Merge pull request #178 from atcoder/issue/177

remove unsigned from the changed value of modint.val()

Author: yosupo06

.github/workflows/document.yml

@@ -31,9 +31,9 @@ jobs:
           VERSION: ${{ steps.version.outputs.VERSION_NAME }}
       - name: Publish to github pages
         if: ${{ github.event_name == 'push' }}
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
-          deploy_key: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./tools/generated
           destination_dir: ${{ steps.version.outputs.VERSION_NAME }}
       - name: Upload zip

atcoder/convolution.hpp

@@ -130,7 +130,7 @@ void butterfly_inv(std::vector<mint>& a) {
                     auto r = a[i + offset + p];
                     a[i + offset] = l + r;
                     a[i + offset + p] =
-                        (unsigned long long)(mint::mod() + l.val() - r.val()) *
+                        (unsigned long long)((unsigned int)(l.val() - r.val()) + mint::mod()) *
                         irot.val();
                     ;
                 }

atcoder/modint.hpp

@@ -48,7 +48,7 @@ struct static_modint : internal::static_modint_base {
         _v = (unsigned int)(v % umod());
     }
 
-    unsigned int val() const { return _v; }
+    int val() const { return _v; }
 
     mint& operator++() {
         _v++;
@@ -165,7 +165,7 @@ template <int id> struct dynamic_modint : internal::modint_base {
         _v = (unsigned int)(v % mod());
     }
 
-    unsigned int val() const { return _v; }
+    int val() const { return _v; }
 
     mint& operator++() {
         _v++;