new file: P2367.cpp

P2367.cpp

@@ -0,0 +1,30 @@
+#include <bits/stdc++.h>
+using namespace std;
+int n, p;
+int a[5000005];
+int cha[5000005];
+int main()
+{
+    scanf("%d%d", &n, &p);
+    for (int i = 1; i <= n; ++i)
+    {
+        scanf("%d", &a[i]);
+        cha[i] = a[i] - a[i - 1];
+    }
+    for (int i = 1; i <= p; ++i)
+    {
+        int x, y, z;
+        scanf("%d%d%d", &x, &y, &z);
+        cha[x] += z;
+        cha[y + 1] -= z;
+    }
+    int minn = cha[1];
+    a[1] = cha[1];
+    for (int i = 2; i <= n; ++i)
+    {
+        a[i] = a[i - 1] + cha[i];
+        minn = min(a[i], minn);
+    }
+    printf("%d\n", minn);
+    return 0;
+}