import std.stdio, std.array, std.string, std.conv, std.algorithm; import std.typecons, std.range, std.random, std.math, std.container; import std.numeric, std.bigint, core.bitop, std.bitmanip; immutable int MAX = 10001; immutable int INF = 1 << 29; void main() { auto N = readln.chomp.to!int; auto V = N.iota.map!(_ => readln.split.map!(to!int).array).array; auto dp = new int[][](2, MAX); int cur = 0, tar = 1; foreach (i; 0..N) { fill(dp[tar], INF); foreach (j; 0..MAX) { dp[tar][j] = min(dp[tar][j], dp[cur][j] + V[i][1]); if (j + V[i][0] < MAX) dp[tar][j+V[i][0]] = min(dp[tar][j+V[i][0]], dp[cur][j]); } swap(cur, tar); } MAX.iota.map!(i => max(i, dp[cur][i])).reduce!min.writeln; }