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| #include<bits/stdc++.h>
using namespace std;
void solve(){
vector<double>a(4);
for(auto &i : a) cin >> i;
for(int i = 0; i < 4; i++){
for(int j = i + 1; j < 4; j++){
vector<double>res1;
res1.emplace_back(a[i] + a[j]);
res1.emplace_back(a[i] - a[j]);
res1.emplace_back(a[j] - a[i]);
res1.emplace_back(a[i] * a[j]);
res1.emplace_back(a[i] / a[j]);
res1.emplace_back(a[j] / a[i]);
{
for(int u = 0; u < 4; u++){
if(u == i || u == j) continue;
for(int k = 0; k < 6; k++){
vector<double>res2;
res2.emplace_back(res1[k] + a[u]);
res2.emplace_back(res1[k] - a[u]);
res2.emplace_back(a[u] - res1[k]);
res2.emplace_back(res1[k] * a[u]);
res2.emplace_back(res1[k] / a[u]);
res2.emplace_back(a[u] / res1[k]);
for(int v = 0; v < 4; v++){
if(v == i || v == j || v == u) continue;
for(int h = 0; h < 6; h++){
vector<double>res3;
res3.emplace_back(res2[h] + a[v]);
res3.emplace_back(res2[h] - a[v]);
res3.emplace_back(a[v] - res2[h]);
res3.emplace_back(res2[h] * a[v]);
res3.emplace_back(res2[h] / a[v]);
res3.emplace_back(a[v] / res2[h]);
for(int g = 0; g < 6; g++){
if(fabs(res3[g] - 24) < 1e-4){
auto show_op = [](string x, string y, int op) -> string{
string res;
res += "(";
if(op == 0) res += x + " + " + y;
if(op == 1) res += x + " - " + y;
if(op == 2) res += y + " - " + x;
if(op == 3) res += x + " * " + y;
if(op == 4) res += x + " / " + y;
if(op == 5) res += y + " / " + x;
res += ")";
return res;
};
string o1 = to_string((int)a[i]), o2 = to_string((int)a[j]),
o3 = to_string((int)a[u]), o4 = to_string((int)a[v]);
cout << show_op(show_op(show_op(o1, o2, k), o3, h), o4, g) << '\n';
return;
}
}
}
}
}
}
}
{
for(int u = 0; u < 4; u++){
if(u == i || u == j) continue;
for(int v = 0; v < 4; v++){
if(v == i || v == j || v == u) continue;
vector<double>res2;
res2.emplace_back(a[u] + a[v]);
res2.emplace_back(a[u] - a[v]);
res2.emplace_back(a[v] - a[u]);
res2.emplace_back(a[u] * a[v]);
res2.emplace_back(a[u] / a[v]);
res2.emplace_back(a[v] / a[u]);
for(int k = 0; k < 6; k++){
for(int h = 0; h < 6; h++){
vector<double>res3;
res3.emplace_back(res1[k] + res2[h]);
res3.emplace_back(res1[k] - res2[h]);
res3.emplace_back(res2[h] - res1[k]);
res3.emplace_back(res1[k] * res2[h]);
res3.emplace_back(res1[k] / res2[h]);
res3.emplace_back(res2[h] / res1[k]);
for(int g = 0; g < 6; g++){
if(fabs(res3[g] - 24) < 1e-4){
auto show_op = [](string x, string y, int op) -> string{
string res;
res += "(";
if(op == 0) res += x + " + " + y;
if(op == 1) res += x + " - " + y;
if(op == 2) res += y + " - " + x;
if(op == 3) res += x + " * " + y;
if(op == 4) res += x + " / " + y;
if(op == 5) res += y + " / " + x;
res += ")";
return res;
};
string o1 = to_string((int)a[i]), o2 = to_string((int)a[j]),
o3 = to_string((int)a[u]), o4 = to_string((int)a[v]);
cout << show_op(show_op(o1, o2, k), show_op(o3, o4, h), g) << '\n';
return;
}
}
}
}
}
}
}
}
}
cout << -1 << '\n';
}
signed main(){
ios::sync_with_stdio(0);
cin.tie(0);
solve();
return 0;
}
|
