A题 骚动时节的少女们
水题
AC代码：
1 #include<bits/stdc++.h> 2 using namespace std; 3 typedef long long ll; 4 typedef unsigned long long ull; 5 6 namespace io { 7 const int SIZE = 1e7 + 10; 8 char inbuff[SIZE]; 9 char *l, *r; 10 inline void init() { 11 l = inbuff; 12 r = inbuff + fread(inbuff, 1, SIZE, stdin); 13 } 14 inline char gc() { 15 if (l == r) init(); 16 return (l != r) ? *(l++) : EOF; 17 } 18 void read(int &x) { 19 x = 0; char ch = gc(); 20 while(!isdigit(ch)) ch = gc(); 21 while(isdigit(ch)) x = x * 10 + ch - '0', ch = gc(); 22 } 23 } using io::read; 24 25 int main(){ 26 int t; 27 cin>>t; 28 int a[6]; 29 int tmp; 30 while (t--){ 31 memset(a, 0, sizeof(a)); 32 for (int i = 0; i < 5; i++){ 33 cin>>tmp; 34 a[tmp]++; 35 } 36 int max_a = a[1], flag = 1; 37 for (int i = 2; i <= 5; i++){ 38 if (a[i] > max_a){ 39 max_a = a[i]; 40 flag = i; 41 } 42 } 43 cout<<flag<<endl; 44 } 45 return 0; 46 }
B题 奇偶性
规律题（但我那天晚上把l写成了1改了一晚上都没改出来导致没有ac掉（太过于愚蠢了
AC代码：
#include<bits/stdc++.h> using namespace std; typedef long long ll; typedef unsigned long long ull; namespace io { const int SIZE = 1e7 + 10; char inbuff[SIZE]; char *l, *r; inline void init() { l = inbuff; r = inbuff + fread(inbuff, 1, SIZE, stdin); } inline char gc() { if (l == r) init(); return (l != r) ? *(l++) : EOF; } void read(int &x) { x = 0; char ch = gc(); while(!isdigit(ch)) ch = gc(); while(isdigit(ch)) x = x * 10 + ch - '0', ch = gc(); } } using io::read; int main(){ int t; cin>>t; ll l, r, k; while (t--){ cin>>l>>r>>k; if (k & 1) cout<<r - l + 1<<endl; else cout<<r - l + 1 - (r + 1) / (k + 1) + (l + 1) / (k + 1)<<endl; } return 0; }