关于CE的疑问
- 板块P4172 [WC2006] 水管局长
- 楼主liugh_
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- 发布时间2024/9/11 16:29
- 上次更新2024/9/13 00:16:21
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被骇客银狼阻止的越权访问保存失败
关于CE的疑问
用C++14(GCC9)交会CE，而C++17就AC，然而编译信息只有警告没有错误，就抽象。在ubuntu用原生g++9.4也能过编译，mingw同样能。怀疑过我的缺省源（就是前13行），但粘到别的题上也能通过。求解答。
/tmp/compiler_yfigqwbq/src: 在函数‘void fw(T_)’中:
/tmp/compiler_yfigqwbq/src:13:398: 警告：数组下标类型为‘char’ [-Wchar-subscripts]
13 | using namespace std;constexpr int s_=1<<20;char b_[s_],o_[s_],*p_=b_,*q_=b_,*r_=o_;template<class T_>inline bool fr(T_&x_){x_=0;char c_=0,f_=0;do{if(c_=='-')f_=1;if((c_=getchar())==-1)return 0;}while(c_<48||c_>57);do {x_=x_*10+c_-48;if((c_=getchar())==-1)break;}while(c_>47&&c_<58);if(f_)x_=-x_;return 1;}template<class T_>inline void fw(T_ x_){char d_[40],l_=-1;if(x_<0)x_=-x_,putchar('-');do d_[++l_]=x_%10+48;while(x_/=10);do putchar(d_[l_]);while(~--l_);}
| ^~~~
/tmp/compiler_yfigqwbq/src:13:441: 警告：数组下标类型为‘char’ [-Wchar-subscripts]
13 | using namespace std;constexpr int s_=1<<20;char b_[s_],o_[s_],*p_=b_,*q_=b_,*r_=o_;template<class T_>inline bool fr(T_&x_){x_=0;char c_=0,f_=0;do{if(c_=='-')f_=1;if((c_=getchar())==-1)return 0;}while(c_<48||c_>57);do {x_=x_*10+c_-48;if((c_=getchar())==-1)break;}while(c_>47&&c_<58);if(f_)x_=-x_;return 1;}template<class T_>inline void fw(T_ x_){char d_[40],l_=-1;if(x_<0)x_=-x_,putchar('-');do d_[++l_]=x_%10+48;while(x_/=10);do putchar(d_[l_]);while(~--l_);}
| ^~
/tmp/compiler_yfigqwbq/src:7:40: 附注：in definition of macro ‘putchar’
7 | #define putchar(x_) ((r_-o_<s_)?(*r_++=x_):(flush(),r_=o_,*r_++=x_))
| ^~
/tmp/compiler_yfigqwbq/src:13:441: 警告：数组下标类型为‘char’ [-Wchar-subscripts]
13 | using namespace std;constexpr int s_=1<<20;char b_[s_],o_[s_],*p_=b_,*q_=b_,*r_=o_;template<class T_>inline bool fr(T_&x_){x_=0;char c_=0,f_=0;do{if(c_=='-')f_=1;if((c_=getchar())==-1)return 0;}while(c_<48||c_>57);do {x_=x_*10+c_-48;if((c_=getchar())==-1)break;}while(c_>47&&c_<58);if(f_)x_=-x_;return 1;}template<class T_>inline void fw(T_ x_){char d_[40],l_=-1;if(x_<0)x_=-x_,putchar('-');do d_[++l_]=x_%10+48;while(x_/=10);do putchar(d_[l_]);while(~--l_);}
| ^~
/tmp/compiler_yfigqwbq/src:7:65: 附注：in definition of macro ‘putchar’
7 | #define putchar(x_) ((r_-o_<s_)?(*r_++=x_):(flush(),r_=o_,*r_++=x_))
| ^~
/tmp/compiler_yfigqwbq/src: In instantiation of ‘void fw(T_) [with T_ = int]’:
/tmp/compiler_yfigqwbq/src:138:56: required from here
/tmp/compiler_yfigqwbq/src:7:52: 警告：right operand of comma operator has no effect [-Wunused-value]
7 | #define putchar(x_) ((r_-o_<s_)?(*r_++=x_):(flush(),r_=o_,*r_++=x_))
| ^
/tmp/compiler_yfigqwbq/src:13:379: 附注：in expansion of macro ‘putchar’
13 | using namespace std;constexpr int s_=1<<20;char b_[s_],o_[s_],*p_=b_,*q_=b_,*r_=o_;template<class T_>inline bool fr(T_&x_){x_=0;char c_=0,f_=0;do{if(c_=='-')f_=1;if((c_=getchar())==-1)return 0;}while(c_<48||c_>57);do {x_=x_*10+c_-48;if((c_=getchar())==-1)break;}while(c_>47&&c_<58);if(f_)x_=-x_;return 1;}template<class T_>inline void fw(T_ x_){char d_[40],l_=-1;if(x_<0)x_=-x_,putchar('-');do d_[++l_]=x_%10+48;while(x_/=10);do putchar(d_[l_]);while(~--l_);}
