diff options
Diffstat (limited to 'recursionTest.cpp')
| -rw-r--r-- | recursionTest.cpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/recursionTest.cpp b/recursionTest.cpp new file mode 100644 index 0000000..ae3ab32 --- /dev/null +++ b/recursionTest.cpp @@ -0,0 +1,47 @@ +#include<bits/stdc++.h> + +using namespace std; + +string ans; + +bool solve(vector<int> v,int idx, int target, int sum, string opts) { + if(idx == v.size() - 1) { + if(sum == target){ + ans = opts; + return true; + } + return false; + } + else { + int nxt = idx + 1; + bool plus = solve(v, nxt, target, sum + v[nxt],opts + "+"); + bool minus = solve(v, nxt, target, sum - v[nxt], opts + "-"); + bool mult = solve(v, nxt, target, sum * v[nxt], opts + "*"); + bool div = solve(v, nxt, target, sum / v[nxt], opts + "/"); + return plus || minus || mult || div; + } + +} + +int main() { + int n, target; + cin >> n >> target; + vector<int> v(n); + string opts = ""; + for(int &x : v) { + cin >> x; + } + if(solve(v, 0, target, v[0], opts)) { + for(int i = 0; i < v.size(); i++) { + if (i == v.size() - 1) { + cout << v[i]; + } + else { + cout << v[i] << " " << ans[i] << " "; + } + } + cout << '\n'; + } + + return 0; +} |
