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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main() {
  4. 	int n,m,s=0,d=0,v;
  5. 	char c;
  6. 	scanf("%d %d",&n,&m);
  7. 	string st; cin>>st;
  8.  
  9. 	if(st[0]=='.'){ d++; s++; }
  10. 	for(int i=1;i<n;i++)
  11. 		if(i==n-1 && st[i]=='.' && st[i-1]!='.') ; 
  12. 		else if(st[i]=='.') { d++; if(st[i-1]!='.') s++; }
  13. 		else if( (i==1 && st[0]=='.') || (i!=1 && st[i-2]!='.') ) { d--; s--; }
  14.  
  15. 	for(i=0;i<m;i++){
  16. 		scanf("%d %c",&v,&c); // v-1 , c
  17. 		if(v==1){
  18. 			if(c!='.' && st[v-1]=='.' && st[v]=='.' ){
  19. 				if(st[v+1]=='.') d--;
  20. 				else { s--; d--; }
  21. 			}else if(c=='.' && st[v-1]!='.' && st[v]=='.'){
  22. 				if(st[v+1]!='.') { s++; d++; }
  23. 				else d++;
  24. 			}
  25. 		}else if(v==n){
  26. 			if(c!='.' && st[v-1]=='.' && st[v-2]=='.' ){
  27. 				if(st[v-3]=='.') d--;
  28. 				else { s--; d--; }
  29. 			}else if(c=='.' && st[v-1]!='.' && st[v-2]=='.'){
  30. 				if(st[v-3]!='.') { s++; d++; }
  31. 				else d++;
  32. 			}
  33. 		}else{
  34. 			if(c!='.' && st[v-1]=='.' ){
  35. 				if(st[v-2]=='.' && st[v]=='.')
  36. 			}else if(c=='.' && st[v-1]!='.'){
  37. 				if( (st[v-2]=='.' && st[v]!='.') || (st[v-2]!='.' && st[v]=='.') ){ d+=2; s++; }
  38. 				else if(st[v-2]=='.' && st[v]=='.'){
  39. 					if(v==2){
  40. 						if(st[v+1]=='.') d+=2;
  41. 						else{ d+=3; s++;}
  42. 					}else if(v==n-1){
  43. 						if(st[v-3]=='.') d+=2;
  44. 						else{ d+=3; s++;}
  45. 					}else{
  46.  
  47. 					}
  48. 				}
  49. 			}
  50. 		}
  51. 	}	
  52. //	printf("%d %d\n",d,s);
  53. 			/*
  54. 	for(i=0;i<m;i++){
  55. 		res=0,count=0;
  56. 		scanf("%d %c",&v,&c);
  57. 		s[v-1]=c;
  58. 		for(j=0;j<n;j++)
  59. 			if(s[j]=='.'){
  60. 				count++;
  61. 				if(j==(n-1) && count>=2) res+=(count-1);
  62. 			}else{
  63. 				if(count>=2) res+=(count-1);
  64. 				count=0;
  65. 			}
  66. 		printf("%d\n",res);
  67. 	}
  68. 			*/
  69.  
  70. 	return 0;
  71. }
Compilation error #stdin compilation error #stdout 0s 3460KB
comments (?)
stdin
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10 3
.b..bz.... // ..h..
1 h
3 c
9 f
compilation info 
prog.cpp: In function 'int main()':
prog.cpp:15:6: error: 'i' was not declared in this scope
  for(i=0;i<m;i++){
      ^
prog.cpp:36:4: error: expected primary-expression before '}' token
    }else if(c=='.' && st[v-1]!='.'){
    ^
stdout
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Standard output is empty
https://ideone.com/e0OFxx
http://c...content-available-to-author-only...s.com/contest/570/problem/C
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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