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validator/validator.cpp

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+#include "testlib.h"
+
+using namespace std;
+using ll = long long;
+
+const int MX = 1e9;
+
+int main(int argc, char *argv[]) {
+    registerValidation(argc, argv);
+
+    ll n = inf.readLong(1LL, MX, "N");
+    inf.readSpace();
+    ll m = inf.readLong(0, n * (n - 1), "M");
+    inf.readEoln();
+
+    set<pair<int, int> > edges;
+    for (ll i = 1; i <= m; i++) {
+        ll s, e;
+        double len;
+        s = inf.readLong(1LL, n);
+        inf.readSpace();
+        e = inf.readLong(1LL, n);
+        inf.readSpace();
+        len = inf.readDouble();
+        inf.readEoln();
+
+        ensuref(s != e, "s must not be equal to e: edge: %lld -> %lld", s, e);
+        ensuref(len >= 0,
+                "len must be greater than or equal to zero: %lld->%lld, %lf", s,
+                e, len);
+
+        ensuref(!edges.contains({s, e}),
+                "Edges must be unique: multiple edge %lld -> %lld", s, e);
+
+        edges.emplace(s, e);
+    }
+    inf.readEof();
+}