제출 #187315

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
187315	2020-01-12 16:41:58	Anai	다리 (APIO19_bridges)	C++14	30 / 100	3029 ms	22048 KiB

bridges

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#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
#define x first
#define y second
using namespace std;
struct ParseIn {
    static const int BMAX = 1 << 20;
    char buff[BMAX];
    int bp;
    FILE *fi;
    ParseIn(string str) {
        fi = fopen(str.c_str(), "r");
  bp = BMAX; }
    ParseIn() {
  fi = stdin;
        bp = BMAX; }
    char nextch() {
  if (bp == BMAX) {
            fread(buff, 1, BMAX, fi);
          bp = 0;
        }
  return buff[ bp++ ]; }
    ParseIn &operator >> (int &num) {
        char ch;
        num = 0;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

bridges.cpp: In member function 'char ParseIn::nextch()':
bridges.cpp:23:18: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
             fread(buff, 1, BMAX, fi);
             ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 13 / 13
• Subtask 2: 0 / 16
• Subtask 3: 17 / 17
• Subtask 4: 0 / 14
• Subtask 5: 0 / 13
• Subtask 6: 0 / 27