为什么90分？？？

#include<iostream>
#include<cstdio>
using namespace std;
int n,s1=-1,s2=-1,t1,t2,ans1,ans2,ans3;
int main() {
    cin>>n;
    if (n%14==0) {
    cout<<n/(7+4+3)<<' '<<n/(7+4+3)<<' '<<n/(7+4+3);
    return 0;
    }
    for (int k=0; k<=7146; k++)
        for (int j=0; j<=7146; j++) {
        int i=n-k*7-j*4;
        i/=3;
        if (k*7+j*4+i*3==n&&i>=0)
            t1=min(i,min(j,k)),t2=k+j+i;
        if (t1>s1) {
            s2=t2,ans1=k,ans2=j,ans3=i;
            s1=t1;
        } else if (t1==s1) {
            if (t2>s2)
                s2=t2,ans1=k,ans2=j,ans3=i;
                s1=t1;
        }
    }
    if (s2==-1||s2==0)
    cout<<"−1";
    else
    cout<<ans1<<' '<<ans2<<' '<<ans3;
    return 0;
}