| ^~~~~~~
/tmp/compiler_yfigqwbq/src:13:403: 警告：数组下标类型为‘char’ [-Wchar-subscripts]
13 | using namespace std;constexpr int s_=1<<20;char b_[s_],o_[s_],*p_=b_,*q_=b_,*r_=o_;template<class T_>inline bool fr(T_&x_){x_=0;char c_=0,f_=0;do{if(c_=='-')f_=1;if((c_=getchar())==-1)return 0;}while(c_<48||c_>57);do {x_=x_*10+c_-48;if((c_=getchar())==-1)break;}while(c_>47&&c_<58);if(f_)x_=-x_;return 1;}template<class T_>inline void fw(T_ x_){char d_[40],l_=-1;if(x_<0)x_=-x_,putchar('-');do d_[++l_]=x_%10+48;while(x_/=10);do putchar(d_[l_]);while(~--l_);}
/tmp/compiler_yfigqwbq/src:13:441: 警告：数组下标类型为‘char’ [-Wchar-subscripts]
13 | using namespace std;constexpr int s_=1<<20;char b_[s_],o_[s_],*p_=b_,*q_=b_,*r_=o_;template<class T_>inline bool fr(T_&x_){x_=0;char c_=0,f_=0;do{if(c_=='-')f_=1;if((c_=getchar())==-1)return 0;}while(c_<48||c_>57);do {x_=x_*10+c_-48;if((c_=getchar())==-1)break;}while(c_>47&&c_<58);if(f_)x_=-x_;return 1;}template<class T_>inline void fw(T_ x_){char d_[40],l_=-1;if(x_<0)x_=-x_,putchar('-');do d_[++l_]=x_%10+48;while(x_/=10);do putchar(d_[l_]);while(~--l_);}
| ^~
/tmp/compiler_yfigqwbq/src:7:40: 附注：in definition of macro ‘putchar’
7 | #define putchar(x_) ((r_-o_<s_)?(*r_++=x_):(flush(),r_=o_,*r_++=x_))
| ^~
/tmp/compiler_yfigqwbq/src:7:52: 警告：right operand of comma operator has no effect [-Wunused-value]
7 | #define putchar(x_) ((r_-o_<s_)?(*r_++=x_):(flush(),r_=o_,*r_++=x_))
| ^
/tmp/compiler_yfigqwbq/src:13:430: 附注：in expansion of macro ‘putchar’
13 | using namespace std;constexpr int s_=1<<20;char b_[s_],o_[s_],*p_=b_,*q_=b_,*r_=o_;template<class T_>inline bool fr(T_&x_){x_=0;char c_=0,f_=0;do{if(c_=='-')f_=1;if((c_=getchar())==-1)return 0;}while(c_<48||c_>57);do {x_=x_*10+c_-48;if((c_=getchar())==-1)break;}while(c_>47&&c_<58);if(f_)x_=-x_;return 1;}template<class T_>inline void fw(T_ x_){char d_[40],l_=-1;if(x_<0)x_=-x_,putchar('-');do d_[++l_]=x_%10+48;while(x_/=10);do putchar(d_[l_]);while(~--l_);}
| ^~~~~~~
/tmp/compiler_yfigqwbq/src:13:441: 警告：数组下标类型为‘char’ [-Wchar-subscripts]
13 | using namespace std;constexpr int s_=1<<20;char b_[s_],o_[s_],*p_=b_,*q_=b_,*r_=o_;template<class T_>inline bool fr(T_&x_){x_=0;char c_=0,f_=0;do{if(c_=='-')f_=1;if((c_=getchar())==-1)return 0;}while(c_<48||c_>57);do {x_=x_*10+c_-48;if((c_=getchar())==-1)break;}while(c_>47&&c_<58);if(f_)x_=-x_;return 1;}template<class T_>inline void fw(T_ x_){char d_[40],l_=-1;if(x_<0)x_=-x_,putchar('-');do d_[++l_]=x_%10+48;while(x_/=10);do putchar(d_[l_]);while(~--l_);}
| ^~
/tmp/compiler_yfigqwbq/src:7:65: 附注：in definition of macro ‘putchar’
7 | #define putchar(x_) ((r_-o_<s_)?(*r_++=x_):(flush(),r_=o_,*r_++=x_))
| ^~
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