为什么编译失败啊

RT

代码：

#include<bits/stdc++.h>
using namespace std;

int main() {
    int n;
    cin>>n;
    switch(n) {
        case 1:
            cout<<"I love Luogu!"<<endl;
            break;
        case 2:
            cout<<2+4<<" "<<10-2-4<<endl;
            break;
        case 3:
            cout<<int(14/4)<<" "<<" "<<14-int(14/4)*4<<endl;
            break;
        case 4:
            printf("%.3lf",500.0/3);
            break;
        case 5:
            cout<<(260+220)/(12+20)<<endl;
            break;
        case 6:
            cout<<sqrt(6*6+9*9)<<endl;
            break;
        case 7:
            cout<<100+10<<" "<<100+10-20<<" "<<0<<endl;
            break;
        case 8:
            cout<<5*1.0*2*3.141593<<" "<<3.141593*5*5<<" "<<4.0/3*3.141593*3*3*3<<endl;
            break;
        case 9:
            int n=4,peach=1;
            for(int i=0; i<n-1; i++) {
                peach++;
                peach*=2;
            }
            cout<<peach<<endl;
            break;
        case 10:
            cout<<9<<endl;
            break;
        case 11:
            cout<<100*1.0/(5+8)<<endl;
            break;
        case 12:
            cout<<int('M'-'A'+1)<<endl<<char('A'-1+18)<<endl;
            break;
        case 13:
            cout<<pow((4.0/3*3.141593*4*4*4)+(4.0/3*3.141593*10*10*10),1.0/3)<<endl;
            break;
        case 14:
            cout<<50<<endl;
            break;
    }
    return 0;
}