问一下哪里错了，谢谢！！！

liaojiaze7_2 @ 2024-12-04 17:16:12

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    long long cnt=1;
    cin>>n;
    int a=n,b=n;
    while( n!=0 ) {
        while( n!=0 ) {
            cnt*=n;
            n--;
        }
    }
    for( int i=1 ; i<=a ; i++ ) {
        cnt+=i;
    }
    cout<<cnt-b;
    return 0;
}

by _lxc__ @ 2024-12-04 17:18:44

用高精度

by _Vistion_ @ 2024-12-04 17:18:47

50的阶乘用int???

得学高精度

by YJC_____ @ 2024-12-07 16:55:24

@liaojiaze7_2

#include<bits/stdc++.h>
using namespace std;
int n,x;
int sum=0;
int pd(int y) {
    for(int i=2; i*i<=y; ++i) {
        if(y%i==0) return 0;
    }
    return 1;
}
int main() {
    scanf("%d",&n);
    if(n<2) {
        printf("0\n");
        return 0;
    } else if(n==2) {
        printf("2\n1\n");
        return 0;
    }
    for(int i=2; i<=n; ++i) {
        if(i%2==0&&i!=2) continue;
        if(sum+i>n) {
            printf("%d\n",x);
            return 0;
        }
        if(pd(i)) {
            printf("%d\n",i);
            sum+=i;
            x++;
        }
    }
    return 0;
}

用这个