#include #include #include #include #include #include #include #include #include #include #include #include #include #include #define N 1000 #define re(i,n) for(int i=0;i<(n);i++) #define rep(i,a,b) for(int i=(a);i<(b);i++) #define fe(i,n,f) for_each(i,n,f) #define bw(a,b,c) (((a)<=(b))&&((b)<=(c))) using namespace std; typedef long long ll; typedef unsigned long long ull; int main(void){ int n; int t; string s; int a=0,b=0; cin>>n; re(i,n){ cin>>t>>s; int c=(double)t/1000.0*12.0; a+=min(c,(int)s.size()); b+=s.size(); } cout<