// I AM A MUSLIM
#include "bits/stdc++.h"
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#define fast_io std::ios::sync_with_stdio(0);std::cin.tie(0)
#define lli long long int
#define flush fflush(stdout)
#define new_line printf("\n")
#define yn(a, b) printf("%s\n", a >= b ? "Yes":"No")
#define safe_mod(a, M) ((a%M+M)%M)
// #define int lli
using pii = std::pair<int,int>;
const int MOD = 1000000007;
const int mxN = 100100;
signed main() {
int testCases=1;
// scanf("%d",&testCases);
for (int TC = 1; TC <= testCases; TC++) {
int n, r;
scanf("%d %d",&n,&r);
for (int i = 0, d, a; i < n; i++) {
scanf("%d %d",&d,&a);
if (d == 1) {
if (r >= 1600 && r <= 2799) r += a;
} else {
if (r >= 1200 && r <= 2399) r += a;
}
}
printf("%d", r);
}
return 0;
}
/*
*/