#include <stdio.h>

int main() {
    char color[20];
    int w, h;
    int top = -1; 
    char top_color[20];

    while (scanf("%d%d%s", &w, &h, color) == 3) {
	if (top < w*h) {
	    top = w*h;
	    int i;
	    for (i = 0; color[i] != 0; ++i)
		top_color[i] = color[i];
	    top_color[i] = 0;
	}
    }
    
    if (top > 0)
	printf("%s\n", top_color);
}