Nauuo and Votes
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Nauuo and Votes
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https://codeforces.com/contest/1173/problem/A
題解:思維
1、當(dāng)且僅當(dāng)x>y并且x>y+z時(shí),upvote;
2、當(dāng)且僅當(dāng)x==y并且z==0時(shí),0;
3、當(dāng)且僅當(dāng)x<y并且x+z<y時(shí),downvote;
4、其余情況都是?;
5、由于z如果全部加到劣勢(shì)的一方,依然不能贏的話,優(yōu)勢(shì)一方必贏;
/* *@Author: STZG *@Language: C++ */ #include <bits/stdc++.h> #include<iostream> #include<algorithm> #include<cstdlib> #include<cstring> #include<cstdio> #include<string> #include<vector> #include<bitset> #include<queue> #include<deque> #include<stack> #include<cmath> #include<list> #include<map> #include<set> //#define DEBUG #define RI register int #define endl "\n" using namespace std; typedef long long ll; //typedef __int128 lll; const int N=100000+10; const int M=100000+10; const int MOD=1e9+7; const double PI = acos(-1.0); const double EXP = 1E-8; const int INF = 0x3f3f3f3f; int t,n,m,k,p,l,r,u,v; int ans,cnt,flag,temp,sum; int a[N]; char str; struct node{}; int main() { #ifdef DEBUGfreopen("input.in", "r", stdin);//freopen("output.out", "w", stdout); #endif//ios::sync_with_stdio(false);//cin.tie(0);//cout.tie(0);//scanf("%d",&t);//while(t--){scanf("%d%d%d",&n,&m,&k);u=(n>m)&&(n>m+k);p=(n==m)&&(k==0);v=(n<m)&&(n+k<m);cout<<(p?'0':(u||v?(u?'+':'-'):'?'))<<endl;//}#ifdef DEBUGprintf("Time cost : %lf s\n",(double)clock()/CLOCKS_PER_SEC); #endif//cout << "Hello world!" << endl;return 0; }?
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