Submission #4779781

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Source Code Expand

#include <climits>
#include <cmath>
#include <cstdio>
#include <cstdint>
#include <cstring>

#include <algorithm>
#include <functional>
#include <iostream>
#include <numeric>
#include <string>
#include <vector>

using namespace std;

using i32 = int32_t;
using u32 = uint32_t;
using f32 = float;
using f64 = double;
using i64 = int64_t; 
using u64 = uint64_t; 

#define SELECTER(_1, _2, _3, _4, _5, _6, _7, _8, SELECT, ...) SELECT

#define _FC1(func, type, _1)      func(type, _1);
#define _FC2(func, type, _1, ...) func(type, _1); _FC1(func, type, __VA_ARGS__);
#define _FC3(func, type, _1, ...) func(type, _1); _FC2(func, type, __VA_ARGS__);
#define _FC4(func, type, _1, ...) func(type, _1); _FC3(func, type, __VA_ARGS__);
#define _FC5(func, type, _1, ...) func(type, _1); _FC4(func, type, __VA_ARGS__);
#define _FC6(func, type, _1, ...) func(type, _1); _FC5(func, type, __VA_ARGS__);
#define _FC7(func, type, _1, ...) func(type, _1); _FC6(func, type, __VA_ARGS__);
#define _FC8(func, type, _1, ...) func(type, _1); _FC7(func, type, __VA_ARGS__);

#define _FCN(func, type, ...) SELECTER(__VA_ARGS__, _FC8, _FC7, _FC6, _FC5, _FC4, _FC3, _FC2, _FC1)(func, type, __VA_ARGS__);

constexpr const char *type2fmt(const char *fmt) {
  if(strcmp(fmt, "i32") == 0) return "%d";
  if(strcmp(fmt, "u32") == 0) return "%u";
  if(strcmp(fmt, "f32") == 0) return "%f";
  if(strcmp(fmt, "f64") == 0) return "%lf";
  if(strcmp(fmt, "i64") == 0) return "%lld";
  if(strcmp(fmt, "u64") == 0) return "%llu";
  return "";
}

#define _R(type, _1) type _1; { type _t; scanf(type2fmt(#type), &_t); _1 = _t; }
#define _P(type, _1) { const type _t = (_1); printf(type2fmt(#type), _t); putchar('\n'); }

#define RI(...)   _FCN(_R, i32, __VA_ARGS__);
#define RUI(...)  _FCN(_R, u32, __VA_ARGS__);
#define RF(...)   _FCN(_R, f32, __VA_ARGS__);
#define RD(...)   _FCN(_R, f64, __VA_ARGS__);
#define RLL(...)  _FCN(_R, i64, __VA_ARGS__);
#define RULL(...) _FCN(_R, u64, __VA_ARGS__);

#define PI(...)   _FCN(_P, i32, __VA_ARGS__);
#define PUI(...)  _FCN(_P, u32, __VA_ARGS__);
#define PF(...)   _FCN(_P, f32, __VA_ARGS__);
#define PD(...)   _FCN(_P, f64, __VA_ARGS__);
#define PLL(...)  _FCN(_P, i64, __VA_ARGS__);
#define PULL(...) _FCN(_P, u64, __VA_ARGS__);

#define REP(n) for (int _i = 0; _i < n; _i++)

const u64 mod = 1000000007;

int main() {
  vector<f64> xs, ys;

  RI(N);
  REP(N) { RI(x, y); xs.push_back(x); ys.push_back(y); }

  f64 m = 0;
  for (i32 i = 0; i < xs.size() - 1; i++) {
    for (i32 j = 0; j < xs.size(); j++) {
      m = max(m, hypot(xs[i] - xs[j], ys[i] - ys[j]));
    }
  }

  PD(m);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:46:69: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 #define _R(type, _1) type _1; { type _t; scanf(type2fmt(#type), &_t); _1 = _t; }
                                                                     ^
./Main.cpp:25:35: note: in expansion of macro ‘_R’
 #define _FC1(func, type, _1)      func(type, _1);
                                   ^
./Main.cpp:23:63: note: in expansion of macro ‘_FC1’
 #define SELECTER(_1, _2, _3, _4, _5, _6, _7, _8, SELECT, ...) SELECT
                                                               ^
./Main.cpp:49:19: note: in expansion of macro ‘_FCN’
 #define RI(...)   _FCN(_R, i32, __VA_ARGS__);
                   ^
./Main.cpp:70:3: note: in expansion of macro ‘RI’
   RI(N);
   ^
./Main.cpp:46:69: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 #define _R(type, _1) type ...

Judge Result