```c #include <stdio.h> int main() { int n, s; scanf("%d %d", &n, &s); int a, b; scanf("%d %d", &a, &b); int x[n], y[n]; int count = 0; for (int i = 0; i < n; i++) { scanf("%d %d", &x[i], &y[i]); if (x[i] <= a + b && s >= y[i]) { s -= y[i]; count++; } } printf("%d\n", count); return 0; } ``` [2024-11-14 22:37:36 | AI写代码神器 | 159点数解答]