问题标题: 酷町堂：3441

Question

0

已解决

程天棋

资深守护

RE+超时代码：

#include<bits/stdc++.h>
using namespace std;
int a[1000005],n,t;
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>t;
        a[t]++;
    } 
    for(int i=1;i<=n;i++){
        if(a[i]%2==1){
            cout<<i<<" ";
        }
    } 
    return 0;
}
10点超时1212毫秒

超时代吗传统写法

#include<bits/stdc++.h>
using namespace std;
long long t,n,ans;
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>t;
        ans=ans^t;
    } 
    cout<<ans;
    return 0;
}

1200ms

酷町豆刷题求解 C++ 0条评论 3 年，3 月前

Answer 1

已采纳

李锦昊

中级天翼

加

ios::sync_with_stdio(0);

cin.tie(0);

cout.tie(0);

Answer 2

王文博

缔造者之神

火车头加了吗？

#pragma GCC optimize(3)
#pragma GCC target("avx")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse")
#pragma GCC optimize("-fgcse-lm")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-ftree-pre")
#pragma GCC optimize("-ftree-vrp")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-falign-jumps")
#pragma GCC optimize("-falign-loops")
#pragma GCC optimize("-falign-labels")
#pragma GCC optimize("-fdevirtualize")
#pragma GCC optimize("-fcaller-saves")
#pragma GCC optimize("-fcrossjumping")
#pragma GCC optimize("-fthread-jumps")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-fwhole-program")
#pragma GCC optimize("-freorder-blocks")
#pragma GCC optimize("-fschedule-insns")
#pragma GCC optimize("inline-functions")
#pragma GCC optimize("-ftree-tail-merge")
#pragma GCC optimize("-fschedule-insns2")
#pragma GCC optimize("-fstrict-aliasing")
#pragma GCC optimize("-fstrict-overflow")
#pragma GCC optimize("-falign-functions")
#pragma GCC optimize("-fcse-skip-blocks")
#pragma GCC optimize("-fcse-follow-jumps")
#pragma GCC optimize("-fsched-interblock")
#pragma GCC optimize("-fpartial-inlining")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("-freorder-functions")
#pragma GCC optimize("-findirect-inlining")
#pragma GCC optimize("-fhoist-adjacent-loads")
#pragma GCC optimize("-frerun-cse-after-loop")
#pragma GCC optimize("inline-small-functions")
#pragma GCC optimize("-finline-small-functions")
#pragma GCC optimize("-ftree-switch-conversion")
#pragma GCC optimize("-foptimize-sibling-calls")
#pragma GCC optimize("-fexpensive-optimizations")
#pragma GCC optimize("-funsafe-loop-optimizations")
#pragma GCC optimize("inline-functions-called-once")
#pragma GCC optimize("-fdelete-null-pointer-checks")
#pragma GCC optimize(2)

黑科技加了吗？

ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

在第2个代码上面加上即可AC

望采纳！（注：直接用scanf和printf应该也可以）

问题标题: 酷町堂：3441

2 个回答: