More fixes

Author: adamant-pwn

cp-algo/graph/base.hpp

@@ -16,7 +16,7 @@ namespace cp_algo::graph {
             adj.push(u, (edge_index)size(edges));
             edges.push_back(e);
             if constexpr (undirected) {
-                adj.push(e.to, size(edges));
+                adj.push(e.to, (edge_index)size(edges));
             }
             edges.push_back(e.backedge(u));
         }
@@ -44,15 +44,14 @@ namespace cp_algo::graph {
             return std::views::iota(0, n());
         }
         auto edges_view() const {
-            return std::views::filter(
-                std::views::iota(0, 2 * m()),
+            return std::views::iota(0, 2 * m()) | std::views::filter(
                 [](edge_index e) {return !(e % 2);}
             );
         }
         auto const& incidence_lists() const {return adj;}
         edge_t const& edge(edge_index e) const {return edges[e];}
         node_index n() const {return (node_index)adj.size();}
-        edge_index m() const {return size(edges) / 2;}
+        edge_index m() const {return (edge_index)size(edges) / 2;}
     private:
         node_index v0;
         std::vector<edge_t> edges;

cp-algo/number_theory/discrete_log.hpp

@@ -15,10 +15,10 @@ namespace cp_algo::math {
         // a * b^x is periodic here
         using base = dynamic_modint<>;
         return base::with_mod(m, [&]() -> std::optional<uint64_t> {
-            size_t sqrtmod = std::max<size_t>(1, std::sqrt(m) / 2);
+            int sqrtmod = std::max(1, (int)std::sqrt(m) / 2);
             std::unordered_map<int64_t, int> small;
             base cur = a;
-            for(size_t i = 0; i < sqrtmod; i++) {
+            for(int i = 0; i < sqrtmod; i++) {
                 small[cur.getr()] = i;
                 cur *= b;
             }

cp-algo/number_theory/euler.hpp

@@ -3,7 +3,7 @@
 #include "factorize.hpp"
 namespace cp_algo::math {
     int64_t euler_phi(int64_t m) {
-        auto primes = factorize(m);
+        auto primes = to<std::vector>(factorize(m));
         std::ranges::sort(primes);
         auto [from, to] = std::ranges::unique(primes);
         primes.erase(from, to);