diff --git a/src/Makefile b/src/Makefile
index e606f23..d45c22b 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2,6 +2,7 @@
 
 CXX ?= g++
 CXXFLAGS ?= -std=c++17 -Wall -Wextra -O2
+LDFLAGS ?= -static -static-libgcc -static-libstdc++
 
 # Cross-platform remove command
 ifeq ($(OS),Windows_NT)
@@ -17,7 +18,7 @@ OBJS := $(SRCS:.cc=.o)
 all: $(TARGET)
 
 $(TARGET): $(OBJS)
-	$(CXX) $(CXXFLAGS) -o $@ $^
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o $@ $^
 	-$(RM) $(OBJS)
 
 %.o: %.cc
diff --git a/src/math_exam_generator.exe b/src/math_exam_generator.exe
index 42bd692..a0268a5 100644
Binary files a/src/math_exam_generator.exe and b/src/math_exam_generator.exe differ
diff --git a/src/paper/张三1/.history.txt b/src/paper/张三1/.history.txt
index 9b7f02e..f79cc7a 100644
--- a/src/paper/张三1/.history.txt
+++ b/src/paper/张三1/.history.txt
@@ -198,3 +198,33 @@ sin(90deg) + 92 = ?
 45 - 96 + 66 = ?
 99 * 2 + 19 / 75 = ?
 53 * 84 = ?
+2 - 74 / 94 / 23 / 100 = ?
+60 + 65 + 16 + 29 = ?
+49 = ?
+68 / 39 / 2 * 26 - 9 = ?
+61 - 29 * 55 / 83 - 19 = ?
+13 - 21 + 79 = ?
+55 + 87 + 26 + 60 / 33 = ?
+80 * 46 * 14 / 3 = ?
+22 * 83 = ?
+68 * 24 = ?
+60 = ?
+45 / 24 = ?
+15 / 30 - 91 = ?
+50 = ?
+12 - 80 + 40 * 49 * 78 = ?
+83 * 36 * 72 * 43 * 55 = ?
+70 / 97 - 22 = ?
+77 + 77 - 35 + 21 = ?
+88 * 30 = ?
+19 * 8 - 29 = ?
+41 * 47 + 40 * 40 / 20 = ?
+16 - 19 - 77 - 22 = ?
+6 - 17 = ?
+70 - 60 + 43 * 3 = ?
+68 * 92 * 3 + 28 = ?
+59 + 68 + 99 * 12 * 58 = ?
+22 + 7 * 93 = ?
+100 - 49 + 21 + 50 * 45 = ?
+2 / 14 * 51 * 43 / 76 = ?
+32 - 77 + 20 = ?
diff --git a/src/paper/张三1/2025-09-29-15-04-40.txt b/src/paper/张三1/2025-09-29-15-04-40.txt
new file mode 100644
index 0000000..d7ef37c
--- /dev/null
+++ b/src/paper/张三1/2025-09-29-15-04-40.txt
@@ -0,0 +1,60 @@
+1. 2 - 74 / 94 / 23 / 100 = ?
+
+2. 60 + 65 + 16 + 29 = ?
+
+3. 49 = ?
+
+4. 68 / 39 / 2 * 26 - 9 = ?
+
+5. 61 - 29 * 55 / 83 - 19 = ?
+
+6. 13 - 21 + 79 = ?
+
+7. 55 + 87 + 26 + 60 / 33 = ?
+
+8. 80 * 46 * 14 / 3 = ?
+
+9. 22 * 83 = ?
+
+10. 68 * 24 = ?
+
+11. 60 = ?
+
+12. 45 / 24 = ?
+
+13. 15 / 30 - 91 = ?
+
+14. 50 = ?
+
+15. 12 - 80 + 40 * 49 * 78 = ?
+
+16. 83 * 36 * 72 * 43 * 55 = ?
+
+17. 70 / 97 - 22 = ?
+
+18. 77 + 77 - 35 + 21 = ?
+
+19. 88 * 30 = ?
+
+20. 19 * 8 - 29 = ?
+
+21. 41 * 47 + 40 * 40 / 20 = ?
+
+22. 16 - 19 - 77 - 22 = ?
+
+23. 6 - 17 = ?
+
+24. 70 - 60 + 43 * 3 = ?
+
+25. 68 * 92 * 3 + 28 = ?
+
+26. 59 + 68 + 99 * 12 * 58 = ?
+
+27. 22 + 7 * 93 = ?
+
+28. 100 - 49 + 21 + 50 * 45 = ?
+
+29. 2 / 14 * 51 * 43 / 76 = ?
+
+30. 32 - 77 + 20 = ?
+