a

CSES - CSES Problem Set/Range_Queries/Range_Update_Query.cpp

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+//
+// Created by darian on 18.06.24.
+//
+
+#include <bits/stdc++.h>
+using namespace std;
+using ll = long long;
+
+
+
+void update_range(int a, int b, ll k, vector<ll> &dif) {
+    dif[a] += k;
+    if (b != dif.size() - 1) {
+        dif[b+1] -= k;
+    }
+}
+
+
+int main() {
+    int n, q; cin >> n >> q;
+    vector<ll> input(n);
+    vector<ll> difference;
+    for (auto &e: input){
+        cin >> e;
+        if (difference.size()) difference.push_back(e - input.back());
+        else difference.push_back(e);
+    }
+
+    for (int i{}; i < q; i++) {
+        int t; cin >> t;
+        if (t == 1) {
+            int a, b; ll u; cin >> a >> b >> u;
+            a--; b--;
+            update_range(a, b, u, difference);
+        }
+    }
+
+}