Submission #427878

#	Time	Username	Problem	Language	Result	Execution time	Memory
427878		timmyfeng	Scales (IOI15_scales)	C++17	Compilation error	0 ms	0 KiB

scales

#include <bits/stdc++.h>
using namespace std;

#include "scales.h"

int perm[6];

void rotate(int a, int b) {
    rotate(perm + a, perm + b, perm + b - 1);
}

void init(int t) {
}

void orderCoins() {
    perm[0] = getLightest(1, 2, 3);
    perm[1] = 1 + (perm[0] == 1);
    perm[2] = 4;
    perm[3] = 3 - (perm[0] == 3);
    perm[4] = 5;
    perm[5] = 6;

    int mid = getMedian(perm[0], perm[1], 4);
    if (mid == perm[0]) {
        rotate(0, 3);
    } else if (mid == 4) {
        rotate(1, 3);
    }

    int nxt = getNextLightest(perm[0], perm[1], perm[2], perm[3]);
    if (nxt == perm[1]) {
        rotate(1, 4);
    } else if (nxt == perm[2]) {
        rotate(1, 3);
    }

    mid = getMedian(perm[1], perm[2], 5);
    if (mid == perm[1]) {
        if (getLightest(perm[0], perm[1], 5) == 5) {
            rotate(0, 5);
        } else {
            rotate(1, 5);
        }
    } else if (mid == 5) {
        rotate(2, 5);
    } else if (getHeaviest(perm[3], perm[4], 5) == perm[4]) {
        rotate(3, 5);
    }

    mid = getMedian(perm[1], perm[3], 6);
    if (mid == perm[1]) {
        if (getLightest(perm[0], perm[1], 6) == 6) {
            rotate(0, 6);
        } else {
            rotate(1, 6);
        }
    } else if (mid == 6) {
        if (getLightest(perm[2], perm[3], 6) == 6) {
            rotate(2, 6);
        } else {
            rotate(3, 6);
        }
    } else if (getHeaviest(perm[4], perm[5], 6) == perm[5]) {
        rotate(4, 6);
    }

    return perm;
}

Compilation message (stderr)

scales.cpp: In function 'void init(int)':
scales.cpp:12:15: warning: unused parameter 't' [-Wunused-parameter]
   12 | void init(int t) {
      |           ~~~~^
scales.cpp: In function 'void orderCoins()':
scales.cpp:67:12: error: return-statement with a value, in function returning 'void' [-fpermissive]
   67 |     return perm;
      |            ^~~~