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03.checkWater.cpp
164 lines (123 loc) · 3.36 KB
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03.checkWater.cpp
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/*
Don't delete this comment!
이 주석을 지우지 마십시오.
------------------------------
이름 : 03.checkWater.cpp
설명 : 물 옮기기
*/
#include<memory.h>
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
int global_k;
int val_cmp(int *p1, int *p2, int cnt)
{
int i;
for (i = 0; i < cnt; i++)
{
if (p1[i] != p2[i]) return 0;
}
return 1;
}
void playTube(int *narray, int n, int *ngoal, int *earray[2], int e, int *way[3])
{
int i;
int k = 0;
int elen = e;
int nlen = n;
int *nminus = (int *) malloc (nlen);
way[0] = (int *) malloc (2 * n * n);
way[1] = (int *) malloc (2 * n * n);
way[2] = (int *) malloc (2 * n * n);
for(i = 0; i < nlen; i++)
{
nminus[i] = narray[i] - ngoal[i];
}
int *lowtubecnt = (int *) malloc (nlen);
int low = 0;
for(i = 0; i < nlen; i++) lowtubecnt[i] = 0;
for(i = 0; i < elen; i++)
{
lowtubecnt[earray[0][i] - 1]++;
lowtubecnt[earray[1][i] - 1]++;
}
for(i = 1; i < nlen; i++)
{
if(lowtubecnt[low] > lowtubecnt[i]) low = i;
}
while(true)
{
int goin = 0xff;
int golow = 0;
for(i = 0; i < elen; i++)
{
if(earray[0][i] - 1 == low)
{
if(goin > nminus[earray[1][i] - 1])
{
golow = earray[1][i] - 1;
goin = nminus[golow];
}
}
}
int minus;
minus = abs(nminus[low]) < abs(nminus[golow]) ? nminus[golow] : nminus[low];
way[0][k] = nminus[low] > nminus[golow] ? low : golow;
way[1][k] = nminus[low] > nminus[golow] ? golow : low;
way[2][k] = abs(minus);
narray[way[0][k]] -= way[2][k];
narray[way[1][k]] += way[2][k];
k++;
if (val_cmp(narray, ngoal, nlen)) break;
low = golow;
}
free(lowtubecnt);
free(nminus);
global_k = k;
}
int main()
{
int i, n, v, e, *narray = NULL, *ngoal = NULL, *earray[2] = { NULL, NULL };
scanf("%d %d %d", &n, &v, &e);
narray = (int *)malloc(n);
ngoal = (int *)malloc(n);
if (e > 0)
{
earray[0] = (int *)malloc(e);
earray[1] = (int *)malloc(e);
}
for (i = 0; i < n; i++)
{
scanf("%d", &narray[i]);
}
for (i = 0; i < n; i++)
{
scanf("%d", &ngoal[i]);
}
for(i = 0; i < e; i++)
{
scanf("%d %d", &earray[0][i], &earray[1][i]);
}
int *callback[3] = { NULL, NULL, NULL };
playTube(narray, n, ngoal, earray, e, callback);
printf("%d\n", global_k);
for(i = 0; i < global_k; i++){
printf("%d %d %d", callback[0][i] + 1, callback[1][i] + 1, callback[2][i]);
}
for (i = 0; i < 3; i++)
{
if (callback[i])
free(callback[i]);
}
if (narray)
free(narray);
if(ngoal)
free(ngoal);
for (i = 0; i < 2; i++)
{
if(earray[i])
free(earray[i]);
}
system("pause >nul");
return 0;
}