help на C++номера 3,4

3)

include lt;iostreamgt;

include lt;stringgt;

int main()

std::string s;

getline(std::cin , s);

std::string temp = s;

for(int i = 0 ; i != s.size() ; ++i)

temp[i] = (char)((int)s[i] - 1);

std::coutlt;lt;temp;

return 0;

4))

include lt;iostreamgt;

include lt;vectorgt;

include lt;stringgt;

int main()

int n;

std::cingt;gt;n;

std::vectorlt;std::stringgt; list(n);

for(int i = 0 ; i != list.size(); ++i)

getline(std::cin,list[i]);

int cnt = 0;

for(auto a: list)

for(auto b : a)

if(b == '2' b == '3')

cnt++;

break;

std::coutlt;lt;cnt;

return 0;