제출 #28125

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
28125		aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa (#71)	개미와 비트코인 (FXCUP2_ant)	C++14	0 / 1	0 ms	4268 KiB

ant

#include <bits/stdc++.h>
#include <unistd.h>

#define pii pair<int,int>
#define pll pair<lld,lld>
#define pb push_back
#define lld long long

using namespace std;

lld N,ans; lld L,T;
struct data{
	lld x;
	lld num;
}a[100002];
int memo[100002];
char s[100002][3];

lld change(lld value,char op){
	int i=0; a[i].x = value;
	if(op == 'L'){
		if(T <= a[i].x) a[i].x -= T;
		else if(T <= a[i].x+L) a[i].x = T-a[i].x;
		else a[i].x = a[i].x+L*2-T;
	}else{
		if(T <= L-a[i].x) a[i].x += T;
		else if(T <= L*2-a[i].x) a[i].x = -a[i].x + L*2 - T;
		else a[i].x = T-(L*2-a[i].x);
	}
	return a[i].x;
}

int main(){
	scanf("%lld %lld %lld",&N,&L,&T);
	T %= (L*2);
	for(int i=1; i<=N; i++){
		scanf("%lld %s",&a[i].x,&s[i]);
		a[i].num = i;
	}
	sort(a+1,a+N+1,[&](data &x,data &y){
		return x.x < y.x;
	});
	int where;
	scanf("%d",&where);
	for(int i=1; i<=N; i++){
		if(a[i].num == where){
			where = i;
			break;
		}
	}
	for(int i=1; i<=N; i++){
		memo[i] = a[i].num; a[i].num = i;
		a[i].x = change(a[i].x,s[i][0]);
	}
	sort(a+1,a+N+1,[&](data &x,data &y){
		return x.x < y.x;
	});
	for(int i=1; i<=N; i++){
		if(a[i].num == where){
			where = i;
			break;
		}
	}
	where = memo[where];
	printf("%d\n",where);

	return 0;
}	

컴파일 시 표준 에러 (stderr) 메시지

ant.cpp: In function 'int main()':
ant.cpp:37:32: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[3]' [-Wformat=]
   scanf("%lld %s",&a[i].x,&s[i]);
                                ^
ant.cpp:34:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld %lld",&N,&L,&T);
                                  ^
ant.cpp:37:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %s",&a[i].x,&s[i]);
                                 ^
ant.cpp:44:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&where);
                    ^

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