Featured image of post Codeforces Round #715 (Div. 2)

Codeforces Round #715 (Div. 2)

小号 RANK 281,1584 → 1706

A - Average Height

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#include<bits/stdc++.h>
//#define int long long//__int128
#define mmst0(x) memset(x,0,sizeof(x))
#define mmst3f(x) memset(x,0x3f,sizeof(x))
#define pb(x) emplace_back(x)
#define mkp(x, y) make_pair(x, y)
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef long double rld;
typedef unsigned long long ull;

const rld eps = 1e-6;
const int INF=0x3f3f3f3f;//0x3f3f3f3f3f3f3f3f;//LLINF

int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}
//void prt(int x){if(x<0){putchar('-');x=-x;}if(x>9)prt(x/10);putchar((char)(x%10+'0'));}

int n;
int a[10000];

void work()
{
    n=read();
    for(int i=1;i<=n;i++)a[i]=read();
    for(int i=1;i<=n;i++) if(a[i]%2)printf("%d ",a[i]);
    for(int i=1;i<=n;i++) if(a[i]%2==0)printf("%d ",a[i]);
    printf("\n");
    return;
}

signed main()
{
    //ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); //freopen(".in", "r", stdin);//freopen(".out", "w", stdout);
    signed T=read();
    for(signed Case=1; Case<=T; Case++)
    {
        //printf("Case %d: ",Case);
        work();
    }
    return 0;
}

B - TMT Document

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#include<bits/stdc++.h>
//#define int long long//__int128
#define mmst0(x) memset(x,0,sizeof(x))
#define mmst3f(x) memset(x,0x3f,sizeof(x))
#define pb(x) emplace_back(x)
#define mkp(x, y) make_pair(x, y)
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef long double rld;
typedef unsigned long long ull;

const rld eps = 1e-6;
const int INF=0x3f3f3f3f;//0x3f3f3f3f3f3f3f3f;//LLINF

int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}
//void prt(int x){if(x<0){putchar('-');x=-x;}if(x>9)prt(x/10);putchar((char)(x%10+'0'));}

int n;
string s;

void work()
{
    cin>>n>>s;int mx=0;
    stack<char> st;
    for(int i=0;i<(int)s.size();i++)
    {
        if(s[i]=='T')
        {
            st.push('T');
        }
        if(s[i]=='M' )
        {
            mx++;
            if(!st.empty())
            {
                st.pop();
            }
            else
            {
                cout<<"NO"<<endl;
                return;
            }
        }
    }
    while(mx--)st.pop();
    if(!st.empty())
    {
        cout<<"NO"<<endl;
        return;
    }
    for(int i=(int)s.size()-1;i>=0;i--)
    {
        if(s[i]=='T')
        {
            st.push('T');
        }
        if(s[i]=='M' )
        {
            mx++;
            if(!st.empty())
            {
                st.pop();
            }
            else
            {
                cout<<"NO"<<endl;
                return;
            }
        }
    }
    cout<<"YES"<<endl;
    return;
}

signed main()
{
    //ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); //freopen(".in", "r", stdin);//freopen(".out", "w", stdout);
    signed T;cin>>T;
    for(signed Case=1; Case<=T; Case++)
    {
        //printf("Case %d: ",Case);
        work();
    }
    return 0;
}

C - The Sports Festival

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#include<bits/stdc++.h>
#define int long long//__int128
#define mmst0(x) memset(x,0,sizeof(x))
#define mmst3f(x) memset(x,0x3f,sizeof(x))
#define pb(x) emplace_back(x)
#define mkp(x, y) make_pair(x, y)
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef long double rld;
typedef unsigned long long ull;

const rld eps = 1e-6;
const int INF=0x3f3f3f3f;//0x3f3f3f3f3f3f3f3f;//LLINF

int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}
//void prt(int x){if(x<0){putchar('-');x=-x;}if(x>9)prt(x/10);putchar((char)(x%10+'0'));}

void work()
{
    int n=read();
    vector<int> a(n);
    for (int i=0;i<n;i++)a[i]=read();
    sort(a.begin(), a.end());
    vector<vector<int> > dp(n, vector<int>(n));
    for (int d=1;d<n;d++)
        for (int i=0;i+d<n;i++)
            dp[i][i+d]=min(dp[i][i+d-1],dp[i+1][i+d])+a[i+d]-a[i];
    cout<<dp[0][n-1]<<endl;
    return;
}

signed main()
{
    //ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); //freopen(".in", "r", stdin);//freopen(".out", "w", stdout);
    signed T=1;
    for(signed Case=1; Case<=T; Case++)
    {
        //printf("Case %d: ",Case);
        work();
    }
    return 0;
}

D - Binary Literature

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#include <bits/stdc++.h>
using namespace std;
int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}
int n;
int a[3][501009];

string buildx(int x,int y,int cxx)
{
    string tmp1=""; int ptr=1;
    for(int i = 1; i <= 2 * n; i++)
        if(a[y][i] == cxx)
        {
            while(ptr <= 2 * n && a[x][ptr] != a[y][i]) tmp1 += a[x][ptr++] ? "1" : "0";
            tmp1 += a[y][i] ? "1" : "0";
            ptr++;
        }
        else tmp1 += a[y][i] ? "1" : "0";
    while(ptr <= 2 * n) tmp1 += a[x][ptr++] ? "1" : "0";
    return tmp1; 
}
string build(int x, int y)
{
    string tmp1 =buildx(x,y,0),tmp2 =buildx(x,y,1);
    if(tmp1.size() < tmp2.size()) return tmp1;
    else return tmp2;
}
void work()
{
    n = read();
    for(int j = 0; j < 3; j++)
        for(int i = 1; i <= 2 * n; i++)
            scanf("%1d", &a[j][i]);
    string t1 = build(0, 1),t2 = build(0, 2),t3 = build(1, 2);
    if(t3.size() < t2.size()) swap(t3, t2);
    if(t2.size() < t1.size()) swap(t2, t1);
    cout << t1 << endl;
}
signed main()
{
    int Case = read();
    while(Case--) work();
    return 0;
}

E - Almost Sorted

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#include <bits/stdc++.h>
#define int long long
#define mmst0(x) memset(x,0,sizeof(x))
#define mmst3f(x) memset(x,0x3f,sizeof(x))
#define pb(x) emplace_back(x)
#define mkp(x, y) make_pair(x, y)
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef long double rld;
typedef unsigned long long ull;

const rld eps = 1e-6;
const int INF=0x3f3f3f3f;//0x3f3f3f3f3f3f3f3f;//LLINF

int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}

int n,k;
int a[100003];

void work()
{
    n=read();k=read()-1;
    if (n <= 61 && (int)1<<(n-1) <=k)
    {
        printf("-1\n");
        return;
    }
    iota(a+1, a+n+1, 1);
    for (int i=60,j;i>=0;i=j)
    {
        j = i-1;
        if (~(k>>i)&((int)1)) continue;
        while (j >= 0 && ((k>>j)&1))j--;
        reverse(a+n-1-i, a+n-j);
    }
    for (int i=1;i<=n;i++) printf("%lld%c",a[i]," \n"[i==n]);
    return;
}

signed main()
{
    int T=read();
    while(T--)work();
    return 0;
}
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