feat: add exercises of 20/07/2020 exam

1 files changed, 63 insertions, 0 deletions

diff --git a/I_anno/Programmazione_2/exercises/exam_20_07_20/ex2.cpp b/I_anno/Programmazione_2/exercises/exam_20_07_20/ex2.cpp
new file mode 100644
index 0000000..aed25e4
--- /dev/null
+++ b/I_anno/Programmazione_2/exercises/exam_20_07_20/ex2.cpp
@@ -0,0 +1,63 @@
+#include<iostream>
+#include<sstream>
+#include<fstream>
+#include<queue>
+
+using namespace std;
+using pi = tuple<int, int, vector<int>>;
+
+class comp {
+public:
+    bool operator()(const pi& lhs, const pi& rhs) const {
+        auto xl = get<0>(lhs);
+        auto yl = get<0>(rhs);
+
+        auto il = get<1>(lhs);
+        auto jl = get<1>(rhs);
+        if(xl == yl)
+            return il > jl;
+        return xl > yl;
+    }
+};
+
+int main() {
+    ifstream in("input.txt");
+    ofstream out("output.txt");
+
+    for(int ts = 0; ts < 100; ++ts) {
+        int R, C;
+        in >> R >> C;
+        vector<vector<int>> v;
+        priority_queue<pi, vector<pi>, comp> pq;
+        int k;
+        for(int i = 0; i < R; ++i) {
+            v.push_back(vector<int>{});
+            for(int j = 0; j < C; ++j) {
+                in >> k;
+                v[i].push_back(k);
+            }
+        }
+
+        int index = 0;
+        for(auto const& i : v) {
+            int s = 0;
+            pi qq;
+            for(auto const& j : i)
+                s += j;
+            get<0>(qq) = s;
+            get<1>(qq) = index++;
+            get<2>(qq) = i;
+            pq.push(qq);
+        }
+        while(!pq.empty()) {
+            auto q = pq.top();
+            pq.pop();
+            for(auto const& i : get<2>(q))
+                out << i << ' ';
+        }
+        out << endl;
+    }
+    in.close();
+    out.close();
+    return 0;
+}