CodeforcesRound #294 (Div.2)

519AAandBandChess *************************************** * ******** Author: fisty * CreatedTime: 201522821: 12: 09 * FileName:. cpp *************************************** * ******** # includeiostream # includecstring # includequ

519A A and B and Chess /********************************* * *************** Author: fisty * Created Time: 2015/2/28 21:12:09 * File Name:. cpp *************************************** * ********/# include iostream # include cstring # include dequ

519A	A and B and Chess

/*********************************************** * Author: fisty * Created Time: 2015/2/28 21:12:09 * File Name   : A.cpp *********************************************** */#include 
 
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                P;#define FOR(i, a, b) for(int i = a;i < b; i++)int _white(char c){ int n; switch(c){ case 'Q': n = 9;break; case 'R': n = 5;break; case 'B': n = 3;break; case 'N': n = 3;break; case 'P': n = 1;break; dafault: n = 0;break; } return n;}int _black(char c){ int n; switch(c){ case 'q': n = 9;break; case 'r': n = 5;break; case 'b': n = 3;break; case 'n': n = 3;break; case 'p': n = 1;break; dafault: n = 0;break; } return n;}int main() { //freopen("in.cpp", "r", stdin); cin.tie(0); ios::sync_with_stdio(false); string s; int white = 0;int black = 0; FOR(i, 0, 8){ cin >> s; for(int j = 0;j < s.length(); j++){ if(s[j] <= 'Z' && s[j] >= 'A'){ white += _white(s[j]); }else if(s[j] <= 'z' && s[j] >= 'a'){ black += _black(s[j]); } } } //Debug(white); //Debug(black); if(white > black){ cout << "White" << endl; }else if(white < black){ cout << "Black" << endl; }else{ cout << "Draw" << endl; } return 0;}
              
             
            
           
          
         
       
      
     
    
   
  
 

519B	A and B and Compilation Errors

Comparison between A and B, and comparison between B and C. Sort all, output the first different number and compare it out.

/*********************************************** * Author: fisty * Created Time: 2015/2/28 21:43:51 * File Name   : 294B.cpp *********************************************** */#include 
 
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                P;#define FOR(i, a, b) for(int i = a;i < b; i++)#define MAX_N 100100 int a[MAX_N], b[MAX_N], c[MAX_N];int main() { //freopen("in.cpp", "r", stdin); cin.tie(0); ios::sync_with_stdio(false); int n; cin >> n; Memset(a, 0); Memset(b, 0); Memset(c, 0); FOR(i, 0, n){ cin >> a[i]; } FOR(i, 0, n-1){ cin >> b[i]; } FOR(i, 0, n-2){ cin >> c[i]; } sort(a, a + n); sort(b, b + n-1); sort(c, c + n-2); for(int i = 0;i < n; i++){ if(a[i] != b[i]){ cout << a[i] << endl; break; } } for(int i = 0;i < n-1; i++){ if(b[i] != c[i]){ cout << b[i] << endl; break; } } return 0;}
              
             
            
           
          
         
       
      
     
    
   
  
 

519C	A and B and Team Training

If n> m, take n and take two m to get one,

/*********************************************** * Author: fisty * Created Time: 2015/2/28 21:54:12 * File Name   : 294C.cpp *********************************************** */#include 
 
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                P;#define FOR(i, a, b) for(int i = a;i < b; i++)#define MAX_N 8000int main() { //freopen("in.cpp", "r", stdin); cin.tie(0); ios::sync_with_stdio(false); int n, m; cin >> n >> m; int ans = 0; while(n >= 1 && m >= 1 && m + n >= 3){ ans++; if(n > m){ n -= 2; m--; }else{ m -= 2; n--; } } cout << ans << endl; return 0;}
              
             
            
           
          
         
       
      
     
    
   
  
 

519D	A and B and Interesting Substrings

First, maintain the prefix and. mp [I] [v] indicates the prefix ending with character I and the number of times V appears.

According to the requirement of the question, if the median of the characters u and v is zero, the prefix and the two are equal.

/*********************************************** * Author: fisty * Created Time: 2015/2/28 22:46:13 * File Name   : 294D.cpp *********************************************** */#include 
 
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                P;#define FOR(i, a, b) for(int i = a;i < b; i++)#define MAX_N 100000string s;int a[30];map
               
                 mp[MAX_N];int main() { //freopen("in.cpp", "r", stdin); cin.tie(0); ios::sync_with_stdio(false); for(int i = 0;i < 26; i++){ cin >> a[i]; } cin >> s; int n = s.length(); LL ans = 0; LL v = 0; for(int i = 0;i < n; i++){ ans += mp[s[i]-'a'][v]; v += a[s[i]-'a']; mp[s[i]-'a'][v]++; } cout << ans << endl; return 0;}