#include <iostream> #include <cstring> #include <cstdio> #include <algorithm> using namespace std; int main() { int n; int a,b; while(cin >> n) { int ans = 999999; int s = 0; if(n == 0) { break; } for(int i = 1; i<= n; i++) { cin >> a >>b; if(b >= 0) { double aa = (4500/(a*10.0/36.0)); if(aa - (int)aa > 0.0) aa++; s = aa + b; if(s < ans) ans = s; } } printf("%d\n",ans); } return 0; } |
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