2023CCPC秦皇岛站

• define时间：
  

[code]#define itn int#define int long long#define ind long double#define yes cout  n >> m;    num = 0;    for (int i = 1; i > a;    }    for (int i = 1; i > b;    }    for (int i = 1; i > k;    x = 1, y = 1;    map mp;    for (int i = 1; i