#include <fstream>
#include <cstring>
#include <iostream>

using namespace std;

const int MAX = 105;
const int INF = 0x3f3f3f3f;

#define A first
#define B second

ofstream out("lapte.out");

int N, L, ans;
pair<int, int> V[MAX];
int dp[MAX][MAX], need[MAX][MAX];

void citire() {
    ifstream in("lapte.in");
    in >> N >> L;
    for(int i = 1; i <= N; i++) 
        in >> V[i].A >> V[i].B;
    in.close();
}

void initialize() {
    memset(dp, -1, sizeof(dp));
    dp[0][0] = 0;
}

void dinamica(int maximumTime);

int solve() {
    for(int ans = 0; ans <= 100; ans++) {
        initialize();
        dinamica(ans);
        if(dp[N][L] >= L) return ans;
    }
}

void dinamica(int maximumTime) {
    for(int i = 1; i <= N; i++) 
        for(int j = 0; j <= L; j++) {
            dp[i][j] = 0;
            for(int h = 0; h <= j && V[i].A * h <= maximumTime; h++) {
                int timeLeft = maximumTime - V[i].A * h, B_Drank = timeLeft / V[i].B;
                if(dp[i - 1][j - h] != -1 && dp[i - 1][j - h] + B_Drank > dp[i][j]) {
                    dp[i][j] = dp[i - 1][j - h] + B_Drank;
                    need[i][j] = h;
                }
            }
        }
}

void print_data(int player, int A) {
    if(player > 1) print_data(player - 1, A - need[player][A]);
    out << need[player][A] << " " << (ans - need[player][A] * V[player].A) / V[player].B << "\n";
}

void afisare() {
    out << ans << "\n";
    print_data(N, L);
}

int main() {
    citire();
    ans = solve();
    afisare();
}