src/8/31/P2704.cpp

@@ -1,81 +0,0 @@
-#include <algorithm>
-#include <iostream>
-#include <string>
-#include <vector>
-
-
-static inline constexpr int popcount(int x) {
-    return __builtin_popcount(x);
-}
-
-int main() {
-    std::ios_base::sync_with_stdio(false);
-    std::cin.tie(NULL);
-
-    int n, m;
-    std::cin >> n >> m;
-
-    std::vector<int> map(n + 1, 0);
-    for (int i = 1; i <= n; ++i) {
-        std::string row;
-        std::cin >> row;
-        for (int j = 0; j < m; ++j) {
-            if (row[j] == 'H') {
-                map[i] |= (1 << j);
-            }
-        }
-    }
-
-    std::vector<int> states;
-    std::vector<int> counts;
-    for (int i = 0; i < (1 << m); ++i) {
-
-        if (!((i << 1) & i) && !((i << 2) & i)) {
-            states.push_back(i);
-            counts.push_back(popcount(i));
-        }
-    }
-    int num = states.size();
-
-    std::vector<std::vector<std::vector<int>>> dp(n + 1, std::vector<std::vector<int>>(num, std::vector<int>(num, 0)));
-
-    for (int i = 1; i <= n; ++i) {
-
-        for (int j = 0; j < num; ++j) {
-            int si = states[j];
-
-            if (si & map[i]) {
-                continue;
-            }
-
-            for (int k = 0; k < num; ++k) {
-                int sim1 = states[k];
-
-                if (si & sim1) {
-                    continue;
-                }
-
-                for (int l = 0; l < num; ++l) {
-                    int sim2 = states[l];
-
-                    if ((si & sim2) || (sim1 & sim2)) {
-                        continue;
-                    }
-
-                    dp[i][j][k] = std::max(dp[i][j][k], dp[i - 1][k][l] + counts[j]);
-                }
-            }
-        }
-    }
-
-    int ans = 0;
-    for (int j = 0; j < num; ++j) {
-        for (int k = 0; k < num; ++k) {
-            ans = std::max(ans, dp[n][j][k]);
-        }
-    }
-
-    std::cout << ans << std::endl;
-
-    return 0;
-}

src/test.cpp

@@ -1,8 +1,10 @@
-#include <iostream>
-using namespace std;
-
+#include <cstdio>
 int main(){
-    int a = 1;
-    a<<=32;
-    cout<<a<<"\n";
+    int a=0;
+    char* c = (char*)&a;
+    c[0]=0x1f;
+    c[1]=0x1f;
+    c[2]=0x1f;
+    c[3]=0x1f;
+    printf("%d\n",a);
 }