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  1. #include <stdio.h>
  2.  
  3. main(){
  4. 	int year,startday,n;
  5. 	scanf("%d%d%d",&year,&startday,&n);
  6. 	for(int count;count<n;count++){
  7. 		int month,day;
  8. 		scanf("%d%d",&month,&day);
  9.  
  10. 		int monthday;
  11. 		switch(month){
  12. 		case 1: case 3: case 5: case 7: case 8: case 10: case 12:
  13. 		monthday=31;
  14. 		break;
  15. 		case 4: case 6: case 9: case 11:
  16. 		monthday=30;
  17. 		break;
  18. 		case 2:
  19. 		if(year%400==0||year%4==0&&year%100!=0)
  20. 			monthday=29;
  21. 		else
  22. 			monthday=28;
  23. 			break;
  24. 		}
  25.  
  26. 		int result;
  27. 		if((1>month||month>12)){
  28. 		result=-1;
  29. 		printf("%d ",result);
  30. 		continue;
  31. 		}
  32. 		else if(day<1||day>monthday){
  33. 		result=-2;
  34. 		printf("%d ",result);
  35. 		continue;
  36. 		}
  37. 		else{
  38. 		int daypass=0;
  39. 		for(int M=1;M<month;M++){
  40. 			int monthday2;
  41. 			switch(M){
  42. 				case 1: case 3: case 5: case 7: case 8: case 10: case 12:
  43. 				monthday2=31;
  44. 				break;
  45. 				case 4: case 6: case 9: case 11:
  46. 				monthday2=30;
  47. 				break;
  48. 				case 2:
  49. 				if(year%400==0||year%4==0&&year%100!=0)
  50. 					monthday2=29;
  51. 				else
  52. 					monthday2=28;
  53. 					break;
  54. 			}
  55. 			daypass+=monthday2;	
  56. 		}
  57. 		daypass+=day;
  58. 		result=(startday+daypass-1)%7;
  59. 		printf("%d ",result);
  60. 		}
  61. 	}
  62. 	return 0;
  63. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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2000 6
10
2 29
1300 1
11 19
6 1272
8 31
4 9
9 23
2 28
1 1
10 1
stdout
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2 -1 0 -2 4 0 6 1 6 0
https://ideone.com/zPcvOC
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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