Contest Duration: ~ (local time) (120 minutes)

Submission #17399361

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```#include<bits/stdc++.h>
using namespace std;
int main () {
int N, M;
vin >> N >> M;
int sal[101][101][101];
for (int i = 0; i < 101; i ++) {
for (int j = 0; j < 101; j ++) {
for (int k = 0; k < 101; k ++) {
sal[i][j][k] = -1;
}
}
}
for (int i = 0; i < N; i ++) {
int a, b, c, w;
cin >> a >> b >> c >> w;
sal[a][b][c] = w;
}
sal[0][0][0] = 0;
for (int i = 0; i < 101; i ++) {
for (int j = 0; j < 101; j ++) {
for (int k = 0; k < 101; k ++) {
if (i > 0) sal[i][j][k] = max(sal[i][j][k], sal[i - 1][j][k]);
if (j > 0) sal[i][j][k] = max(sal[i][j][k], sal[i][j - 1][k]);
if (k > 0) sal[i][j][k] = max(sal[i][j][k], sal[i][j][k - 1]);
}
}
}
for (int i = 0; i < N; i ++) {
int x, y, z;
cin >> x >> y >> z;
cout << sal[x][y][z] << endl;
}
}```

#### Submission Info

Submission Time 2020-10-15 01:51:47+0900 C - Optimal Recommendations kumjin3141 C++ (GCC 9.2.1) 0 886 Byte CE

#### Compile Error

```./Main.cpp: In function ‘int main()’:
./Main.cpp:5:3: error: ‘vin’ was not declared in this scope; did you mean ‘sin’?
5 |   vin >> N >> M;
|   ^~~
|   sin
```