'commit'

TangDou/Topic/HDU3631.cpp

@@ -13,22 +13,22 @@ void floyd(int k) {
                 mp[i][j] = mp[i][k] + mp[k][j];
 }
 int main() {
+    // 加快读入
+    ios::sync_with_stdio(false), cin.tie(0);
     while (cin >> n >> m >> q && n + m + q) {
         if (t) printf("\n"); // 谜之格式
         printf("Case %d:\n", ++t);
         memset(mp, inf, sizeof mp);
         memset(flag, false, sizeof flag);
-        for (int i = 0; i <= n; ++i)
+        for (int i = 0; i <= n; i++) mp[i][i] = 0;
-            mp[i][i] = 0;
         while (m--) {
-            scanf("%d %d %d", &u, &v, &w);
+            cin >> u >> v >> w;
-            if (w < mp[u][v])
+            if (w < mp[u][v]) mp[u][v] = w;
-                mp[u][v] = w;
         }
         while (q--) {
-            scanf("%d", &w);
+            cin >> w;
             if (w == 0) {
-                scanf("%d", &u);
+                cin >> u;
                 if (flag[u])
                     printf("ERROR! At point %d\n", u);
                 else {
@@ -36,7 +36,7 @@ int main() {
                     floyd(u);
                 }
             } else {
-                scanf("%d %d", &u, &v);
+                cin >> u >> v;
                 if (!(flag[u] && flag[v]))
                     printf("ERROR! At path %d to %d\n", u, v);
                 else if (mp[u][v] == inf)