12614 - Game Shopping

#include <stdio.h>

int main(){
    int n, m, c[1001], a[1001];
    scanf("%d%d", &n, &m);
    for(int i = 0 ; i < n; ++i){
        scanf("%d", &c[i]);
    }
    for(int j = 0; j < m; ++j){
        scanf("%d", &a[j]);
    }
    int cnt = 0, j = 0;
    for(int i = 0; i < n; ++i){
        if(a[j] >= c[i]){
            cnt++;
            j++;
            //printf("cnt = %d, a[j] = %d\n", cnt ,a[j]);
        }
    }
    printf("%d\n", cnt);
}