shaobohou

#include <iostream>
#include <vector>
#include <cstdlib>
#include <algorithm>
#include <cassert>

using namespace std;


namespace Merge {

shaobohou

def water(heights):
    vol = 0
    currVol = 0
    maxWall = 0
    for h in heights:
        if h>=maxWall:
            # closed a puddle
            vol += currVol
            currVol = 0;
            maxWall = h

shaobohou

#include <time.h>
// #include <iostream>
// #include <errno.h>

int main()
{
    struct timespec tp;
    int status = clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &tp);
    // int errsv = errno;