new file: P10460.cpp

P10460.cpp

@@ -0,0 +1,67 @@
+// 120
+#include <bits/stdc++.h>
+using namespace std;
+int t;
+struct node
+{
+    long long l, r, d;
+} a[200005];
+int n;
+int pre(long long x)
+{
+    int res = 0;
+    for (int i = 0; i < n; ++i)
+    {
+        if (x < a[i].l)
+            continue;
+        long long end = min(x, a[i].r);
+        if (end < a[i].l)
+            continue;
+        long long cnt = (end - a[i].l) / a[i].d + 1;
+        res ^= (cnt & 1);
+    }
+    return res;
+}
+long long at(long long p)
+{
+    long long cnt = 0;
+    for (int i = 0; i < n; ++i)
+    {
+        if (p < a[i].l || p > a[i].r)
+            continue;
+        if ((p - a[i].l) % a[i].d == 0)
+            ++cnt;
+    }
+    return cnt;
+}
+int main()
+{
+    scanf("%d", &t);
+    while (t--)
+    {
+        scanf("%d", &n);
+        long long maxE = 0;
+
+        for (int i = 0; i < n; ++i)
+        {
+            scanf("%lld%lld%lld", &a[i].l, &a[i].r, &a[i].d);
+            maxE = max(maxE, a[i].r);
+        }
+        if (pre(maxE) == 0)
+        {
+            puts("There's no weakness.");
+            continue;
+        }
+        long long l = 0, r = maxE;
+        while (l < r)
+        {
+            long long mid = (l + r) >> 1;
+            if (pre(mid) == 1)
+                r = mid;
+            else
+                l = mid + 1;
+        }
+        printf("%lld %lld\n", l, at(l));
+    }
+    return 0;
+}