結果
| 問題 |
No.2937 Sigma Plus Problem
|
| コンテスト | |
| ユーザー |
るこーそー
|
| 提出日時 | 2025-02-18 01:11:18 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,639 bytes |
| コンパイル時間 | 3,306 ms |
| コンパイル使用メモリ | 278,012 KB |
| 実行使用メモリ | 6,824 KB |
| 最終ジャッジ日時 | 2025-02-18 01:11:23 |
| 合計ジャッジ時間 | 4,249 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 14 WA * 6 |
コンパイルメッセージ
main.cpp: In function ‘int128 operator+(const int128&, const int128&)’:
main.cpp:19:72: warning: narrowing conversion of ‘(((__int128)a.int128::val) + ((__int128)b.int128::val))’ from ‘__int128’ to ‘long long int’ [-Wnarrowing]
19 | int128 operator+(const int128 &a, const int128 &b){return int128{a.val + b.val};}
| ~~~~~~^~~~~~~
main.cpp: In function ‘int128 operator-(const int128&, const int128&)’:
main.cpp:20:72: warning: narrowing conversion of ‘(((__int128)a.int128::val) - ((__int128)b.int128::val))’ from ‘__int128’ to ‘long long int’ [-Wnarrowing]
20 | int128 operator-(const int128 &a, const int128 &b){return int128{a.val - b.val};}
| ~~~~~~^~~~~~~
main.cpp: In function ‘int128 operator*(const int128&, const int128&)’:
main.cpp:21:72: warning: narrowing conversion of ‘(((__int128)a.int128::val) * ((__int128)b.int128::val))’ from ‘__int128’ to ‘long long int’ [-Wnarrowing]
21 | int128 operator*(const int128 &a, const int128 &b){return int128{a.val * b.val};}
| ~~~~~~^~~~~~~
main.cpp: In function ‘int128 operator/(const int128&, const int128&)’:
main.cpp:22:72: warning: narrowing conversion of ‘(((__int128)a.int128::val) / ((__int128)b.int128::val))’ from ‘__int128’ to ‘long long int’ [-Wnarrowing]
22 | int128 operator/(const int128 &a, const int128 &b){return int128{a.val / b.val};}
| ~~~~~~^~~~~~~
ソースコード
#include <bits/stdc++.h>
using namespace std;
using ll=long long;
#define rep1(i,a) for(int i=0;i<(a);i++)
#define rep2(i,a,b) for(int i=(a);i<(b);i++)
#define rep3(i,a,b,c) for(int i=(a);((a)<=(b)?i<(b):i>(b));i+=(c))
#define rep_overload(a,b,c,d,e,...) e
#define rep(...) rep_overload(__VA_ARGS__,rep3,rep2,rep1)(__VA_ARGS__)
#define chmax(x,y) ((x)=max(x,y))
#define chmin(x,y) ((x)=min(x,y))
#define all(x) (x).begin(),(x).end()
struct int128{
__int128 val;
int128() : val(0) {}
int128(long long x) : val(x) {}
};
int128 operator+(const int128 &a, const int128 &b){return int128{a.val + b.val};}
int128 operator-(const int128 &a, const int128 &b){return int128{a.val - b.val};}
int128 operator*(const int128 &a, const int128 &b){return int128{a.val * b.val};}
int128 operator/(const int128 &a, const int128 &b){return int128{a.val / b.val};}
istream& operator>>(istream& in,int128 &x){
string s;
in >> s;
__int128 res=0;
bool is_neg=false;
for (int i=0;i<s.size();i++){
if (s[i]=='-')is_neg=true;
else res=res*10 + (s[i]-'0');
}
if (is_neg)res=-res;
x.val=res;
return in;
}
ostream& operator<<(ostream& out,const int128 &x){
__int128 n=x.val;
if (n==0){
out << "0";
return out;
}
bool is_neg=(n<0);
if (is_neg)n=-n;
string s;
while (n){
s.push_back((n%10) + '0');
n/=10;
}
if (is_neg)s.push_back('-');
reverse(s.begin(),s.end());
out << s;
return out;
}
int main(){
ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int128 n;
cin >> n;
cout << n*(n+1)/2 << endl;
}
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