson
15 #define mem(a,x) memset(a,x,sizeof(a))
16 #define gcd(a,b) __gcd(a,b)
17 #define ll long long
18 #define ull unsigned long long
19 #define lowbit(x) (x&-x)
20 #define pb(x) push_back(x)
21 #define enld endl
22 #define mian main
23 #define itn int
24 #define prinft printf
25 #define Max(a,b,c) max(a,max(b,c))
26 #pragma GCC optimize(2)
27 //#pragma comment(linker, "/STACK:102400000,102400000")
28 
29 const double PI = acos (-1.0);
30 const int INF = 0x3f3f3f3f;
31 const int EXP = 1e-8;
32 const int N = 1e5 + 5;
33 const int MOD = 1e9 + 7;
34 const int MAXN = 1e3+15;
35 const int Mod = 1e9 + 7;
36 
37 using namespace std;
38 
39 int n;
40 int a[MAXN];
41 int ans[MAXN];
42 
43 bool check(int x)
44 {
45     for(int i=0;i+x<n;++i) {
46         if(a[i+1]-a[i]!=a[i+x+1]-a[i+x]) return false;
47     }
48     return true;
49 }
50 
51 int main() {
52     //std::ios::sync_with_stdio(false);
53     //cin.tie(NULL);
54     cin>>n;
55     for(int i=1;i<=n;++i) cin>>a[i];
56     int cnt=0;
57     a[0]=0;
58     for(int i=1;i<=n;++i) {
59         if(check(i)) ans[cnt++]=i;
60     }
61     cout<<cnt<<endl;
62     for(int i=0;i<cnt;++i ) {
63         if(i) cout<<‘ ‘;
64         cout<<ans[i];
65     }cout<<endl;
66 }

B - Lost Array

 

 1 //#include<bits/stdc++.h>
 2 #include<iostream>
 3 #include<cstdio>
 4 #include<cstdlib>
 5 #include<cstring>
 6 #include<cmath>
 7 #include<algorithm>
 8 #include<queue>
 9 #include<vector>
10 #include<map>
11 #define lson i<<1
12 #define rson i<<1|1
13 #define LS l,mid,lson
14 #define RS mid+1,r,rson
15 #define mem(a,x) memset(a,x,sizeof(a))
16 #define gcd(a,b) __gcd(a,b)
17 #define ll long long
18 #define ull unsigned long long
19 #define lowbit(x) (x&-x)
20 #define pb(x) push_back(x)
21 #define enld endl
22 #define mian main
23 #define itn int
24 #define prinft printf
25 #define Max(a,b,c) max(a,max(b,c))
26 #pragma GCC optimize(2)
27 //#pragma comment(linker, "/STACK:102400000,102400000")
28 
29 const double PI = acos (-1.0);
30 const ll INF = 0x3f3f3f3f3f3f3f3f;
31 const int EXP = 1e-8;
32 const int N = 1e5 + 5;
33 const int MOD = 1e9 + 7;
34 const int MAXN = 1e5+15;
35 const int Mod = 1e9 + 7;
36 
37 using namespace std;
38 
39 string s;
40 int a[MAXN];
41 
42 int main() {
43     std::ios::sync_with_stdio(false);
44     cin.tie(NULL);
45 
46     cin>>s;
47 
48     if(s.size()==1) {cout<<1<<endl; return 0;}
49 
50     mem(a,0);
51     for(int i=0;i<s.size()-1;++i) {
52         if(i)cout<<‘ ‘;
53         if(s[i]!=s[i+1]) cout<<1;
54         else cout<<0;
55     }
56     if(s[s.size()-1]==‘a‘) cout<<" 1"<<endl;
57     else cout<<" 0"<<endl;
58 }

C - Smallest Word

 

 1 #include<bits/stdc++.h>
 2 #include<iostream>
 3 #include<cstdio>
 4 #include<cstdlib>
 5 #include<cstring>
 6 #include<cmath>
 7 #include<algorithm>
 8 #include<queue>
 9 #include<vector>
10 #include<map>
11 #define lson i<<1
12 #define rson i<<1|1
13 #define LS l,mid,lson
14 #define RS mid+1,r,rson
15 #define mem(a,x) memset(a,x,sizeof(a))
16 #define gcd(a,b) __gcd(a,b)
17 #define ll long long
18 #define ull unsigned long long
19 #define lowbit(x) (x&-x)
20 #define pb(x) push_back(x)
21 #define enld endl
22 #define mian main
23 #define itn int
24 #define prinft printf
25 #define Max(a,b,c) max(a,max(b,c))
26 #pragma GCC optimize(2)
27 //#pragma comment(linker, "/STACK:102400000,102400000")
28 
29 const double PI = acos (-1.0);
30 const ll INF = 0x3f3f3f3f3f3f3f3f;
31 const int EXP = 1e-8;
32 const int N = 1e5 + 5;
33 const int MOD = 1e9 + 7;
34 const int MAXN = 1e5+15;
35 const int Mod = 1e9 + 7;
36 
37 using namespace std;
38 
39 int n,m;
40 int a[12][MAXN];
41 int pre[12][MAXN];
42 ll ans[MAXN];
43 ll q;
44 
45 int main() {
46     std::ios::sync_with_stdio(false);
47     cin.tie(NULL);
48 
49     cin>>n>>m;
50     mem(ans,0);
51     for(int i=1; i<=m; ++i) {
52         for(int j=1; j<=n; ++j) {
53             cin>>a[i][j];
54             if(j-1==0)
55                 pre[i][a[i][j]]=0;
56             else
57                 pre[i][a[i][j]]=a[i][j-1];
58 
59         }
60     }
61     q=n;
62     for(int i=2; i<=n; ++i) {
63         ll cnt=0;
64         for(int j=1; j<m; ++j) {
65             if(pre[j][a[m][i]]==pre[m][a[m][i]])
66                 cerr<<++cnt<<endl;
67                 //++cnt;
68         }
69         if(cnt==m-1)
70             ans[i]=ans[i-1]+1;
71         q+=ans[i];
72     }
73     cout<<q<<endl;
74 
75 }

D - Mysterious Crime