TOJ 4101 Guess Game

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G :    1  2  2  3  3  3  4  4  4   4   5   5   5   5   5  6....

The portal:http://acm.tju.edu.cn/toj/showp4101.html

#include <cstdio>#include <cstdlib>#include <cmath>#include <cstring>void Deal_with(){    int T;    scanf("%d",&T);    while(T--){        long long n;        scanf("%lld",&n);        long long Left = 0,Right = 100000,Mid,ans;        while(Left < Right){            Mid = (Left + Right) / 2;            if(Mid*(Mid+1)/2 < n){                Left = Mid + 1;            }            else {                Right = Mid;            }        }        printf("%d\n",Right);    }}int main(void){    //freopen("a.in","r",stdin);    Deal_with();    return 0;}