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Submission #48663937
Source Code Expand
#include <bits/stdc++.h>
using namespace std;
int main() {
string s;
cin >> s;
for (int i = 0; i < (1 << 3); i++) {
//↑000から1000まで調べるよ(ただし < なので1000は入らず、1000-1の111まで)
int n = s[0] - '0';
//↑文字を整数に変換するテクニック 文字 - '0' です。
vector<char>ans(3);
//↑組み合わせ(+か-)を配列に保存しておく(出力するときに便利)
//↓各(iの)組み合わせの時にそのbitが立っているか(それが+か-か)を調べるよ
for (int j = 0; j < 3; j++) {
if (i & (1 << j)) {
//bitが立っている(+)
n += s[j + 1] - '0';
ans[j] = '+';
}
else {
//bitが立っていない(-)
n -= s[j + 1] - '0';
ans[j] = '-';
}
}
if (n == 7) {
cout << s[0] << ans[0] << s[1] << ans[1] << s[2] << ans[2] << s[3] << "=7" << endl;
return 0;
}
}
}
Submission Info
| Submission Time | |
|---|---|
| Task | C - Train Ticket |
| User | yoss |
| Language | C++ 23 (gcc 12.2) |
| Score | 300 |
| Code Size | 1089 Byte |
| Status | AC |
| Exec Time | 1 ms |
| Memory | 3592 KiB |
Judge Result
| Set Name | Sample | All | ||||
|---|---|---|---|---|---|---|
| Score / Max Score | 0 / 0 | 300 / 300 | ||||
| Status |
|
|
| Set Name | Test Cases |
|---|---|
| Sample | sample_01.txt, sample_02.txt, sample_03.txt |
| All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, sample_01.txt, sample_02.txt, sample_03.txt |
| Case Name | Status | Exec Time | Memory |
|---|---|---|---|
| 01.txt | AC | 1 ms | 3424 KiB |
| 02.txt | AC | 1 ms | 3592 KiB |
| 03.txt | AC | 1 ms | 3412 KiB |
| 04.txt | AC | 1 ms | 3428 KiB |
| 05.txt | AC | 1 ms | 3444 KiB |
| 06.txt | AC | 1 ms | 3428 KiB |
| 07.txt | AC | 1 ms | 3412 KiB |
| 08.txt | AC | 1 ms | 3420 KiB |
| 09.txt | AC | 1 ms | 3416 KiB |
| 10.txt | AC | 1 ms | 3368 KiB |
| 11.txt | AC | 1 ms | 3416 KiB |
| 12.txt | AC | 1 ms | 3516 KiB |
| 13.txt | AC | 1 ms | 3440 KiB |
| 14.txt | AC | 1 ms | 3368 KiB |
| 15.txt | AC | 1 ms | 3424 KiB |
| 16.txt | AC | 1 ms | 3412 KiB |
| sample_01.txt | AC | 1 ms | 3564 KiB |
| sample_02.txt | AC | 1 ms | 3588 KiB |
| sample_03.txt | AC | 1 ms | 3592 KiB |