제출 #209762

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
209762	2020-03-15 13:50:48	Alexa2001	Solar Storm (NOI20_solarstorm)	C++17	100 / 100	221 ms	113248 KiB

SolarStorm

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int Nmax = 1e6 + 5, lg = 20;
// 15 : 38
int go[lg+1][Nmax], n, S, deploy[Nmax];
ll coef[Nmax], d[Nmax], K;
const int bsize = 1 << 18;
char buffer[bsize+2]; int cursor;
static inline void init_read()
{
    fread(buffer, 1, bsize, stdin), cursor = 0;
}
template<typename T>
void read(T &x)
{
    x = 0;
    while(!isdigit(buffer[cursor]))
    {
        ++cursor;
        if(cursor == bsize) init_read();
 
 
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컴파일 시 표준 에러 (stderr) 메시지

SolarStorm.cpp: In function 'void init_read()':
SolarStorm.cpp:20:35: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     fread(buffer, 1, bsize, stdin), cursor = 0;
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
SolarStorm.cpp: In function 'int main()':
SolarStorm.cpp:96:17: warning: 'finish' may be used uninitialized in this function [-Wmaybe-uninitialized]
     while(start <= finish)
           ~~~~~~^~~~~~~~~
SolarStorm.cpp:99:15: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
         start = go[0][start];
         ~~~~~~^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 7 / 7
• Subtask 3: 11 / 11
• Subtask 4: 8 / 8
• Subtask 5: 18 / 18
• Subtask 6: 16 / 16
• Subtask 7: 30 / 30