#define _CRT_SECURE_NO_WARNINGS #define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; #define REP(a,b) for(long long a = 0;a < b;++a) int main() { long long ans = 0,ans_2 = 0; int n; cin >> n; REP(i, n) { int a = 0; string hoge; cin >>a>> hoge; int can_be = (12 * a) / 1000; int sasa = hoge.length(); if (sasa > can_be) { ans += can_be; ans_2 += sasa - can_be; } else { ans += sasa; } } cout << ans <<" "<